'use strict';

Object.defineProperty(exports, '__esModule', { value: true });

/**
 * Check if given code is a number
 */
function isNumber$1(code) {
    return code > 47 && code < 58;
}
/**
 * Check if given character code is alpha code (letter through A to Z)
 */
function isAlpha$1(code, from, to) {
    from = from || 65; // A
    to = to || 90; // Z
    code &= ~32; // quick hack to convert any char code to uppercase char code
    return code >= from && code <= to;
}
function isAlphaNumericWord(code) {
    return isNumber$1(code) || isAlphaWord(code);
}
function isAlphaWord(code) {
    return code === 95 /* _ */ || isAlpha$1(code);
}
/**
 * Check for Umlauts i.e. ä, Ä, ö, Ö, ü and Ü
 */
function isUmlaut(code) {
    return code === 196
        || code == 214
        || code === 220
        || code === 228
        || code === 246
        || code === 252;
}
/**
 * Check if given character code is a white-space character: a space character
 * or line breaks
 */
function isWhiteSpace$3(code) {
    return code === 32 /* space */
        || code === 9 /* tab */
        || code === 160; /* non-breaking space */
}
/**
 * Check if given character code is a space character
 */
function isSpace(code) {
    return isWhiteSpace$3(code)
        || code === 10 /* LF */
        || code === 13; /* CR */
}
/**
 * Check if given character code is a quote character
 */
function isQuote$2(code) {
    return code === 39 /* ' */ || code === 34 /* " */;
}

/**
 * A streaming, character code-based string reader
 */
class Scanner {
    constructor(str, start, end) {
        if (end == null && typeof str === 'string') {
            end = str.length;
        }
        this.string = str;
        this.pos = this.start = start || 0;
        this.end = end || 0;
    }
    /**
     * Returns true only if the stream is at the end of the file.
     */
    eof() {
        return this.pos >= this.end;
    }
    /**
     * Creates a new stream instance which is limited to given `start` and `end`
     * range. E.g. its `eof()` method will look at `end` property, not actual
     * stream end
     */
    limit(start, end) {
        return new Scanner(this.string, start, end);
    }
    /**
     * Returns the next character code in the stream without advancing it.
     * Will return NaN at the end of the file.
     */
    peek() {
        return this.string.charCodeAt(this.pos);
    }
    /**
     * Returns the next character in the stream and advances it.
     * Also returns <code>undefined</code> when no more characters are available.
     */
    next() {
        if (this.pos < this.string.length) {
            return this.string.charCodeAt(this.pos++);
        }
    }
    /**
     * `match` can be a character code or a function that takes a character code
     * and returns a boolean. If the next character in the stream 'matches'
     * the given argument, it is consumed and returned.
     * Otherwise, `false` is returned.
     */
    eat(match) {
        const ch = this.peek();
        const ok = typeof match === 'function' ? match(ch) : ch === match;
        if (ok) {
            this.next();
        }
        return ok;
    }
    /**
     * Repeatedly calls <code>eat</code> with the given argument, until it
     * fails. Returns <code>true</code> if any characters were eaten.
     */
    eatWhile(match) {
        const start = this.pos;
        while (!this.eof() && this.eat(match)) { /* */ }
        return this.pos !== start;
    }
    /**
     * Backs up the stream n characters. Backing it up further than the
     * start of the current token will cause things to break, so be careful.
     */
    backUp(n) {
        this.pos -= (n || 1);
    }
    /**
     * Get the string between the start of the current token and the
     * current stream position.
     */
    current() {
        return this.substring(this.start, this.pos);
    }
    /**
     * Returns substring for given range
     */
    substring(start, end) {
        return this.string.slice(start, end);
    }
    /**
     * Creates error object with current stream state
     */
    error(message, pos = this.pos) {
        return new ScannerError(`${message} at ${pos + 1}`, pos, this.string);
    }
}
class ScannerError extends Error {
    constructor(message, pos, str) {
        super(message);
        this.pos = pos;
        this.string = str;
    }
}

function tokenScanner$1(tokens) {
    return {
        tokens,
        start: 0,
        pos: 0,
        size: tokens.length
    };
}
function peek$3(scanner) {
    return scanner.tokens[scanner.pos];
}
function next(scanner) {
    return scanner.tokens[scanner.pos++];
}
function slice(scanner, from = scanner.start, to = scanner.pos) {
    return scanner.tokens.slice(from, to);
}
function readable$1(scanner) {
    return scanner.pos < scanner.size;
}
function consume$2(scanner, test) {
    const token = peek$3(scanner);
    if (token && test(token)) {
        scanner.pos++;
        return true;
    }
    return false;
}
function error$1(scanner, message, token = peek$3(scanner)) {
    if (token && token.start != null) {
        message += ` at ${token.start}`;
    }
    const err = new Error(message);
    err['pos'] = token && token.start;
    return err;
}

function abbreviation(abbr, options = {}) {
    const scanner = tokenScanner$1(abbr);
    const result = statements(scanner, options);
    if (readable$1(scanner)) {
        throw error$1(scanner, 'Unexpected character');
    }
    return result;
}
function statements(scanner, options) {
    const result = {
        type: 'TokenGroup',
        elements: []
    };
    let ctx = result;
    let node;
    const stack = [];
    while (readable$1(scanner)) {
        if (node = element$2(scanner, options) || group(scanner, options)) {
            ctx.elements.push(node);
            if (consume$2(scanner, isChildOperator)) {
                stack.push(ctx);
                ctx = node;
            }
            else if (consume$2(scanner, isSiblingOperator$1)) {
                continue;
            }
            else if (consume$2(scanner, isClimbOperator)) {
                do {
                    if (stack.length) {
                        ctx = stack.pop();
                    }
                } while (consume$2(scanner, isClimbOperator));
            }
        }
        else {
            break;
        }
    }
    return result;
}
/**
 * Consumes group from given scanner
 */
function group(scanner, options) {
    if (consume$2(scanner, isGroupStart)) {
        const result = statements(scanner, options);
        const token = next(scanner);
        if (isBracket$2(token, 'group', false)) {
            result.repeat = repeater$1(scanner);
        }
        return result;
    }
}
/**
 * Consumes single element from given scanner
 */
function element$2(scanner, options) {
    let attr;
    const elem = {
        type: 'TokenElement',
        name: void 0,
        attributes: void 0,
        value: void 0,
        repeat: void 0,
        selfClose: false,
        elements: []
    };
    if (elementName(scanner, options)) {
        elem.name = slice(scanner);
    }
    while (readable$1(scanner)) {
        scanner.start = scanner.pos;
        if (!elem.repeat && !isEmpty(elem) && consume$2(scanner, isRepeater)) {
            elem.repeat = scanner.tokens[scanner.pos - 1];
        }
        else if (!elem.value && text(scanner)) {
            elem.value = getText(scanner);
        }
        else if (attr = shortAttribute(scanner, 'id', options) || shortAttribute(scanner, 'class', options) || attributeSet(scanner)) {
            if (!elem.attributes) {
                elem.attributes = Array.isArray(attr) ? attr.slice() : [attr];
            }
            else {
                elem.attributes = elem.attributes.concat(attr);
            }
        }
        else {
            if (!isEmpty(elem) && consume$2(scanner, isCloseOperator)) {
                elem.selfClose = true;
                if (!elem.repeat && consume$2(scanner, isRepeater)) {
                    elem.repeat = scanner.tokens[scanner.pos - 1];
                }
            }
            break;
        }
    }
    return !isEmpty(elem) ? elem : void 0;
}
/**
 * Consumes attribute set from given scanner
 */
function attributeSet(scanner) {
    if (consume$2(scanner, isAttributeSetStart)) {
        const attributes = [];
        let attr;
        while (readable$1(scanner)) {
            if (attr = attribute(scanner)) {
                attributes.push(attr);
            }
            else if (consume$2(scanner, isAttributeSetEnd)) {
                break;
            }
            else if (!consume$2(scanner, isWhiteSpace$2)) {
                throw error$1(scanner, `Unexpected "${peek$3(scanner).type}" token`);
            }
        }
        return attributes;
    }
}
/**
 * Consumes attribute shorthand (class or id) from given scanner
 */
function shortAttribute(scanner, type, options) {
    if (isOperator$1(peek$3(scanner), type)) {
        scanner.pos++;
        // Consume multiple operators
        let count = 1;
        while (isOperator$1(peek$3(scanner), type)) {
            scanner.pos++;
            count++;
        }
        const attr = {
            name: [createLiteral$1(type)]
        };
        if (count > 1) {
            attr.multiple = true;
        }
        // Consume expression after shorthand start for React-like components
        if (options.jsx && text(scanner)) {
            attr.value = getText(scanner);
            attr.expression = true;
        }
        else {
            attr.value = literal$1$1(scanner) ? slice(scanner) : void 0;
        }
        return attr;
    }
}
/**
 * Consumes single attribute from given scanner
 */
function attribute(scanner) {
    if (quoted(scanner)) {
        // Consumed quoted value: it’s a value for default attribute
        return {
            value: slice(scanner)
        };
    }
    if (literal$1$1(scanner, true)) {
        const name = slice(scanner);
        let value;
        if (consume$2(scanner, isEquals)) {
            if (quoted(scanner) || literal$1$1(scanner, true)) {
                value = slice(scanner);
            }
        }
        return { name, value };
    }
}
function repeater$1(scanner) {
    return isRepeater(peek$3(scanner))
        ? scanner.tokens[scanner.pos++]
        : void 0;
}
/**
 * Consumes quoted value from given scanner, if possible
 */
function quoted(scanner) {
    const start = scanner.pos;
    const quote = peek$3(scanner);
    if (isQuote$1(quote)) {
        scanner.pos++;
        while (readable$1(scanner)) {
            if (isQuote$1(next(scanner), quote.single)) {
                scanner.start = start;
                return true;
            }
        }
        throw error$1(scanner, 'Unclosed quote', quote);
    }
    return false;
}
/**
 * Consumes literal (unquoted value) from given scanner
 */
function literal$1$1(scanner, allowBrackets) {
    const start = scanner.pos;
    const brackets = {
        attribute: 0,
        expression: 0,
        group: 0
    };
    while (readable$1(scanner)) {
        const token = peek$3(scanner);
        if (brackets.expression) {
            // If we’re inside expression, we should consume all content in it
            if (isBracket$2(token, 'expression')) {
                brackets[token.context] += token.open ? 1 : -1;
            }
        }
        else if (isQuote$1(token) || isOperator$1(token) || isWhiteSpace$2(token) || isRepeater(token)) {
            break;
        }
        else if (isBracket$2(token)) {
            if (!allowBrackets) {
                break;
            }
            if (token.open) {
                brackets[token.context]++;
            }
            else if (!brackets[token.context]) {
                // Stop if found unmatched closing brace: it must be handled
                // by parent consumer
                break;
            }
            else {
                brackets[token.context]--;
            }
        }
        scanner.pos++;
    }
    if (start !== scanner.pos) {
        scanner.start = start;
        return true;
    }
    return false;
}
/**
 * Consumes element name from given scanner
 */
function elementName(scanner, options) {
    const start = scanner.pos;
    if (options.jsx && consume$2(scanner, isCapitalizedLiteral)) {
        // Check for edge case: consume immediate capitalized class names
        // for React-like components, e.g. `Foo.Bar.Baz`
        while (readable$1(scanner)) {
            const { pos } = scanner;
            if (!consume$2(scanner, isClassNameOperator) || !consume$2(scanner, isCapitalizedLiteral)) {
                scanner.pos = pos;
                break;
            }
        }
    }
    while (readable$1(scanner) && consume$2(scanner, isElementName$1)) {
        // empty
    }
    if (scanner.pos !== start) {
        scanner.start = start;
        return true;
    }
    return false;
}
/**
 * Consumes text value from given scanner
 */
function text(scanner) {
    const start = scanner.pos;
    if (consume$2(scanner, isTextStart)) {
        let brackets = 0;
        while (readable$1(scanner)) {
            const token = next(scanner);
            if (isBracket$2(token, 'expression')) {
                if (token.open) {
                    brackets++;
                }
                else if (!brackets) {
                    break;
                }
                else {
                    brackets--;
                }
            }
        }
        scanner.start = start;
        return true;
    }
    return false;
}
function getText(scanner) {
    let from = scanner.start;
    let to = scanner.pos;
    if (isBracket$2(scanner.tokens[from], 'expression', true)) {
        from++;
    }
    if (isBracket$2(scanner.tokens[to - 1], 'expression', false)) {
        to--;
    }
    return slice(scanner, from, to);
}
function isBracket$2(token, context, isOpen) {
    return Boolean(token && token.type === 'Bracket'
        && (!context || token.context === context)
        && (isOpen == null || token.open === isOpen));
}
function isOperator$1(token, type) {
    return Boolean(token && token.type === 'Operator' && (!type || token.operator === type));
}
function isQuote$1(token, isSingle) {
    return Boolean(token && token.type === 'Quote' && (isSingle == null || token.single === isSingle));
}
function isWhiteSpace$2(token) {
    return Boolean(token && token.type === 'WhiteSpace');
}
function isEquals(token) {
    return isOperator$1(token, 'equal');
}
function isRepeater(token) {
    return Boolean(token && token.type === 'Repeater');
}
function isLiteral$2(token) {
    return token.type === 'Literal';
}
function isCapitalizedLiteral(token) {
    if (isLiteral$2(token)) {
        const ch = token.value.charCodeAt(0);
        return ch >= 65 && ch <= 90;
    }
    return false;
}
function isElementName$1(token) {
    return token.type === 'Literal' || token.type === 'RepeaterNumber' || token.type === 'RepeaterPlaceholder';
}
function isClassNameOperator(token) {
    return isOperator$1(token, 'class');
}
function isAttributeSetStart(token) {
    return isBracket$2(token, 'attribute', true);
}
function isAttributeSetEnd(token) {
    return isBracket$2(token, 'attribute', false);
}
function isTextStart(token) {
    return isBracket$2(token, 'expression', true);
}
function isGroupStart(token) {
    return isBracket$2(token, 'group', true);
}
function createLiteral$1(value) {
    return { type: 'Literal', value };
}
function isEmpty(elem) {
    return !elem.name && !elem.value && !elem.attributes;
}
function isChildOperator(token) {
    return isOperator$1(token, 'child');
}
function isSiblingOperator$1(token) {
    return isOperator$1(token, 'sibling');
}
function isClimbOperator(token) {
    return isOperator$1(token, 'climb');
}
function isCloseOperator(token) {
    return isOperator$1(token, 'close');
}

var Chars$3;
(function (Chars) {
    /** `{` character */
    Chars[Chars["CurlyBracketOpen"] = 123] = "CurlyBracketOpen";
    /** `}` character */
    Chars[Chars["CurlyBracketClose"] = 125] = "CurlyBracketClose";
    /** `\\` character */
    Chars[Chars["Escape"] = 92] = "Escape";
    /** `=` character */
    Chars[Chars["Equals"] = 61] = "Equals";
    /** `[` character */
    Chars[Chars["SquareBracketOpen"] = 91] = "SquareBracketOpen";
    /** `]` character */
    Chars[Chars["SquareBracketClose"] = 93] = "SquareBracketClose";
    /** `*` character */
    Chars[Chars["Asterisk"] = 42] = "Asterisk";
    /** `#` character */
    Chars[Chars["Hash"] = 35] = "Hash";
    /** `$` character */
    Chars[Chars["Dollar"] = 36] = "Dollar";
    /** `-` character */
    Chars[Chars["Dash"] = 45] = "Dash";
    /** `.` character */
    Chars[Chars["Dot"] = 46] = "Dot";
    /** `/` character */
    Chars[Chars["Slash"] = 47] = "Slash";
    /** `:` character */
    Chars[Chars["Colon"] = 58] = "Colon";
    /** `!` character */
    Chars[Chars["Excl"] = 33] = "Excl";
    /** `@` character */
    Chars[Chars["At"] = 64] = "At";
    /** `_` character */
    Chars[Chars["Underscore"] = 95] = "Underscore";
    /** `(` character */
    Chars[Chars["RoundBracketOpen"] = 40] = "RoundBracketOpen";
    /** `)` character */
    Chars[Chars["RoundBracketClose"] = 41] = "RoundBracketClose";
    /** `+` character */
    Chars[Chars["Sibling"] = 43] = "Sibling";
    /** `>` character */
    Chars[Chars["Child"] = 62] = "Child";
    /** `^` character */
    Chars[Chars["Climb"] = 94] = "Climb";
    /** `'` character */
    Chars[Chars["SingleQuote"] = 39] = "SingleQuote";
    /** `""` character */
    Chars[Chars["DoubleQuote"] = 34] = "DoubleQuote";
})(Chars$3 || (Chars$3 = {}));
/**
 * If consumes escape character, sets current stream range to escaped value
 */
function escaped(scanner) {
    if (scanner.eat(Chars$3.Escape)) {
        scanner.start = scanner.pos;
        if (!scanner.eof()) {
            scanner.pos++;
        }
        return true;
    }
    return false;
}

function tokenize$1(source) {
    const scanner = new Scanner(source);
    const result = [];
    const ctx = {
        group: 0,
        attribute: 0,
        expression: 0,
        quote: 0
    };
    let ch = 0;
    let token;
    while (!scanner.eof()) {
        ch = scanner.peek();
        token = getToken$1(scanner, ctx);
        if (token) {
            result.push(token);
            if (token.type === 'Quote') {
                ctx.quote = ch === ctx.quote ? 0 : ch;
            }
            else if (token.type === 'Bracket') {
                ctx[token.context] += token.open ? 1 : -1;
            }
        }
        else {
            throw scanner.error('Unexpected character');
        }
    }
    return result;
}
/**
 * Returns next token from given scanner, if possible
 */
function getToken$1(scanner, ctx) {
    return field$2(scanner, ctx)
        || repeaterPlaceholder(scanner)
        || repeaterNumber(scanner)
        || repeater(scanner)
        || whiteSpace$1(scanner)
        || literal$2(scanner, ctx)
        || operator$1(scanner)
        || quote(scanner)
        || bracket$1(scanner);
}
/**
 * Consumes literal from given scanner
 */
function literal$2(scanner, ctx) {
    const start = scanner.pos;
    const expressionStart = ctx.expression;
    let value = '';
    while (!scanner.eof()) {
        // Consume escaped sequence no matter of context
        if (escaped(scanner)) {
            value += scanner.current();
            continue;
        }
        const ch = scanner.peek();
        if (ch === Chars$3.Slash && !ctx.quote && !ctx.expression && !ctx.attribute) {
            // Special case for `/` character between numbers in class names
            const prev = scanner.string.charCodeAt(scanner.pos - 1);
            const next = scanner.string.charCodeAt(scanner.pos + 1);
            if (isNumber$1(prev) && isNumber$1(next)) {
                value += scanner.string[scanner.pos++];
                continue;
            }
        }
        if (ch === ctx.quote || ch === Chars$3.Dollar || isAllowedOperator(ch, ctx)) {
            // 1. Found matching quote
            // 2. The `$` character has special meaning in every context
            // 3. Depending on context, some characters should be treated as operators
            break;
        }
        if (expressionStart) {
            // Consume nested expressions, e.g. span{{foo}}
            if (ch === Chars$3.CurlyBracketOpen) {
                ctx.expression++;
            }
            else if (ch === Chars$3.CurlyBracketClose) {
                if (ctx.expression > expressionStart) {
                    ctx.expression--;
                }
                else {
                    break;
                }
            }
        }
        else if (!ctx.quote) {
            // Consuming element name
            if (!ctx.attribute && !isElementName(ch)) {
                break;
            }
            if (isAllowedSpace(ch, ctx) || isAllowedRepeater(ch, ctx) || isQuote$2(ch) || bracketType(ch)) {
                // Stop for characters not allowed in unquoted literal
                break;
            }
        }
        value += scanner.string[scanner.pos++];
    }
    if (start !== scanner.pos) {
        scanner.start = start;
        return {
            type: 'Literal',
            value,
            start,
            end: scanner.pos
        };
    }
}
/**
 * Consumes white space characters as string literal from given scanner
 */
function whiteSpace$1(scanner) {
    const start = scanner.pos;
    if (scanner.eatWhile(isSpace)) {
        return {
            type: 'WhiteSpace',
            start,
            end: scanner.pos,
            value: scanner.substring(start, scanner.pos)
        };
    }
}
/**
 * Consumes quote from given scanner
 */
function quote(scanner) {
    const ch = scanner.peek();
    if (isQuote$2(ch)) {
        return {
            type: 'Quote',
            single: ch === Chars$3.SingleQuote,
            start: scanner.pos++,
            end: scanner.pos
        };
    }
}
/**
 * Consumes bracket from given scanner
 */
function bracket$1(scanner) {
    const ch = scanner.peek();
    const context = bracketType(ch);
    if (context) {
        return {
            type: 'Bracket',
            open: isOpenBracket$2(ch),
            context,
            start: scanner.pos++,
            end: scanner.pos
        };
    }
}
/**
 * Consumes operator from given scanner
 */
function operator$1(scanner) {
    const op = operatorType$1(scanner.peek());
    if (op) {
        return {
            type: 'Operator',
            operator: op,
            start: scanner.pos++,
            end: scanner.pos
        };
    }
}
/**
 * Consumes node repeat token from current stream position and returns its
 * parsed value
 */
function repeater(scanner) {
    const start = scanner.pos;
    if (scanner.eat(Chars$3.Asterisk)) {
        scanner.start = scanner.pos;
        let count = 1;
        let implicit = false;
        if (scanner.eatWhile(isNumber$1)) {
            count = Number(scanner.current());
        }
        else {
            implicit = true;
        }
        return {
            type: 'Repeater',
            count,
            value: 0,
            implicit,
            start,
            end: scanner.pos
        };
    }
}
/**
 * Consumes repeater placeholder `$#` from given scanner
 */
function repeaterPlaceholder(scanner) {
    const start = scanner.pos;
    if (scanner.eat(Chars$3.Dollar) && scanner.eat(Chars$3.Hash)) {
        return {
            type: 'RepeaterPlaceholder',
            value: void 0,
            start,
            end: scanner.pos
        };
    }
    scanner.pos = start;
}
/**
 * Consumes numbering token like `$` from given scanner state
 */
function repeaterNumber(scanner) {
    const start = scanner.pos;
    if (scanner.eatWhile(Chars$3.Dollar)) {
        const size = scanner.pos - start;
        let reverse = false;
        let base = 1;
        let parent = 0;
        if (scanner.eat(Chars$3.At)) {
            // Consume numbering modifiers
            while (scanner.eat(Chars$3.Climb)) {
                parent++;
            }
            reverse = scanner.eat(Chars$3.Dash);
            scanner.start = scanner.pos;
            if (scanner.eatWhile(isNumber$1)) {
                base = Number(scanner.current());
            }
        }
        scanner.start = start;
        return {
            type: 'RepeaterNumber',
            size,
            reverse,
            base,
            parent,
            start,
            end: scanner.pos
        };
    }
}
function field$2(scanner, ctx) {
    const start = scanner.pos;
    // Fields are allowed inside expressions and attributes
    if ((ctx.expression || ctx.attribute) && scanner.eat(Chars$3.Dollar) && scanner.eat(Chars$3.CurlyBracketOpen)) {
        scanner.start = scanner.pos;
        let index;
        let name = '';
        if (scanner.eatWhile(isNumber$1)) {
            // It’s a field
            index = Number(scanner.current());
            name = scanner.eat(Chars$3.Colon) ? consumePlaceholder$2(scanner) : '';
        }
        else if (isAlpha$1(scanner.peek())) {
            // It’s a variable
            name = consumePlaceholder$2(scanner);
        }
        if (scanner.eat(Chars$3.CurlyBracketClose)) {
            return {
                type: 'Field',
                index, name,
                start,
                end: scanner.pos
            };
        }
        throw scanner.error('Expecting }');
    }
    // If we reached here then there’s no valid field here, revert
    // back to starting position
    scanner.pos = start;
}
/**
 * Consumes a placeholder: value right after `:` in field. Could be empty
 */
function consumePlaceholder$2(stream) {
    const stack = [];
    stream.start = stream.pos;
    while (!stream.eof()) {
        if (stream.eat(Chars$3.CurlyBracketOpen)) {
            stack.push(stream.pos);
        }
        else if (stream.eat(Chars$3.CurlyBracketClose)) {
            if (!stack.length) {
                stream.pos--;
                break;
            }
            stack.pop();
        }
        else {
            stream.pos++;
        }
    }
    if (stack.length) {
        stream.pos = stack.pop();
        throw stream.error(`Expecting }`);
    }
    return stream.current();
}
/**
 * Check if given character code is an operator and it’s allowed in current context
 */
function isAllowedOperator(ch, ctx) {
    const op = operatorType$1(ch);
    if (!op || ctx.quote || ctx.expression) {
        // No operators inside quoted values or expressions
        return false;
    }
    // Inside attributes, only `equals` is allowed
    return !ctx.attribute || op === 'equal';
}
/**
 * Check if given character is a space character and is allowed to be consumed
 * as a space token in current context
 */
function isAllowedSpace(ch, ctx) {
    return isSpace(ch) && !ctx.expression;
}
/**
 * Check if given character can be consumed as repeater in current context
 */
function isAllowedRepeater(ch, ctx) {
    return ch === Chars$3.Asterisk && !ctx.attribute && !ctx.expression;
}
/**
 * If given character is a bracket, returns it’s type
 */
function bracketType(ch) {
    if (ch === Chars$3.RoundBracketOpen || ch === Chars$3.RoundBracketClose) {
        return 'group';
    }
    if (ch === Chars$3.SquareBracketOpen || ch === Chars$3.SquareBracketClose) {
        return 'attribute';
    }
    if (ch === Chars$3.CurlyBracketOpen || ch === Chars$3.CurlyBracketClose) {
        return 'expression';
    }
}
/**
 * If given character is an operator, returns it’s type
 */
function operatorType$1(ch) {
    return (ch === Chars$3.Child && 'child')
        || (ch === Chars$3.Sibling && 'sibling')
        || (ch === Chars$3.Climb && 'climb')
        || (ch === Chars$3.Dot && 'class')
        || (ch === Chars$3.Hash && 'id')
        || (ch === Chars$3.Slash && 'close')
        || (ch === Chars$3.Equals && 'equal')
        || void 0;
}
/**
 * Check if given character is an open bracket
 */
function isOpenBracket$2(ch) {
    return ch === Chars$3.CurlyBracketOpen
        || ch === Chars$3.SquareBracketOpen
        || ch === Chars$3.RoundBracketOpen;
}
/**
 * Check if given character is allowed in element name
 */
function isElementName(ch) {
    return isAlphaNumericWord(ch)
        || isUmlaut(ch)
        || ch === Chars$3.Dash
        || ch === Chars$3.Colon
        || ch === Chars$3.Excl;
}

const operators = {
    child: '>',
    class: '.',
    climb: '^',
    id: '#',
    equal: '=',
    close: '/',
    sibling: '+'
};
const tokenVisitor = {
    Literal(token) {
        return token.value;
    },
    Quote(token) {
        return token.single ? '\'' : '"';
    },
    Bracket(token) {
        if (token.context === 'attribute') {
            return token.open ? '[' : ']';
        }
        else if (token.context === 'expression') {
            return token.open ? '{' : '}';
        }
        else {
            return token.open ? '(' : '}';
        }
    },
    Operator(token) {
        return operators[token.operator];
    },
    Field(token, state) {
        if (token.index != null) {
            // It’s a field: by default, return TextMate-compatible field
            return token.name
                ? `\${${token.index}:${token.name}}`
                : `\${${token.index}`;
        }
        else if (token.name) {
            // It’s a variable
            return state.getVariable(token.name);
        }
        return '';
    },
    RepeaterPlaceholder(token, state) {
        // Find closest implicit repeater
        let repeater;
        for (let i = state.repeaters.length - 1; i >= 0; i--) {
            if (state.repeaters[i].implicit) {
                repeater = state.repeaters[i];
                break;
            }
        }
        state.inserted = true;
        return state.getText(repeater && repeater.value);
    },
    RepeaterNumber(token, state) {
        let value = 1;
        const lastIx = state.repeaters.length - 1;
        // const repeaterIx = Math.max(0, state.repeaters.length - 1 - token.parent);
        const repeater = state.repeaters[lastIx];
        if (repeater) {
            value = token.reverse
                ? token.base + repeater.count - repeater.value - 1
                : token.base + repeater.value;
            if (token.parent) {
                const parentIx = Math.max(0, lastIx - token.parent);
                if (parentIx !== lastIx) {
                    const parentRepeater = state.repeaters[parentIx];
                    value += repeater.count * parentRepeater.value;
                }
            }
        }
        let result = String(value);
        while (result.length < token.size) {
            result = '0' + result;
        }
        return result;
    },
    WhiteSpace(token) {
        return token.value;
    }
};
/**
 * Converts given value token to string
 */
function stringify$1(token, state) {
    if (!tokenVisitor[token.type]) {
        throw new Error(`Unknown token ${token.type}`);
    }
    return tokenVisitor[token.type](token, state);
}

const urlRegex = /^((https?:|ftp:|file:)?\/\/|(www|ftp)\.)[^ ]*$/;
const emailRegex = /^[a-z0-9._%+-]+@[a-z0-9.-]+\.[a-z]{2,5}$/;
/**
 * Converts given token-based abbreviation into simplified and unrolled node-based
 * abbreviation
 */
function convert(abbr, options = {}) {
    let textInserted = false;
    let cleanText;
    if (options.text) {
        if (Array.isArray(options.text)) {
            cleanText = options.text.filter(s => s.trim());
        }
        else {
            cleanText = options.text;
        }
    }
    const result = {
        type: 'Abbreviation',
        children: convertGroup(abbr, {
            inserted: false,
            repeaters: [],
            text: options.text,
            cleanText,
            repeatGuard: options.maxRepeat || Number.POSITIVE_INFINITY,
            getText(pos) {
                var _a;
                textInserted = true;
                let value;
                if (Array.isArray(options.text)) {
                    if (pos !== undefined && pos >= 0 && pos < cleanText.length) {
                        return cleanText[pos];
                    }
                    value = pos !== undefined ? options.text[pos] : options.text.join('\n');
                }
                else {
                    value = (_a = options.text) !== null && _a !== void 0 ? _a : '';
                }
                return value;
            },
            getVariable(name) {
                const varValue = options.variables && options.variables[name];
                return varValue != null ? varValue : name;
            }
        })
    };
    if (options.text != null && !textInserted) {
        // Text given but no implicitly repeated elements: insert it into
        // deepest child
        const deepest = deepestNode(last$1(result.children));
        if (deepest) {
            const text = Array.isArray(options.text) ? options.text.join('\n') : options.text;
            insertText(deepest, text);
            if (deepest.name === 'a' && options.href) {
                // Automatically update value of `<a>` element if inserting URL or email
                insertHref(deepest, text);
            }
        }
    }
    return result;
}
/**
 * Converts given statement to abbreviation nodes
 */
function convertStatement(node, state) {
    let result = [];
    if (node.repeat) {
        // Node is repeated: we should create copies of given node
        // and supply context token with actual repeater state
        const original = node.repeat;
        const repeat = Object.assign({}, original);
        repeat.count = repeat.implicit && Array.isArray(state.text)
            ? state.cleanText.length
            : (repeat.count || 1);
        let items;
        state.repeaters.push(repeat);
        for (let i = 0; i < repeat.count; i++) {
            repeat.value = i;
            node.repeat = repeat;
            items = isGroup(node)
                ? convertGroup(node, state)
                : convertElement(node, state);
            if (repeat.implicit && !state.inserted) {
                // It’s an implicit repeater but no repeater placeholders found inside,
                // we should insert text into deepest node
                const target = last$1(items);
                const deepest = target && deepestNode(target);
                if (deepest) {
                    insertText(deepest, state.getText(repeat.value));
                }
            }
            result = result.concat(items);
            // We should output at least one repeated item even if it’s reached
            // repeat limit
            if (--state.repeatGuard <= 0) {
                break;
            }
        }
        state.repeaters.pop();
        node.repeat = original;
        if (repeat.implicit) {
            state.inserted = true;
        }
    }
    else {
        result = result.concat(isGroup(node) ? convertGroup(node, state) : convertElement(node, state));
    }
    return result;
}
function convertElement(node, state) {
    let children = [];
    const elem = {
        type: 'AbbreviationNode',
        name: node.name && stringifyName(node.name, state),
        value: node.value && stringifyValue$1(node.value, state),
        attributes: void 0,
        children,
        repeat: node.repeat && Object.assign({}, node.repeat),
        selfClosing: node.selfClose,
    };
    let result = [elem];
    for (const child of node.elements) {
        children = children.concat(convertStatement(child, state));
    }
    if (node.attributes) {
        elem.attributes = [];
        for (const attr of node.attributes) {
            elem.attributes.push(convertAttribute(attr, state));
        }
    }
    // In case if current node is a text-only snippet without fields, we should
    // put all children as siblings
    if (!elem.name && !elem.attributes && elem.value && !elem.value.some(isField$1)) {
        // XXX it’s unclear that `children` is not bound to `elem`
        // due to concat operation
        result = result.concat(children);
    }
    else {
        elem.children = children;
    }
    return result;
}
function convertGroup(node, state) {
    let result = [];
    for (const child of node.elements) {
        result = result.concat(convertStatement(child, state));
    }
    if (node.repeat) {
        result = attachRepeater(result, node.repeat);
    }
    return result;
}
function convertAttribute(node, state) {
    let implied = false;
    let isBoolean = false;
    let valueType = node.expression ? 'expression' : 'raw';
    let value;
    const name = node.name && stringifyName(node.name, state);
    if (name && name[0] === '!') {
        implied = true;
    }
    if (name && name[name.length - 1] === '.') {
        isBoolean = true;
    }
    if (node.value) {
        const tokens = node.value.slice();
        if (isQuote$1(tokens[0])) {
            // It’s a quoted value: remove quotes from output but mark attribute
            // value as quoted
            const quote = tokens.shift();
            if (tokens.length && last$1(tokens).type === quote.type) {
                tokens.pop();
            }
            valueType = quote.single ? 'singleQuote' : 'doubleQuote';
        }
        else if (isBracket$2(tokens[0], 'expression', true)) {
            // Value is expression: remove brackets but mark value type
            valueType = 'expression';
            tokens.shift();
            if (isBracket$2(last$1(tokens), 'expression', false)) {
                tokens.pop();
            }
        }
        value = stringifyValue$1(tokens, state);
    }
    return {
        name: isBoolean || implied
            ? name.slice(implied ? 1 : 0, isBoolean ? -1 : void 0)
            : name,
        value,
        boolean: isBoolean,
        implied,
        valueType,
        multiple: node.multiple
    };
}
/**
 * Converts given token list to string
 */
function stringifyName(tokens, state) {
    let str = '';
    for (let i = 0; i < tokens.length; i++) {
        str += stringify$1(tokens[i], state);
    }
    return str;
}
/**
 * Converts given token list to value list
 */
function stringifyValue$1(tokens, state) {
    const result = [];
    let str = '';
    for (let i = 0, token; i < tokens.length; i++) {
        token = tokens[i];
        if (isField$1(token)) {
            // We should keep original fields in output since some editors has their
            // own syntax for field or doesn’t support fields at all so we should
            // capture actual field location in output stream
            if (str) {
                result.push(str);
                str = '';
            }
            result.push(token);
        }
        else {
            str += stringify$1(token, state);
        }
    }
    if (str) {
        result.push(str);
    }
    return result;
}
function isGroup(node) {
    return node.type === 'TokenGroup';
}
function isField$1(token) {
    return typeof token === 'object' && token.type === 'Field' && token.index != null;
}
function last$1(arr) {
    return arr[arr.length - 1];
}
function deepestNode(node) {
    return node.children.length ? deepestNode(last$1(node.children)) : node;
}
function insertText(node, text) {
    if (node.value) {
        const lastToken = last$1(node.value);
        if (typeof lastToken === 'string') {
            node.value[node.value.length - 1] += text;
        }
        else {
            node.value.push(text);
        }
    }
    else {
        node.value = [text];
    }
}
function insertHref(node, text) {
    var _a;
    let href = '';
    if (urlRegex.test(text)) {
        href = text;
        if (!/\w+:/.test(href) && !href.startsWith('//')) {
            href = `http://${href}`;
        }
    }
    else if (emailRegex.test(text)) {
        href = `mailto:${text}`;
    }
    const hrefAttribute = (_a = node.attributes) === null || _a === void 0 ? void 0 : _a.find(attr => attr.name === 'href');
    if (!hrefAttribute) {
        if (!node.attributes) {
            node.attributes = [];
        }
        node.attributes.push({ name: 'href', value: [href], valueType: 'doubleQuote' });
    }
    else if (!hrefAttribute.value) {
        hrefAttribute.value = [href];
    }
}
function attachRepeater(items, repeater) {
    for (const item of items) {
        if (!item.repeat) {
            item.repeat = Object.assign({}, repeater);
        }
    }
    return items;
}

/**
 * Parses given abbreviation into node tree
 */
function parseAbbreviation(abbr, options) {
    try {
        const tokens = typeof abbr === 'string' ? tokenize$1(abbr) : abbr;
        return convert(abbreviation(tokens, options), options);
    }
    catch (err) {
        if (err instanceof ScannerError && typeof abbr === 'string') {
            err.message += `\n${abbr}\n${'-'.repeat(err.pos)}^`;
        }
        throw err;
    }
}

var OperatorType;
(function (OperatorType) {
    OperatorType["Sibling"] = "+";
    OperatorType["Important"] = "!";
    OperatorType["ArgumentDelimiter"] = ",";
    OperatorType["ValueDelimiter"] = "-";
    OperatorType["PropertyDelimiter"] = ":";
})(OperatorType || (OperatorType = {}));

var Chars$2;
(function (Chars) {
    /** `#` character */
    Chars[Chars["Hash"] = 35] = "Hash";
    /** `$` character */
    Chars[Chars["Dollar"] = 36] = "Dollar";
    /** `-` character */
    Chars[Chars["Dash"] = 45] = "Dash";
    /** `.` character */
    Chars[Chars["Dot"] = 46] = "Dot";
    /** `:` character */
    Chars[Chars["Colon"] = 58] = "Colon";
    /** `,` character */
    Chars[Chars["Comma"] = 44] = "Comma";
    /** `!` character */
    Chars[Chars["Excl"] = 33] = "Excl";
    /** `@` character */
    Chars[Chars["At"] = 64] = "At";
    /** `%` character */
    Chars[Chars["Percent"] = 37] = "Percent";
    /** `_` character */
    Chars[Chars["Underscore"] = 95] = "Underscore";
    /** `(` character */
    Chars[Chars["RoundBracketOpen"] = 40] = "RoundBracketOpen";
    /** `)` character */
    Chars[Chars["RoundBracketClose"] = 41] = "RoundBracketClose";
    /** `{` character */
    Chars[Chars["CurlyBracketOpen"] = 123] = "CurlyBracketOpen";
    /** `}` character */
    Chars[Chars["CurlyBracketClose"] = 125] = "CurlyBracketClose";
    /** `+` character */
    Chars[Chars["Sibling"] = 43] = "Sibling";
    /** `'` character */
    Chars[Chars["SingleQuote"] = 39] = "SingleQuote";
    /** `"` character */
    Chars[Chars["DoubleQuote"] = 34] = "DoubleQuote";
    /** `t` character */
    Chars[Chars["Transparent"] = 116] = "Transparent";
    /** `/` character */
    Chars[Chars["Slash"] = 47] = "Slash";
})(Chars$2 || (Chars$2 = {}));

function tokenize(abbr, isValue) {
    let brackets = 0;
    let token;
    const scanner = new Scanner(abbr);
    const tokens = [];
    while (!scanner.eof()) {
        token = getToken(scanner, brackets === 0 && !isValue);
        if (!token) {
            throw scanner.error('Unexpected character');
        }
        if (token.type === 'Bracket') {
            if (!brackets && token.open) {
                mergeTokens(scanner, tokens);
            }
            brackets += token.open ? 1 : -1;
            if (brackets < 0) {
                throw scanner.error('Unexpected bracket', token.start);
            }
        }
        tokens.push(token);
        // Forcibly consume next operator after unit-less numeric value or color:
        // next dash `-` must be used as value delimiter
        if (shouldConsumeDashAfter(token) && (token = operator(scanner))) {
            tokens.push(token);
        }
    }
    return tokens;
}
/**
 * Returns next token from given scanner, if possible
 */
function getToken(scanner, short) {
    return field$1(scanner)
        || customProperty(scanner)
        || numberValue(scanner)
        || colorValue(scanner)
        || stringValue(scanner)
        || bracket(scanner)
        || operator(scanner)
        || whiteSpace(scanner)
        || literal$1(scanner, short);
}
function field$1(scanner) {
    const start = scanner.pos;
    if (scanner.eat(Chars$2.Dollar) && scanner.eat(Chars$2.CurlyBracketOpen)) {
        scanner.start = scanner.pos;
        let index;
        let name = '';
        if (scanner.eatWhile(isNumber$1)) {
            // It’s a field
            index = Number(scanner.current());
            name = scanner.eat(Chars$2.Colon) ? consumePlaceholder$1(scanner) : '';
        }
        else if (isAlpha$1(scanner.peek())) {
            // It’s a variable
            name = consumePlaceholder$1(scanner);
        }
        if (scanner.eat(Chars$2.CurlyBracketClose)) {
            return {
                type: 'Field',
                index, name,
                start,
                end: scanner.pos
            };
        }
        throw scanner.error('Expecting }');
    }
    // If we reached here then there’s no valid field here, revert
    // back to starting position
    scanner.pos = start;
}
/**
 * Consumes a placeholder: value right after `:` in field. Could be empty
 */
function consumePlaceholder$1(stream) {
    const stack = [];
    stream.start = stream.pos;
    while (!stream.eof()) {
        if (stream.eat(Chars$2.CurlyBracketOpen)) {
            stack.push(stream.pos);
        }
        else if (stream.eat(Chars$2.CurlyBracketClose)) {
            if (!stack.length) {
                stream.pos--;
                break;
            }
            stack.pop();
        }
        else {
            stream.pos++;
        }
    }
    if (stack.length) {
        stream.pos = stack.pop();
        throw stream.error(`Expecting }`);
    }
    return stream.current();
}
/**
 * Consumes literal from given scanner
 * @param short Use short notation for consuming value.
 * The difference between “short” and “full” notation is that first one uses
 * alpha characters only and used for extracting keywords from abbreviation,
 * while “full” notation also supports numbers and dashes
 */
function literal$1(scanner, short) {
    const start = scanner.pos;
    if (scanner.eat(isIdentPrefix)) {
        // SCSS or LESS variable
        // NB a bit dirty hack: if abbreviation starts with identifier prefix,
        // consume alpha characters only to allow embedded variables
        scanner.eatWhile(start ? isKeyword : isLiteral$1);
    }
    else if (scanner.eat(isAlphaWord)) {
        scanner.eatWhile(short ? isLiteral$1 : isKeyword);
    }
    else {
        // Allow dots only at the beginning of literal
        scanner.eat(Chars$2.Dot);
        scanner.eatWhile(isLiteral$1);
    }
    if (start !== scanner.pos) {
        scanner.start = start;
        return createLiteral(scanner, scanner.start = start);
    }
}
function createLiteral(scanner, start = scanner.start, end = scanner.pos) {
    return {
        type: 'Literal',
        value: scanner.substring(start, end),
        start,
        end
    };
}
/**
 * Consumes numeric CSS value (number with optional unit) from current stream,
 * if possible
 */
function numberValue(scanner) {
    const start = scanner.pos;
    if (consumeNumber(scanner)) {
        scanner.start = start;
        const rawValue = scanner.current();
        // eat unit, which can be a % or alpha word
        scanner.start = scanner.pos;
        scanner.eat(Chars$2.Percent) || scanner.eatWhile(isAlphaWord);
        return {
            type: 'NumberValue',
            value: Number(rawValue),
            rawValue,
            unit: scanner.current(),
            start,
            end: scanner.pos
        };
    }
}
/**
 * Consumes quoted string value from given scanner
 */
function stringValue(scanner) {
    const ch = scanner.peek();
    const start = scanner.pos;
    let finished = false;
    if (isQuote$2(ch)) {
        scanner.pos++;
        while (!scanner.eof()) {
            // Do not throw error on malformed string
            if (scanner.eat(ch)) {
                finished = true;
                break;
            }
            else {
                scanner.pos++;
            }
        }
        scanner.start = start;
        return {
            type: 'StringValue',
            value: scanner.substring(start + 1, scanner.pos - (finished ? 1 : 0)),
            quote: ch === Chars$2.SingleQuote ? 'single' : 'double',
            start,
            end: scanner.pos
        };
    }
}
/**
 * Consumes a color token from given string
 */
function colorValue(scanner) {
    // supported color variations:
    // #abc   → #aabbccc
    // #0     → #000000
    // #fff.5 → rgba(255, 255, 255, 0.5)
    // #t     → transparent
    const start = scanner.pos;
    if (scanner.eat(Chars$2.Hash)) {
        const valueStart = scanner.pos;
        let color = '';
        let alpha = '';
        if (scanner.eatWhile(isHex)) {
            color = scanner.substring(valueStart, scanner.pos);
            alpha = colorAlpha(scanner);
        }
        else if (scanner.eat(Chars$2.Transparent)) {
            color = '0';
            alpha = colorAlpha(scanner) || '0';
        }
        else {
            alpha = colorAlpha(scanner);
        }
        if (color || alpha || scanner.eof()) {
            const { r, g, b, a } = parseColor(color, alpha);
            return {
                type: 'ColorValue',
                r, g, b, a,
                raw: scanner.substring(start + 1, scanner.pos),
                start,
                end: scanner.pos
            };
        }
        else {
            // Consumed # but no actual value: invalid color value, treat it as literal
            return createLiteral(scanner, start);
        }
    }
    scanner.pos = start;
}
/**
 * Consumes alpha value of color: `.1`
 */
function colorAlpha(scanner) {
    const start = scanner.pos;
    if (scanner.eat(Chars$2.Dot)) {
        scanner.start = start;
        if (scanner.eatWhile(isNumber$1)) {
            return scanner.current();
        }
        return '1';
    }
    return '';
}
/**
 * Consumes white space characters as string literal from given scanner
 */
function whiteSpace(scanner) {
    const start = scanner.pos;
    if (scanner.eatWhile(isSpace)) {
        return {
            type: 'WhiteSpace',
            start,
            end: scanner.pos
        };
    }
}
/**
 * Consumes custom CSS property: --foo-bar
 */
function customProperty(scanner) {
    const start = scanner.pos;
    if (scanner.eat(Chars$2.Dash) && scanner.eat(Chars$2.Dash)) {
        scanner.start = start;
        scanner.eatWhile(isKeyword);
        return {
            type: 'CustomProperty',
            value: scanner.current(),
            start,
            end: scanner.pos
        };
    }
    scanner.pos = start;
}
/**
 * Consumes bracket from given scanner
 */
function bracket(scanner) {
    const ch = scanner.peek();
    if (isBracket$1(ch)) {
        return {
            type: 'Bracket',
            open: ch === Chars$2.RoundBracketOpen,
            start: scanner.pos++,
            end: scanner.pos
        };
    }
}
/**
 * Consumes operator from given scanner
 */
function operator(scanner) {
    const op = operatorType(scanner.peek());
    if (op) {
        return {
            type: 'Operator',
            operator: op,
            start: scanner.pos++,
            end: scanner.pos
        };
    }
}
/**
 * Eats number value from given stream
 * @return Returns `true` if number was consumed
 */
function consumeNumber(stream) {
    const start = stream.pos;
    stream.eat(Chars$2.Dash);
    const afterNegative = stream.pos;
    const hasDecimal = stream.eatWhile(isNumber$1);
    const prevPos = stream.pos;
    if (stream.eat(Chars$2.Dot)) {
        // It’s perfectly valid to have numbers like `1.`, which enforces
        // value to float unit type
        const hasFloat = stream.eatWhile(isNumber$1);
        if (!hasDecimal && !hasFloat) {
            // Lone dot
            stream.pos = prevPos;
        }
    }
    // Edge case: consumed dash only: not a number, bail-out
    if (stream.pos === afterNegative) {
        stream.pos = start;
    }
    return stream.pos !== start;
}
function isIdentPrefix(code) {
    return code === Chars$2.At || code === Chars$2.Dollar;
}
/**
 * If given character is an operator, returns it’s type
 */
function operatorType(ch) {
    return (ch === Chars$2.Sibling && OperatorType.Sibling)
        || (ch === Chars$2.Excl && OperatorType.Important)
        || (ch === Chars$2.Comma && OperatorType.ArgumentDelimiter)
        || (ch === Chars$2.Colon && OperatorType.PropertyDelimiter)
        || (ch === Chars$2.Dash && OperatorType.ValueDelimiter)
        || void 0;
}
/**
 * Check if given code is a hex value (/0-9a-f/)
 */
function isHex(code) {
    return isNumber$1(code) || isAlpha$1(code, 65, 70); // A-F
}
function isKeyword(code) {
    return isAlphaNumericWord(code) || code === Chars$2.Dash;
}
function isBracket$1(code) {
    return code === Chars$2.RoundBracketOpen || code === Chars$2.RoundBracketClose;
}
function isLiteral$1(code) {
    return isAlphaWord(code) || code === Chars$2.Percent || code === Chars$2.Slash;
}
/**
 * Parses given color value from abbreviation into RGBA format
 */
function parseColor(value, alpha) {
    let r = '0';
    let g = '0';
    let b = '0';
    let a = Number(alpha != null && alpha !== '' ? alpha : 1);
    if (value === 't') {
        a = 0;
    }
    else {
        switch (value.length) {
            case 0:
                break;
            case 1:
                r = g = b = value + value;
                break;
            case 2:
                r = g = b = value;
                break;
            case 3:
                r = value[0] + value[0];
                g = value[1] + value[1];
                b = value[2] + value[2];
                break;
            default:
                value += value;
                r = value.slice(0, 2);
                g = value.slice(2, 4);
                b = value.slice(4, 6);
        }
    }
    return {
        r: parseInt(r, 16),
        g: parseInt(g, 16),
        b: parseInt(b, 16),
        a
    };
}
/**
 * Check if scanner reader must consume dash after given token.
 * Used in cases where user must explicitly separate numeric values
 */
function shouldConsumeDashAfter(token) {
    return token.type === 'ColorValue' || (token.type === 'NumberValue' && !token.unit);
}
/**
 * Merges last adjacent tokens into a single literal.
 * This function is used to overcome edge case when function name was parsed
 * as a list of separate tokens. For example, a `scale3d()` value will be
 * parsed as literal and number tokens (`scale` and `3d`) which is a perfectly
 * valid abbreviation but undesired result. This function will detect last adjacent
 * literal and number values and combine them into single literal
 */
function mergeTokens(scanner, tokens) {
    let start = 0;
    let end = 0;
    while (tokens.length) {
        const token = last(tokens);
        if (token.type === 'Literal' || token.type === 'NumberValue') {
            start = token.start;
            if (!end) {
                end = token.end;
            }
            tokens.pop();
        }
        else {
            break;
        }
    }
    if (start !== end) {
        tokens.push(createLiteral(scanner, start, end));
    }
}
function last(arr) {
    return arr[arr.length - 1];
}

function tokenScanner(tokens) {
    return {
        tokens,
        start: 0,
        pos: 0,
        size: tokens.length
    };
}
function peek$2(scanner) {
    return scanner.tokens[scanner.pos];
}
function readable(scanner) {
    return scanner.pos < scanner.size;
}
function consume$1(scanner, test) {
    if (test(peek$2(scanner))) {
        scanner.pos++;
        return true;
    }
    return false;
}
function error(scanner, message, token = peek$2(scanner)) {
    if (token && token.start != null) {
        message += ` at ${token.start}`;
    }
    const err = new Error(message);
    err['pos'] = token && token.start;
    return err;
}

function parser(tokens, options = {}) {
    const scanner = tokenScanner(tokens);
    const result = [];
    let property;
    while (readable(scanner)) {
        if (property = consumeProperty(scanner, options)) {
            result.push(property);
        }
        else if (!consume$1(scanner, isSiblingOperator)) {
            throw error(scanner, 'Unexpected token');
        }
    }
    return result;
}
/**
 * Consumes single CSS property
 */
function consumeProperty(scanner, options) {
    let name;
    let important = false;
    let valueFragment;
    const value = [];
    const token = peek$2(scanner);
    const valueMode = !!options.value;
    if (!valueMode && isLiteral(token) && !isFunctionStart(scanner)) {
        scanner.pos++;
        name = token.value;
        // Consume any following value delimiter after property name
        consume$1(scanner, isValueDelimiter);
    }
    // Skip whitespace right after property name, if any
    if (valueMode) {
        consume$1(scanner, isWhiteSpace$1);
    }
    while (readable(scanner)) {
        if (consume$1(scanner, isImportant)) {
            important = true;
        }
        else if (valueFragment = consumeValue(scanner, valueMode)) {
            value.push(valueFragment);
        }
        else if (!consume$1(scanner, isFragmentDelimiter)) {
            break;
        }
    }
    if (name || value.length || important) {
        return { name, value, important };
    }
}
/**
 * Consumes single value fragment, e.g. all value tokens before comma
 */
function consumeValue(scanner, inArgument) {
    const result = [];
    let token;
    let args;
    while (readable(scanner)) {
        token = peek$2(scanner);
        if (isValue(token)) {
            scanner.pos++;
            if (isLiteral(token) && (args = consumeArguments(scanner))) {
                result.push({
                    type: 'FunctionCall',
                    name: token.value,
                    arguments: args
                });
            }
            else {
                result.push(token);
            }
        }
        else if (isValueDelimiter(token) || (inArgument && isWhiteSpace$1(token))) {
            scanner.pos++;
        }
        else {
            break;
        }
    }
    return result.length
        ? { type: 'CSSValue', value: result }
        : void 0;
}
function consumeArguments(scanner) {
    const start = scanner.pos;
    if (consume$1(scanner, isOpenBracket$1)) {
        const args = [];
        let value;
        while (readable(scanner) && !consume$1(scanner, isCloseBracket$1)) {
            if (value = consumeValue(scanner, true)) {
                args.push(value);
            }
            else if (!consume$1(scanner, isWhiteSpace$1) && !consume$1(scanner, isArgumentDelimiter)) {
                throw error(scanner, 'Unexpected token');
            }
        }
        scanner.start = start;
        return args;
    }
}
function isLiteral(token) {
    return token && token.type === 'Literal';
}
function isBracket(token, open) {
    return token && token.type === 'Bracket' && (open == null || token.open === open);
}
function isOpenBracket$1(token) {
    return isBracket(token, true);
}
function isCloseBracket$1(token) {
    return isBracket(token, false);
}
function isWhiteSpace$1(token) {
    return token && token.type === 'WhiteSpace';
}
function isOperator(token, operator) {
    return token && token.type === 'Operator' && (!operator || token.operator === operator);
}
function isSiblingOperator(token) {
    return isOperator(token, OperatorType.Sibling);
}
function isArgumentDelimiter(token) {
    return isOperator(token, OperatorType.ArgumentDelimiter);
}
function isFragmentDelimiter(token) {
    return isArgumentDelimiter(token);
}
function isImportant(token) {
    return isOperator(token, OperatorType.Important);
}
function isValue(token) {
    return token.type === 'StringValue'
        || token.type === 'ColorValue'
        || token.type === 'NumberValue'
        || token.type === 'Literal'
        || token.type === 'Field'
        || token.type === 'CustomProperty';
}
function isValueDelimiter(token) {
    return isOperator(token, OperatorType.PropertyDelimiter)
        || isOperator(token, OperatorType.ValueDelimiter);
}
function isFunctionStart(scanner) {
    const t1 = scanner.tokens[scanner.pos];
    const t2 = scanner.tokens[scanner.pos + 1];
    return t1 && t2 && isLiteral(t1) && t2.type === 'Bracket';
}

/**
 * Parses given abbreviation into property set
 */
function parse$2(abbr, options) {
    try {
        const tokens = typeof abbr === 'string' ? tokenize(abbr, options && options.value) : abbr;
        return parser(tokens, options);
    }
    catch (err) {
        if (err instanceof ScannerError && typeof abbr === 'string') {
            err.message += `\n${abbr}\n${'-'.repeat(err.pos)}^`;
        }
        throw err;
    }
}

/**
 * Merges attributes in current node: de-duplicates attributes with the same name
 * and merges class names
 */
function mergeAttributes(node, config) {
    if (!node.attributes) {
        return;
    }
    const attributes = [];
    const lookup = {};
    for (const attr of node.attributes) {
        if (attr.name) {
            const attrName = attr.name;
            if (attrName in lookup) {
                const prev = lookup[attrName];
                if (attrName === 'class') {
                    prev.value = mergeValue(prev.value, attr.value, ' ');
                }
                else {
                    mergeDeclarations(prev, attr, config);
                }
            }
            else {
                // Create new attribute instance so we can safely modify it later
                attributes.push(lookup[attrName] = Object.assign({}, attr));
            }
        }
        else {
            attributes.push(attr);
        }
    }
    node.attributes = attributes;
}
/**
 * Merges two token lists into single list. Adjacent strings are merged together
 */
function mergeValue(prev, next, glue) {
    if (prev && next) {
        if (prev.length && glue) {
            append(prev, glue);
        }
        for (const t of next) {
            append(prev, t);
        }
        return prev;
    }
    const result = prev || next;
    return result && result.slice();
}
/**
 * Merges data from `src` attribute into `dest` and returns it
 */
function mergeDeclarations(dest, src, config) {
    dest.name = src.name;
    if (!config.options['output.reverseAttributes']) {
        dest.value = src.value;
    }
    // Keep high-priority properties
    if (!dest.implied) {
        dest.implied = src.implied;
    }
    if (!dest.boolean) {
        dest.boolean = src.boolean;
    }
    if (dest.valueType !== 'expression') {
        dest.valueType = src.valueType;
    }
    return dest;
}
function append(tokens, value) {
    const lastIx = tokens.length - 1;
    if (typeof tokens[lastIx] === 'string' && typeof value === 'string') {
        tokens[lastIx] += value;
    }
    else {
        tokens.push(value);
    }
}

/**
 * Walks over each child node of given markup abbreviation AST node (not including
 * given one) and invokes `fn` on each node.
 * The `fn` callback accepts context node, list of ancestor nodes and optional
 * state object
 */
function walk$1(node, fn, state) {
    const ancestors = [node];
    const callback = (ctx) => {
        fn(ctx, ancestors, state);
        ancestors.push(ctx);
        ctx.children.forEach(callback);
        ancestors.pop();
    };
    node.children.forEach(callback);
}
/**
 * Finds node which is the deepest for in current node or node itself.
 */
function findDeepest(node) {
    let parent;
    while (node.children.length) {
        parent = node;
        node = node.children[node.children.length - 1];
    }
    return { parent, node };
}
function isNode(node) {
    return node.type === 'AbbreviationNode';
}

/**
 * Finds matching snippet from `registry` and resolves it into a parsed abbreviation.
 * Resolved node is then updated or replaced with matched abbreviation tree.
 *
 * A HTML registry basically contains aliases to another Emmet abbreviations,
 * e.g. a predefined set of name, attributes and so on, possibly a complex
 * abbreviation with multiple elements. So we have to get snippet, parse it
 * and recursively resolve it.
 */
function resolveSnippets(abbr, config) {
    const stack = [];
    const reversed = config.options['output.reverseAttributes'];
    const resolve = (child) => {
        const snippet = child.name && config.snippets[child.name];
        // A snippet in stack means circular reference.
        // It can be either a user error or a perfectly valid snippet like
        // "img": "img[src alt]/", e.g. an element with predefined shape.
        // In any case, simply stop parsing and keep element as is
        if (!snippet || stack.includes(snippet)) {
            return null;
        }
        const snippetAbbr = parseAbbreviation(snippet, config);
        stack.push(snippet);
        walkResolve(snippetAbbr, resolve);
        stack.pop();
        // Add attributes from current node into every top-level node of parsed abbreviation
        for (const topNode of snippetAbbr.children) {
            if (child.attributes) {
                const from = topNode.attributes || [];
                const to = child.attributes || [];
                topNode.attributes = reversed ? to.concat(from) : from.concat(to);
            }
            mergeNodes(child, topNode);
        }
        return snippetAbbr;
    };
    walkResolve(abbr, resolve);
    return abbr;
}
function walkResolve(node, resolve, config) {
    let children = [];
    for (const child of node.children) {
        const resolved = resolve(child);
        if (resolved) {
            children = children.concat(resolved.children);
            const deepest = findDeepest(resolved);
            if (isNode(deepest.node)) {
                deepest.node.children = deepest.node.children.concat(walkResolve(child, resolve));
            }
        }
        else {
            children.push(child);
            child.children = walkResolve(child, resolve);
        }
    }
    return node.children = children;
}
/**
 * Adds data from first node into second node
 */
function mergeNodes(from, to) {
    if (from.selfClosing) {
        to.selfClosing = true;
    }
    if (from.value != null) {
        to.value = from.value;
    }
    if (from.repeat) {
        to.repeat = from.repeat;
    }
}

const expressionStart = '{';
const expressionEnd = '}';
function createOutputStream(options, level = 0) {
    return {
        options,
        value: '',
        level,
        offset: 0,
        line: 0,
        column: 0
    };
}
/**
 * Pushes plain string into output stream without newline processing
 */
function push(stream, text) {
    const processText = stream.options['output.text'];
    _push(stream, processText(text, stream.offset, stream.line, stream.column));
}
/**
 * Pushes given string with possible newline formatting into output
 */
function pushString(stream, value) {
    // If given value contains newlines, we should push content line-by-line and
    // use `pushNewline()` to maintain proper line/column state
    const lines = splitByLines$1(value);
    for (let i = 0, il = lines.length - 1; i <= il; i++) {
        push(stream, lines[i]);
        if (i !== il) {
            pushNewline(stream, true);
        }
    }
}
/**
 * Pushes new line into given output stream
 */
function pushNewline(stream, indent) {
    const baseIndent = stream.options['output.baseIndent'];
    const newline = stream.options['output.newline'];
    push(stream, newline + baseIndent);
    stream.line++;
    stream.column = baseIndent.length;
    if (indent) {
        pushIndent(stream, indent === true ? stream.level : indent);
    }
}
/**
 * Adds indentation of `size` to current output stream
 */
function pushIndent(stream, size = stream.level) {
    const indent = stream.options['output.indent'];
    push(stream, indent.repeat(Math.max(size, 0)));
}
/**
 * Pushes field/tabstop into output stream
 */
function pushField(stream, index, placeholder) {
    const field = stream.options['output.field'];
    // NB: use `_push` instead of `push` to skip text processing
    _push(stream, field(index, placeholder, stream.offset, stream.line, stream.column));
}
/**
 * Returns given tag name formatted according to given config
 */
function tagName(name, config) {
    return strCase(name, config.options['output.tagCase']);
}
/**
 * Returns given attribute name formatted according to given config
 */
function attrName(name, config) {
    return strCase(name, config.options['output.attributeCase']);
}
/**
 * Returns character for quoting value of given attribute
 */
function attrQuote(attr, config, isOpen) {
    if (attr.valueType === 'expression') {
        return isOpen ? expressionStart : expressionEnd;
    }
    return config.options['output.attributeQuotes'] === 'single' ? '\'' : '"';
}
/**
 * Check if given attribute is boolean
 */
function isBooleanAttribute(attr, config) {
    return attr.boolean
        || config.options['output.booleanAttributes'].includes((attr.name || '').toLowerCase());
}
/**
 * Returns a token for self-closing tag, depending on current options
 */
function selfClose(config) {
    switch (config.options['output.selfClosingStyle']) {
        case 'xhtml': return ' /';
        case 'xml': return '/';
        default: return '';
    }
}
/**
 * Check if given tag name belongs to inline-level element
 * @param node Parsed node or tag name
 */
function isInline(node, config) {
    if (typeof node === 'string') {
        return config.options.inlineElements.includes(node.toLowerCase());
    }
    // inline node is a node either with inline-level name or text-only node
    return node.name ? isInline(node.name, config) : Boolean(node.value && !node.attributes);
}
/**
 * Splits given text by lines
 */
function splitByLines$1(text) {
    return text.split(/\r\n|\r|\n/g);
}
/**
 * Pushes raw string into output stream without any processing
 */
function _push(stream, text) {
    stream.value += text;
    stream.offset += text.length;
    stream.column += text.length;
}
function strCase(str, type) {
    if (type) {
        return type === 'upper' ? str.toUpperCase() : str.toLowerCase();
    }
    return str;
}

const elementMap = {
    p: 'span',
    ul: 'li',
    ol: 'li',
    table: 'tr',
    tr: 'td',
    tbody: 'tr',
    thead: 'tr',
    tfoot: 'tr',
    colgroup: 'col',
    select: 'option',
    optgroup: 'option',
    audio: 'source',
    video: 'source',
    object: 'param',
    map: 'area'
};
function implicitTag(node, ancestors, config) {
    if (!node.name && node.attributes) {
        resolveImplicitTag(node, ancestors, config);
    }
}
function resolveImplicitTag(node, ancestors, config) {
    const parent = getParentElement(ancestors);
    const contextName = config.context ? config.context.name : '';
    const parentName = lowercase(parent ? parent.name : contextName);
    node.name = elementMap[parentName]
        || (isInline(parentName, config) ? 'span' : 'div');
}
function lowercase(str) {
    return (str || '').toLowerCase();
}
/**
 * Returns closest element node from given ancestors list
 */
function getParentElement(ancestors) {
    for (let i = ancestors.length - 1; i >= 0; i--) {
        const elem = ancestors[i];
        if (isNode(elem)) {
            return elem;
        }
    }
}

var latin = {
	"common": ["lorem", "ipsum", "dolor", "sit", "amet", "consectetur", "adipisicing", "elit"],
	"words": ["exercitationem", "perferendis", "perspiciatis", "laborum", "eveniet",
		"sunt", "iure", "nam", "nobis", "eum", "cum", "officiis", "excepturi",
		"odio", "consectetur", "quasi", "aut", "quisquam", "vel", "eligendi",
		"itaque", "non", "odit", "tempore", "quaerat", "dignissimos",
		"facilis", "neque", "nihil", "expedita", "vitae", "vero", "ipsum",
		"nisi", "animi", "cumque", "pariatur", "velit", "modi", "natus",
		"iusto", "eaque", "sequi", "illo", "sed", "ex", "et", "voluptatibus",
		"tempora", "veritatis", "ratione", "assumenda", "incidunt", "nostrum",
		"placeat", "aliquid", "fuga", "provident", "praesentium", "rem",
		"necessitatibus", "suscipit", "adipisci", "quidem", "possimus",
		"voluptas", "debitis", "sint", "accusantium", "unde", "sapiente",
		"voluptate", "qui", "aspernatur", "laudantium", "soluta", "amet",
		"quo", "aliquam", "saepe", "culpa", "libero", "ipsa", "dicta",
		"reiciendis", "nesciunt", "doloribus", "autem", "impedit", "minima",
		"maiores", "repudiandae", "ipsam", "obcaecati", "ullam", "enim",
		"totam", "delectus", "ducimus", "quis", "voluptates", "dolores",
		"molestiae", "harum", "dolorem", "quia", "voluptatem", "molestias",
		"magni", "distinctio", "omnis", "illum", "dolorum", "voluptatum", "ea",
		"quas", "quam", "corporis", "quae", "blanditiis", "atque", "deserunt",
		"laboriosam", "earum", "consequuntur", "hic", "cupiditate",
		"quibusdam", "accusamus", "ut", "rerum", "error", "minus", "eius",
		"ab", "ad", "nemo", "fugit", "officia", "at", "in", "id", "quos",
		"reprehenderit", "numquam", "iste", "fugiat", "sit", "inventore",
		"beatae", "repellendus", "magnam", "recusandae", "quod", "explicabo",
		"doloremque", "aperiam", "consequatur", "asperiores", "commodi",
		"optio", "dolor", "labore", "temporibus", "repellat", "veniam",
		"architecto", "est", "esse", "mollitia", "nulla", "a", "similique",
		"eos", "alias", "dolore", "tenetur", "deleniti", "porro", "facere",
		"maxime", "corrupti"]
};

var ru = {
	"common": ["далеко-далеко", "за", "словесными", "горами", "в стране", "гласных", "и согласных", "живут", "рыбные", "тексты"],
	"words": ["вдали", "от всех", "они", "буквенных", "домах", "на берегу", "семантика",
		"большого", "языкового", "океана", "маленький", "ручеек", "даль",
		"журчит", "по всей", "обеспечивает", "ее","всеми", "необходимыми",
		"правилами", "эта", "парадигматическая", "страна", "которой", "жаренные",
		"предложения", "залетают", "прямо", "рот", "даже", "всемогущая",
		"пунктуация", "не", "имеет", "власти", "над", "рыбными", "текстами",
		"ведущими", "безорфографичный", "образ", "жизни", "однажды", "одна",
		"маленькая", "строчка","рыбного", "текста", "имени", "lorem", "ipsum",
		"решила", "выйти", "большой", "мир", "грамматики", "великий", "оксмокс",
		"предупреждал", "о", "злых", "запятых", "диких", "знаках", "вопроса",
		"коварных", "точках", "запятой", "но", "текст", "дал", "сбить",
		"себя", "толку", "он", "собрал", "семь", "своих", "заглавных", "букв",
		"подпоясал", "инициал", "за", "пояс", "пустился", "дорогу",
		"взобравшись", "первую", "вершину", "курсивных", "гор", "бросил",
		"последний", "взгляд", "назад", "силуэт", "своего", "родного", "города",
		"буквоград", "заголовок", "деревни", "алфавит", "подзаголовок", "своего",
		"переулка", "грустный", "реторический", "вопрос", "скатился", "его",
		"щеке", "продолжил", "свой", "путь", "дороге", "встретил", "рукопись",
		"она", "предупредила",  "моей", "все", "переписывается", "несколько",
		"раз", "единственное", "что", "меня", "осталось", "это", "приставка",
		"возвращайся", "ты", "лучше", "свою", "безопасную", "страну", "послушавшись",
		"рукописи", "наш", "продолжил", "свой", "путь", "вскоре", "ему",
		"повстречался", "коварный", "составитель", "рекламных", "текстов",
		"напоивший", "языком", "речью", "заманивший", "свое", "агентство",
		"которое", "использовало", "снова", "снова", "своих", "проектах",
		"если", "переписали", "то", "живет", "там", "до", "сих", "пор"]
};

var sp = {
	"common": ["mujer", "uno", "dolor", "más", "de", "poder", "mismo", "si"],
	"words": ["ejercicio", "preferencia", "perspicacia", "laboral", "paño",
		"suntuoso", "molde", "namibia", "planeador", "mirar", "demás", "oficinista", "excepción",
		"odio", "consecuencia", "casi", "auto", "chicharra", "velo", "elixir",
		"ataque", "no", "odio", "temporal", "cuórum", "dignísimo",
		"facilismo", "letra", "nihilista", "expedición", "alma", "alveolar", "aparte",
		"león", "animal", "como", "paria", "belleza", "modo", "natividad",
		"justo", "ataque", "séquito", "pillo", "sed", "ex", "y", "voluminoso",
		"temporalidad", "verdades", "racional", "asunción", "incidente", "marejada",
		"placenta", "amanecer", "fuga", "previsor", "presentación", "lejos",
		"necesariamente", "sospechoso", "adiposidad", "quindío", "pócima",
		"voluble", "débito", "sintió", "accesorio", "falda", "sapiencia",
		"volutas", "queso", "permacultura", "laudo", "soluciones", "entero",
		"pan", "litro", "tonelada", "culpa", "libertario", "mosca", "dictado",
		"reincidente", "nascimiento", "dolor", "escolar", "impedimento", "mínima",
		"mayores", "repugnante", "dulce", "obcecado", "montaña", "enigma",
		"total", "deletéreo", "décima", "cábala", "fotografía", "dolores",
		"molesto", "olvido", "paciencia", "resiliencia", "voluntad", "molestias",
		"magnífico", "distinción", "ovni", "marejada", "cerro", "torre", "y",
		"abogada", "manantial", "corporal", "agua", "crepúsculo", "ataque", "desierto",
		"laboriosamente", "angustia", "afortunado", "alma", "encefalograma",
		"materialidad", "cosas", "o", "renuncia", "error", "menos", "conejo",
		"abadía", "analfabeto", "remo", "fugacidad", "oficio", "en", "almácigo", "vos", "pan",
		"represión", "números", "triste", "refugiado", "trote", "inventor",
		"corchea", "repelente", "magma", "recusado", "patrón", "explícito",
		"paloma", "síndrome", "inmune", "autoinmune", "comodidad",
		"ley", "vietnamita", "demonio", "tasmania", "repeler", "apéndice",
		"arquitecto", "columna", "yugo", "computador", "mula", "a", "propósito",
		"fantasía", "alias", "rayo", "tenedor", "deleznable", "ventana", "cara",
		"anemia", "corrupto"]
};

const vocabularies = { ru, sp, latin };
const reLorem = /^lorem([a-z]*)(\d*)(-\d*)?$/i;
function lorem(node, ancestors, config) {
    let m;
    if (node.name && (m = node.name.match(reLorem))) {
        const db = vocabularies[m[1]] || vocabularies.latin;
        const minWordCount = m[2] ? Math.max(1, Number(m[2])) : 30;
        const maxWordCount = m[3] ? Math.max(minWordCount, Number(m[3].slice(1))) : minWordCount;
        const wordCount = rand(minWordCount, maxWordCount);
        const repeat = node.repeat || findRepeater(ancestors);
        node.name = node.attributes = void 0;
        node.value = [paragraph(db, wordCount, !repeat || repeat.value === 0)];
        if (node.repeat && ancestors.length > 1) {
            resolveImplicitTag(node, ancestors, config);
        }
    }
}
/**
 * Returns random integer between <code>from</code> and <code>to</code> values
 */
function rand(from, to) {
    return Math.floor(Math.random() * (to - from) + from);
}
function sample(arr, count) {
    const len = arr.length;
    const iterations = Math.min(len, count);
    const result = [];
    while (result.length < iterations) {
        const str = arr[rand(0, len)];
        if (!result.includes(str)) {
            result.push(str);
        }
    }
    return result;
}
function choice(val) {
    return val[rand(0, val.length - 1)];
}
function sentence(words, end) {
    if (words.length) {
        words = [capitalize(words[0])].concat(words.slice(1));
    }
    return words.join(' ') + (end || choice('?!...')); // more dots than question marks
}
function capitalize(word) {
    return word[0].toUpperCase() + word.slice(1);
}
/**
 * Insert commas at randomly selected words. This function modifies values
 * inside `words` array
 */
function insertCommas(words) {
    if (words.length < 2) {
        return words;
    }
    words = words.slice();
    const len = words.length;
    const hasComma = /,$/;
    let totalCommas = 0;
    if (len > 3 && len <= 6) {
        totalCommas = rand(0, 1);
    }
    else if (len > 6 && len <= 12) {
        totalCommas = rand(0, 2);
    }
    else {
        totalCommas = rand(1, 4);
    }
    for (let i = 0, pos; i < totalCommas; i++) {
        pos = rand(0, len - 2);
        if (!hasComma.test(words[pos])) {
            words[pos] += ',';
        }
    }
    return words;
}
/**
 * Generate a paragraph of "Lorem ipsum" text
 * @param dict Words dictionary
 * @param wordCount Words count in paragraph
 * @param startWithCommon Should paragraph start with common "lorem ipsum" sentence.
 */
function paragraph(dict, wordCount, startWithCommon) {
    const result = [];
    let totalWords = 0;
    let words;
    if (startWithCommon && dict.common) {
        words = dict.common.slice(0, wordCount);
        totalWords += words.length;
        result.push(sentence(insertCommas(words), '.'));
    }
    while (totalWords < wordCount) {
        words = sample(dict.words, Math.min(rand(2, 30), wordCount - totalWords));
        totalWords += words.length;
        result.push(sentence(insertCommas(words)));
    }
    return result.join(' ');
}
function findRepeater(ancestors) {
    for (let i = ancestors.length - 1; i >= 0; i--) {
        const element = ancestors[i];
        if (element.type === 'AbbreviationNode' && element.repeat) {
            return element.repeat;
        }
    }
}

/**
 * XSL transformer: removes `select` attributes from certain nodes that contain
 * children
 */
function xsl(node) {
    if (matchesName(node.name) && node.attributes && (node.children.length || node.value)) {
        node.attributes = node.attributes.filter(isAllowed);
    }
}
function isAllowed(attr) {
    return attr.name !== 'select';
}
function matchesName(name) {
    return name === 'xsl:variable' || name === 'xsl:with-param';
}

const reElement = /^(-+)([a-z0-9]+[a-z0-9-]*)/i;
const reModifier = /^(_+)([a-z0-9]+[a-z0-9-_]*)/i;
const blockCandidates1 = (className) => /^[a-z]\-/i.test(className);
const blockCandidates2 = (className) => /^[a-z]/i.test(className);
function bem(node, ancestors, config) {
    expandClassNames(node);
    expandShortNotation(node, ancestors, config);
}
/**
 * Expands existing class names in BEM notation in given `node`.
 * For example, if node contains `b__el_mod` class name, this method ensures
 * that element contains `b__el` class as well
 */
function expandClassNames(node) {
    const data = getBEMData(node);
    const classNames = [];
    for (const cl of data.classNames) {
        // remove all modifiers and element prefixes from class name to get a base element name
        const ix = cl.indexOf('_');
        if (ix > 0 && !cl.startsWith('-')) {
            classNames.push(cl.slice(0, ix));
            classNames.push(cl.slice(ix));
        }
        else {
            classNames.push(cl);
        }
    }
    if (classNames.length) {
        data.classNames = classNames.filter(uniqueClass);
        data.block = findBlockName(data.classNames);
        updateClass(node, data.classNames.join(' '));
    }
}
/**
 * Expands short BEM notation, e.g. `-element` and `_modifier`
 */
function expandShortNotation(node, ancestors, config) {
    const data = getBEMData(node);
    const classNames = [];
    const { options } = config;
    const path = ancestors.slice(1).concat(node);
    for (let cl of data.classNames) {
        let prefix = '';
        let m;
        const originalClass = cl;
        // parse element definition (could be only one)
        if (m = cl.match(reElement)) {
            prefix = getBlockName(path, m[1].length, config.context) + options['bem.element'] + m[2];
            classNames.push(prefix);
            cl = cl.slice(m[0].length);
        }
        // parse modifiers definitions
        if (m = cl.match(reModifier)) {
            if (!prefix) {
                prefix = getBlockName(path, m[1].length);
                classNames.push(prefix);
            }
            classNames.push(`${prefix}${options['bem.modifier']}${m[2]}`);
            cl = cl.slice(m[0].length);
        }
        if (cl === originalClass) {
            // class name wasn’t modified: it’s not a BEM-specific class,
            // add it as-is into output
            classNames.push(originalClass);
        }
    }
    const arrClassNames = classNames.filter(uniqueClass);
    if (arrClassNames.length) {
        updateClass(node, arrClassNames.join(' '));
    }
}
/**
 * Returns BEM data from given abbreviation node
 */
function getBEMData(node) {
    if (!node._bem) {
        let classValue = '';
        if (node.attributes) {
            for (const attr of node.attributes) {
                if (attr.name === 'class' && attr.value) {
                    classValue = stringifyValue(attr.value);
                    break;
                }
            }
        }
        node._bem = parseBEM(classValue);
    }
    return node._bem;
}
function getBEMDataFromContext(context) {
    if (!context._bem) {
        context._bem = parseBEM(context.attributes && context.attributes.class || '');
    }
    return context._bem;
}
/**
 * Parses BEM data from given class name
 */
function parseBEM(classValue) {
    const classNames = classValue ? classValue.split(/\s+/) : [];
    return {
        classNames,
        block: findBlockName(classNames)
    };
}
/**
 * Returns block name for given `node` by `prefix`, which tells the depth of
 * of parent node lookup
 */
function getBlockName(ancestors, depth = 0, context) {
    const maxParentIx = 0;
    let parentIx = Math.max(ancestors.length - depth, maxParentIx);
    do {
        const parent = ancestors[parentIx];
        if (parent) {
            const data = getBEMData(parent);
            if (data.block) {
                return data.block;
            }
        }
    } while (maxParentIx < parentIx--);
    if (context) {
        const data = getBEMDataFromContext(context);
        if (data.block) {
            return data.block;
        }
    }
    return '';
}
function findBlockName(classNames) {
    return find(classNames, blockCandidates1)
        || find(classNames, blockCandidates2)
        || void 0;
}
/**
 * Finds class name from given list which may be used as block name
 */
function find(classNames, filter) {
    for (const cl of classNames) {
        if (reElement.test(cl) || reModifier.test(cl)) {
            break;
        }
        if (filter(cl)) {
            return cl;
        }
    }
}
function updateClass(node, value) {
    for (const attr of node.attributes) {
        if (attr.name === 'class') {
            attr.value = [value];
            break;
        }
    }
}
function stringifyValue(value) {
    let result = '';
    for (const t of value) {
        result += typeof t === 'string' ? t : t.name;
    }
    return result;
}
function uniqueClass(item, ix, arr) {
    return !!item && arr.indexOf(item) === ix;
}

function walk(abbr, visitor, state) {
    const callback = (ctx, index, items) => {
        const { parent, current } = state;
        state.parent = current;
        state.current = ctx;
        visitor(ctx, index, items, state, next);
        state.current = current;
        state.parent = parent;
    };
    const next = (node, index, items) => {
        state.ancestors.push(state.current);
        callback(node, index, items);
        state.ancestors.pop();
    };
    abbr.children.forEach(callback);
}
function createWalkState(config) {
    return {
        // @ts-ignore: Will set value in iterator
        current: null,
        parent: void 0,
        ancestors: [],
        config,
        field: 1,
        out: createOutputStream(config.options)
    };
}

const caret = [{ type: 'Field', index: 0, name: '' }];
/**
 * Check if given node is a snippet: a node without name and attributes
 */
function isSnippet(node) {
    return node ? !node.name && !node.attributes : false;
}
/**
 * Check if given node is inline-level element, e.g. element with explicitly
 * defined node name
 */
function isInlineElement(node, config) {
    return node ? isInline(node, config) : false;
}
/**
 * Check if given value token is a field
 */
function isField(token) {
    return typeof token === 'object' && token.type === 'Field';
}
function pushTokens(tokens, state) {
    const { out } = state;
    let largestIndex = -1;
    for (const t of tokens) {
        if (typeof t === 'string') {
            pushString(out, t);
        }
        else {
            pushField(out, state.field + t.index, t.name);
            if (t.index > largestIndex) {
                largestIndex = t.index;
            }
        }
    }
    if (largestIndex !== -1) {
        state.field += largestIndex + 1;
    }
}
/**
 * Splits given value token by lines: returns array where each entry is a token list
 * for a single line
 */
function splitByLines(tokens) {
    const result = [];
    let line = [];
    for (const t of tokens) {
        if (typeof t === 'string') {
            const lines = t.split(/\r\n?|\n/g);
            line.push(lines.shift() || '');
            while (lines.length) {
                result.push(line);
                line = [lines.shift() || ''];
            }
        }
        else {
            line.push(t);
        }
    }
    line.length && result.push(line);
    return result;
}
/**
 * Check if given attribute should be outputted
 */
function shouldOutputAttribute(attr) {
    // In case if attribute is implied, check if it has a defined value:
    // either non-empty value or quoted empty value
    return !attr.implied || attr.valueType !== 'raw' || (!!attr.value && attr.value.length > 0);
}

var TemplateChars;
(function (TemplateChars) {
    /** `[` character */
    TemplateChars[TemplateChars["Start"] = 91] = "Start";
    /** `]` character */
    TemplateChars[TemplateChars["End"] = 93] = "End";
    /* `_` character */
    TemplateChars[TemplateChars["Underscore"] = 95] = "Underscore";
    /* `-` character */
    TemplateChars[TemplateChars["Dash"] = 45] = "Dash";
})(TemplateChars || (TemplateChars = {}));
/**
 * Splits given string into template tokens.
 * Template is a string which contains placeholders which are uppercase names
 * between `[` and `]`, for example: `[PLACEHOLDER]`.
 * Unlike other templates, a placeholder may contain extra characters before and
 * after name: `[%PLACEHOLDER.]`. If data for `PLACEHOLDER` is defined, it will
 * be outputted with with these extra character, otherwise will be completely omitted.
 */
function template(text) {
    const tokens = [];
    const scanner = { pos: 0, text };
    let placeholder;
    let offset = scanner.pos;
    let pos = scanner.pos;
    while (scanner.pos < scanner.text.length) {
        pos = scanner.pos;
        if (placeholder = consumePlaceholder(scanner)) {
            if (offset !== scanner.pos) {
                tokens.push(text.slice(offset, pos));
            }
            tokens.push(placeholder);
            offset = scanner.pos;
        }
        else {
            scanner.pos++;
        }
    }
    if (offset !== scanner.pos) {
        tokens.push(text.slice(offset));
    }
    return tokens;
}
/**
 * Consumes placeholder like `[#ID]` from given scanner
 */
function consumePlaceholder(scanner) {
    if (peek$1(scanner) === TemplateChars.Start) {
        const start = ++scanner.pos;
        let namePos = start;
        let afterPos = start;
        let stack = 1;
        while (scanner.pos < scanner.text.length) {
            const code = peek$1(scanner);
            if (isTokenStart(code)) {
                namePos = scanner.pos;
                while (isToken(peek$1(scanner))) {
                    scanner.pos++;
                }
                afterPos = scanner.pos;
            }
            else {
                if (code === TemplateChars.Start) {
                    stack++;
                }
                else if (code === TemplateChars.End) {
                    if (--stack === 0) {
                        return {
                            before: scanner.text.slice(start, namePos),
                            after: scanner.text.slice(afterPos, scanner.pos++),
                            name: scanner.text.slice(namePos, afterPos)
                        };
                    }
                }
                scanner.pos++;
            }
        }
    }
}
function peek$1(scanner, pos = scanner.pos) {
    return scanner.text.charCodeAt(pos);
}
function isTokenStart(code) {
    return code >= 65 && code <= 90; // A-Z
}
function isToken(code) {
    return isTokenStart(code)
        || (code > 47 && code < 58) /* 0-9 */
        || code === TemplateChars.Underscore
        || code === TemplateChars.Dash;
}

function createCommentState(config) {
    const { options } = config;
    return {
        enabled: options['comment.enabled'],
        trigger: options['comment.trigger'],
        before: options['comment.before'] ? template(options['comment.before']) : void 0,
        after: options['comment.after'] ? template(options['comment.after']) : void 0
    };
}
/**
 * Adds comment prefix for given node, if required
 */
function commentNodeBefore(node, state) {
    if (shouldComment(node, state) && state.comment.before) {
        output(node, state.comment.before, state);
    }
}
/**
 * Adds comment suffix for given node, if required
 */
function commentNodeAfter(node, state) {
    if (shouldComment(node, state) && state.comment.after) {
        output(node, state.comment.after, state);
    }
}
/**
 * Check if given node should be commented
 */
function shouldComment(node, state) {
    const { comment } = state;
    if (!comment.enabled || !comment.trigger || !node.name || !node.attributes) {
        return false;
    }
    for (const attr of node.attributes) {
        if (attr.name && comment.trigger.includes(attr.name)) {
            return true;
        }
    }
    return false;
}
/**
 * Pushes given template tokens into output stream
 */
function output(node, tokens, state) {
    const attrs = {};
    const { out } = state;
    // Collect attributes payload
    for (const attr of node.attributes) {
        if (attr.name && attr.value) {
            attrs[attr.name.toUpperCase()] = attr.value;
        }
    }
    // Output parsed tokens
    for (const token of tokens) {
        if (typeof token === 'string') {
            pushString(out, token);
        }
        else if (attrs[token.name]) {
            pushString(out, token.before);
            pushTokens(attrs[token.name], state);
            pushString(out, token.after);
        }
    }
}

const htmlTagRegex = /^<([\w\-:]+)[\s>]/;
const reservedKeywords = new Set([
    'for', 'while', 'of', 'async', 'await', 'const', 'let', 'var', 'continue',
    'break', 'debugger', 'do', 'export', 'import', 'in', 'instanceof', 'new', 'return',
    'switch', 'this', 'throw', 'try', 'catch', 'typeof', 'void', 'with', 'yield'
]);
function html(abbr, config) {
    const state = createWalkState(config);
    state.comment = createCommentState(config);
    walk(abbr, element$1, state);
    return state.out.value;
}
/**
 * Outputs `node` content to output stream of `state`
 * @param node Context node
 * @param index Index of `node` in `items`
 * @param items List of `node`’s siblings
 * @param state Current walk state
 */
function element$1(node, index, items, state, next) {
    const { out, config } = state;
    const format = shouldFormat$1(node, index, items, state);
    // Pick offset level for current node
    const level = getIndent(state);
    out.level += level;
    format && pushNewline(out, true);
    if (node.name) {
        const name = tagName(node.name, config);
        commentNodeBefore(node, state);
        pushString(out, `<${name}`);
        if (node.attributes) {
            for (const attr of node.attributes) {
                if (shouldOutputAttribute(attr)) {
                    pushAttribute(attr, state);
                }
            }
        }
        if (node.selfClosing && !node.children.length && !node.value) {
            pushString(out, `${selfClose(config)}>`);
        }
        else {
            pushString(out, '>');
            if (!pushSnippet(node, state, next)) {
                if (node.value) {
                    const innerFormat = node.value.some(hasNewline) || startsWithBlockTag(node.value, config);
                    innerFormat && pushNewline(state.out, ++out.level);
                    pushTokens(node.value, state);
                    innerFormat && pushNewline(state.out, --out.level);
                }
                node.children.forEach(next);
                if (!node.value && !node.children.length) {
                    const innerFormat = config.options['output.formatLeafNode']
                        || config.options['output.formatForce'].includes(node.name);
                    innerFormat && pushNewline(state.out, ++out.level);
                    pushTokens(caret, state);
                    innerFormat && pushNewline(state.out, --out.level);
                }
            }
            pushString(out, `</${name}>`);
            commentNodeAfter(node, state);
        }
    }
    else if (!pushSnippet(node, state, next) && node.value) {
        // A text-only node (snippet)
        pushTokens(node.value, state);
        node.children.forEach(next);
    }
    if (format && index === items.length - 1 && state.parent) {
        const offset = isSnippet(state.parent) ? 0 : 1;
        pushNewline(out, out.level - offset);
    }
    out.level -= level;
}
/**
 * Outputs given attribute’s content into output stream
 */
function pushAttribute(attr, state) {
    const { out, config } = state;
    if (attr.name) {
        const attributes = config.options['markup.attributes'];
        const valuePrefix = config.options['markup.valuePrefix'];
        let { name, value } = attr;
        let lQuote = attrQuote(attr, config, true);
        let rQuote = attrQuote(attr, config);
        if (attributes) {
            name = getMultiValue(name, attributes, attr.multiple) || name;
        }
        name = attrName(name, config);
        if (config.options['jsx.enabled'] && attr.multiple) {
            lQuote = expressionStart;
            rQuote = expressionEnd;
        }
        const prefix = valuePrefix
            ? getMultiValue(attr.name, valuePrefix, attr.multiple)
            : null;
        if (prefix && (value === null || value === void 0 ? void 0 : value.length) === 1 && typeof value[0] === 'string') {
            // Add given prefix in object notation
            const val = value[0];
            value = [isPropKey(val) ? `${prefix}.${val}` : `${prefix}['${val}']`];
            if (config.options['jsx.enabled']) {
                lQuote = expressionStart;
                rQuote = expressionEnd;
            }
        }
        if (isBooleanAttribute(attr, config) && !value) {
            // If attribute value is omitted and it’s a boolean value, check for
            // `compactBoolean` option: if it’s disabled, set value to attribute name
            // (XML style)
            if (!config.options['output.compactBoolean']) {
                value = [name];
            }
        }
        else if (!value) {
            value = caret;
        }
        pushString(out, ' ' + name);
        if (value) {
            pushString(out, '=' + lQuote);
            pushTokens(value, state);
            pushString(out, rQuote);
        }
        else if (config.options['output.selfClosingStyle'] !== 'html') {
            pushString(out, '=' + lQuote + rQuote);
        }
    }
}
function pushSnippet(node, state, next) {
    if (node.value && node.children.length) {
        // We have a value and child nodes. In case if value contains fields,
        // we should output children as a content of first field
        const fieldIx = node.value.findIndex(isField);
        if (fieldIx !== -1) {
            pushTokens(node.value.slice(0, fieldIx), state);
            const line = state.out.line;
            let pos = fieldIx + 1;
            node.children.forEach(next);
            // If there was a line change, trim leading whitespace for better result
            if (state.out.line !== line && typeof node.value[pos] === 'string') {
                pushString(state.out, node.value[pos++].trimLeft());
            }
            pushTokens(node.value.slice(pos), state);
            return true;
        }
    }
    return false;
}
/**
 * Check if given node should be formatted in its parent context
 */
function shouldFormat$1(node, index, items, state) {
    const { config, parent } = state;
    if (!config.options['output.format']) {
        return false;
    }
    if (index === 0 && !parent) {
        // Do not format very first node
        return false;
    }
    // Do not format single child of snippet
    if (parent && isSnippet(parent) && items.length === 1) {
        return false;
    }
    /**
     * Adjacent text-only/snippet nodes
     */
    if (isSnippet(node)) {
        // Adjacent text-only/snippet nodes
        const format = isSnippet(items[index - 1]) || isSnippet(items[index + 1])
            // Has newlines: looks like wrapping code fragment
            || node.value.some(hasNewline)
            // Format as wrapper: contains children which will be outputted as field content
            || (node.value.some(isField) && node.children.length);
        if (format) {
            return true;
        }
    }
    if (isInline(node, config)) {
        // Check if inline node is the next sibling of block-level node
        if (index === 0) {
            // First node in parent: format if it’s followed by a block-level element
            for (let i = 0; i < items.length; i++) {
                if (!isInline(items[i], config)) {
                    return true;
                }
            }
        }
        else if (!isInline(items[index - 1], config)) {
            // Node is right after block-level element
            return true;
        }
        if (config.options['output.inlineBreak']) {
            // check for adjacent inline elements before and after current element
            let adjacentInline = 1;
            let before = index;
            let after = index;
            while (isInlineElement(items[--before], config)) {
                adjacentInline++;
            }
            while (isInlineElement(items[++after], config)) {
                adjacentInline++;
            }
            if (adjacentInline >= config.options['output.inlineBreak']) {
                return true;
            }
        }
        // Edge case: inline node contains node that should receive formatting
        for (let i = 0, il = node.children.length; i < il; i++) {
            if (shouldFormat$1(node.children[i], i, node.children, state)) {
                return true;
            }
        }
        return false;
    }
    return true;
}
/**
 * Returns indentation offset for given node
 */
function getIndent(state) {
    const { config, parent } = state;
    if (!parent || isSnippet(parent) || (parent.name && config.options['output.formatSkip'].includes(parent.name))) {
        return 0;
    }
    return 1;
}
/**
 * Check if given node value contains newlines
 */
function hasNewline(value) {
    return typeof value === 'string' && /\r|\n/.test(value);
}
/**
 * Check if given node value starts with block-level tag
 */
function startsWithBlockTag(value, config) {
    if (value.length && typeof value[0] === 'string') {
        const matches = htmlTagRegex.exec(value[0]);
        if ((matches === null || matches === void 0 ? void 0 : matches.length) && !config.options['inlineElements'].includes(matches[1].toLowerCase())) {
            return true;
        }
    }
    return false;
}
function getMultiValue(key, data, multiple) {
    return (multiple && data[`${key}*`]) || data[key];
}
function isPropKey(name) {
    return !reservedKeywords.has(name) && /^[a-zA-Z_$][\w_$]*$/.test(name);
}

function indentFormat(abbr, config, options) {
    const state = createWalkState(config);
    state.options = options || {};
    walk(abbr, element, state);
    return state.out.value;
}
/**
 * Outputs `node` content to output stream of `state`
 * @param node Context node
 * @param index Index of `node` in `items`
 * @param items List of `node`’s siblings
 * @param state Current walk state
 */
function element(node, index, items, state, next) {
    const { out, options } = state;
    const { primary, secondary } = collectAttributes(node);
    // Pick offset level for current node
    const level = state.parent ? 1 : 0;
    out.level += level;
    // Do not indent top-level elements
    if (shouldFormat(node, index, items, state)) {
        pushNewline(out, true);
    }
    if (node.name && (node.name !== 'div' || !primary.length)) {
        pushString(out, (options.beforeName || '') + node.name + (options.afterName || ''));
    }
    pushPrimaryAttributes(primary, state);
    pushSecondaryAttributes(secondary.filter(shouldOutputAttribute), state);
    if (node.selfClosing && !node.value && !node.children.length) {
        if (state.options.selfClose) {
            pushString(out, state.options.selfClose);
        }
    }
    else {
        pushValue(node, state);
        node.children.forEach(next);
    }
    out.level -= level;
}
/**
 * From given node, collects all attributes as `primary` (id, class) and
 * `secondary` (all the rest) lists. In most indent-based syntaxes, primary attribute
 * has special syntax
 */
function collectAttributes(node) {
    const primary = [];
    const secondary = [];
    if (node.attributes) {
        for (const attr of node.attributes) {
            if (isPrimaryAttribute(attr)) {
                primary.push(attr);
            }
            else {
                secondary.push(attr);
            }
        }
    }
    return { primary, secondary };
}
/**
 * Outputs given attributes as primary into output stream
 */
function pushPrimaryAttributes(attrs, state) {
    for (const attr of attrs) {
        if (attr.value) {
            if (attr.name === 'class') {
                pushString(state.out, '.');
                // All whitespace characters must be replaced with dots in class names
                const tokens = attr.value.map(t => typeof t === 'string' ? t.replace(/\s+/g, '.') : t);
                pushTokens(tokens, state);
            }
            else {
                // ID attribute
                pushString(state.out, '#');
                pushTokens(attr.value, state);
            }
        }
    }
}
/**
 * Outputs given attributes as secondary into output stream
 */
function pushSecondaryAttributes(attrs, state) {
    if (attrs.length) {
        const { out, config, options } = state;
        options.beforeAttribute && pushString(out, options.beforeAttribute);
        for (let i = 0; i < attrs.length; i++) {
            const attr = attrs[i];
            pushString(out, attrName(attr.name || '', config));
            if (isBooleanAttribute(attr, config) && !attr.value) {
                if (!config.options['output.compactBoolean'] && options.booleanValue) {
                    pushString(out, '=' + options.booleanValue);
                }
            }
            else {
                pushString(out, '=' + attrQuote(attr, config, true));
                pushTokens(attr.value || caret, state);
                pushString(out, attrQuote(attr, config));
            }
            if (i !== attrs.length - 1 && options.glueAttribute) {
                pushString(out, options.glueAttribute);
            }
        }
        options.afterAttribute && pushString(out, options.afterAttribute);
    }
}
/**
 * Outputs given node value into state output stream
 */
function pushValue(node, state) {
    // We should either output value or add caret but for leaf nodes only (no children)
    if (!node.value && node.children.length) {
        return;
    }
    const value = node.value || caret;
    const lines = splitByLines(value);
    const { out, options } = state;
    if (lines.length === 1) {
        if (node.name || node.attributes) {
            push(out, ' ');
        }
        pushTokens(value, state);
    }
    else {
        // We should format multi-line value with terminating `|` character
        // and same line length
        const lineLengths = [];
        let maxLength = 0;
        // Calculate lengths of all lines and max line length
        for (const line of lines) {
            const len = valueLength(line);
            lineLengths.push(len);
            if (len > maxLength) {
                maxLength = len;
            }
        }
        // Output each line, padded to max length
        out.level++;
        for (let i = 0; i < lines.length; i++) {
            pushNewline(out, true);
            options.beforeTextLine && push(out, options.beforeTextLine);
            pushTokens(lines[i], state);
            if (options.afterTextLine) {
                push(out, ' '.repeat(maxLength - lineLengths[i]));
                push(out, options.afterTextLine);
            }
        }
        out.level--;
    }
}
function isPrimaryAttribute(attr) {
    return attr.name === 'class' || attr.name === 'id';
}
/**
 * Calculates string length from given tokens
 */
function valueLength(tokens) {
    let len = 0;
    for (const token of tokens) {
        len += typeof token === 'string' ? token.length : token.name.length;
    }
    return len;
}
function shouldFormat(node, index, items, state) {
    // Do not format first top-level element or snippets
    if (!state.parent && index === 0) {
        return false;
    }
    return !isSnippet(node);
}

function haml(abbr, config) {
    return indentFormat(abbr, config, {
        beforeName: '%',
        beforeAttribute: '(',
        afterAttribute: ')',
        glueAttribute: ' ',
        afterTextLine: ' |',
        booleanValue: 'true',
        selfClose: '/'
    });
}

function slim(abbr, config) {
    return indentFormat(abbr, config, {
        beforeAttribute: ' ',
        glueAttribute: ' ',
        beforeTextLine: '| ',
        selfClose: '/'
    });
}

function pug(abbr, config) {
    return indentFormat(abbr, config, {
        beforeAttribute: '(',
        afterAttribute: ')',
        glueAttribute: ', ',
        beforeTextLine: '| ',
        selfClose: config.options['output.selfClosingStyle'] === 'xml' ? '/' : ''
    });
}

const formatters = { html, haml, slim, pug };
/**
 * Parses given Emmet abbreviation into a final abbreviation tree with all
 * required transformations applied
 */
function parse$1(abbr, config) {
    let oldTextValue;
    if (typeof abbr === 'string') {
        const parseOpt = Object.assign({}, config);
        if (config.options['jsx.enabled']) {
            parseOpt.jsx = true;
        }
        if (config.options['markup.href']) {
            parseOpt.href = true;
        }
        abbr = parseAbbreviation(abbr, parseOpt);
        // remove text field before snippets(abbr, config) call
        // as abbreviation(abbr, parseOpt) already handled it
        oldTextValue = config.text;
        config.text = undefined;
    }
    // Run abbreviation resolve in two passes:
    // 1. Map each node to snippets, which are abbreviations as well. A single snippet
    // may produce multiple nodes
    // 2. Transform every resolved node
    abbr = resolveSnippets(abbr, config);
    walk$1(abbr, transform, config);
    config.text = oldTextValue !== null && oldTextValue !== void 0 ? oldTextValue : config.text;
    return abbr;
}
/**
 * Converts given abbreviation to string according to provided `config`
 */
function stringify(abbr, config) {
    const formatter = formatters[config.syntax] || html;
    return formatter(abbr, config);
}
/**
 * Modifies given node and prepares it for output
 */
function transform(node, ancestors, config) {
    implicitTag(node, ancestors, config);
    mergeAttributes(node, config);
    lorem(node, ancestors, config);
    if (config.syntax === 'xsl') {
        xsl(node);
    }
    if (config.options['bem.enabled']) {
        bem(node, ancestors, config);
    }
}

var CSSSnippetType;
(function (CSSSnippetType) {
    CSSSnippetType["Raw"] = "Raw";
    CSSSnippetType["Property"] = "Property";
})(CSSSnippetType || (CSSSnippetType = {}));
const reProperty = /^([a-z-]+)(?:\s*:\s*([^\n\r;]+?);*)?$/;
const opt = { value: true };
/**
 * Creates structure for holding resolved CSS snippet
 */
function createSnippet(key, value) {
    // A snippet could be a raw text snippet (e.g. arbitrary text string) or a
    // CSS property with possible values separated by `|`.
    // In latter case, we have to parse snippet as CSS abbreviation
    const m = value.match(reProperty);
    if (m) {
        const keywords = {};
        const parsed = m[2] ? m[2].split('|').map(parseValue) : [];
        for (const item of parsed) {
            for (const cssVal of item) {
                collectKeywords(cssVal, keywords);
            }
        }
        return {
            type: CSSSnippetType.Property,
            key,
            property: m[1],
            value: parsed,
            keywords,
            dependencies: []
        };
    }
    return { type: CSSSnippetType.Raw, key, value };
}
/**
 * Nests more specific CSS properties into shorthand ones, e.g.
 * `background-position-x` -> `background-position` -> `background`
 */
function nest(snippets) {
    snippets = snippets.slice().sort(snippetsSort);
    const stack = [];
    let prev;
    // For sorted list of CSS properties, create dependency graph where each
    // shorthand property contains its more specific one, e.g.
    // background -> background-position -> background-position-x
    for (const cur of snippets.filter(isProperty)) {
        // Check if current property belongs to one from parent stack.
        // Since `snippets` array is sorted, items are perfectly aligned
        // from shorthands to more specific variants
        while (stack.length) {
            prev = stack[stack.length - 1];
            if (cur.property.startsWith(prev.property)
                && cur.property.charCodeAt(prev.property.length) === 45 /* - */) {
                prev.dependencies.push(cur);
                stack.push(cur);
                break;
            }
            stack.pop();
        }
        if (!stack.length) {
            stack.push(cur);
        }
    }
    return snippets;
}
/**
 * A sorting function for array of snippets
 */
function snippetsSort(a, b) {
    if (a.key === b.key) {
        return 0;
    }
    return a.key < b.key ? -1 : 1;
}
function parseValue(value) {
    return parse$2(value.trim(), opt)[0].value;
}
function isProperty(snippet) {
    return snippet.type === CSSSnippetType.Property;
}
function collectKeywords(cssVal, dest) {
    for (const v of cssVal.value) {
        if (v.type === 'Literal') {
            dest[v.value] = v;
        }
        else if (v.type === 'FunctionCall') {
            dest[v.name] = v;
        }
        else if (v.type === 'Field') {
            // Create literal from field, if available
            const value = v.name.trim();
            if (value) {
                dest[value] = { type: 'Literal', value };
            }
        }
    }
}

/**
 * Calculates how close `str1` matches `str2` using fuzzy match.
 * How matching works:
 * – first characters of both `str1` and `str2` *must* match
 * – `str1` length larger than `str2` length is allowed only when `unmatched` is true
 * – ideal match is when `str1` equals to `str2` (score: 1)
 * – next best match is `str2` starts with `str1` (score: 1 × percent of matched characters)
 * – other scores depend on how close characters of `str1` to the beginning of `str2`
 * @param partialMatch Allow length `str1` to be greater than `str2` length
 */
function scoreMatch(str1, str2, partialMatch = false) {
    str1 = str1.toLowerCase();
    str2 = str2.toLowerCase();
    if (str1 === str2) {
        return 1;
    }
    // Both strings MUST start with the same character
    if (!str1 || !str2 || str1.charCodeAt(0) !== str2.charCodeAt(0)) {
        return 0;
    }
    const str1Len = str1.length;
    const str2Len = str2.length;
    if (!partialMatch && str1Len > str2Len) {
        return 0;
    }
    // Characters from `str1` which are closer to the beginning of a `str2` should
    // have higher score.
    // For example, if `str2` is `abcde`, it’s max score is:
    // 5 + 4 + 3 + 2 + 1 = 15 (sum of character positions in reverse order)
    // Matching `abd` against `abcde` should produce:
    // 5 + 4 + 2 = 11
    // Acronym bonus for match right after `-`. Matching `abd` against `abc-de`
    // should produce:
    // 6 + 5 + 4 (use `d` position in `abd`, not in abc-de`)
    const minLength = Math.min(str1Len, str2Len);
    const maxLength = Math.max(str1Len, str2Len);
    let i = 1;
    let j = 1;
    let score = maxLength;
    let ch1 = 0;
    let ch2 = 0;
    let found = false;
    let acronym = false;
    while (i < str1Len) {
        ch1 = str1.charCodeAt(i);
        found = false;
        acronym = false;
        while (j < str2Len) {
            ch2 = str2.charCodeAt(j);
            if (ch1 === ch2) {
                found = true;
                score += maxLength - (acronym ? i : j);
                break;
            }
            // add acronym bonus for exactly next match after unmatched `-`
            acronym = ch2 === 45 /* - */;
            j++;
        }
        if (!found) {
            if (!partialMatch) {
                return 0;
            }
            break;
        }
        i++;
    }
    const matchRatio = i / maxLength;
    const delta = maxLength - minLength;
    const maxScore = sum(maxLength) - sum(delta);
    return (score * matchRatio) / maxScore;
}
/**
 * Calculates sum of first `n` numbers, e.g. 1+2+3+...n
 */
function sum(n) {
    return n * (n + 1) / 2;
}

function color(token, shortHex) {
    if (!token.r && !token.g && !token.b && !token.a) {
        return 'transparent';
    }
    else if (token.a === 1) {
        return asHex(token, shortHex);
    }
    return asRGB(token);
}
/**
 * Output given color as hex value
 * @param short Produce short value (e.g. #fff instead of #ffffff), if possible
 */
function asHex(token, short) {
    const fn = (short && isShortHex(token.r) && isShortHex(token.g) && isShortHex(token.b))
        ? toShortHex : toHex;
    return '#' + fn(token.r) + fn(token.g) + fn(token.b);
}
/**
 * Output current color as `rgba?(...)` CSS color
 */
function asRGB(token) {
    const values = [token.r, token.g, token.b];
    if (token.a !== 1) {
        values.push(frac(token.a, 8));
    }
    return `${values.length === 3 ? 'rgb' : 'rgba'}(${values.join(', ')})`;
}
function frac(num, digits = 4) {
    return num.toFixed(digits).replace(/\.?0+$/, '');
}
function isShortHex(hex) {
    return !(hex % 17);
}
function toShortHex(num) {
    return (num >> 4).toString(16);
}
function toHex(num) {
    return pad(num.toString(16), 2);
}
function pad(value, len) {
    while (value.length < len) {
        value = '0' + value;
    }
    return value;
}

const CSSAbbreviationScope = {
    /** Include all possible snippets in match */
    Global: '@@global',
    /** Include raw snippets only (e.g. no properties) in abbreviation match */
    Section: '@@section',
    /** Include properties only in abbreviation match */
    Property: '@@property',
    /** Resolve abbreviation in context of CSS property value */
    Value: '@@value',
};
function css(abbr, config) {
    var _a;
    const out = createOutputStream(config.options);
    const format = config.options['output.format'];
    if (((_a = config.context) === null || _a === void 0 ? void 0 : _a.name) === CSSAbbreviationScope.Section) {
        // For section context, filter out unmatched snippets
        abbr = abbr.filter(node => node.snippet);
    }
    for (let i = 0; i < abbr.length; i++) {
        if (format && i !== 0) {
            pushNewline(out, true);
        }
        property(abbr[i], out, config);
    }
    return out.value;
}
/**
 * Outputs given abbreviation node into output stream
 */
function property(node, out, config) {
    const isJSON = config.options['stylesheet.json'];
    if (node.name) {
        // It’s a CSS property
        const name = isJSON ? toCamelCase(node.name) : node.name;
        pushString(out, name + config.options['stylesheet.between']);
        if (node.value.length) {
            propertyValue(node, out, config);
        }
        else {
            pushField(out, 0, '');
        }
        if (isJSON) {
            // For CSS-in-JS, always finalize property with comma
            // NB: seems like `important` is not available in CSS-in-JS syntaxes
            push(out, ',');
        }
        else {
            outputImportant(node, out, true);
            push(out, config.options['stylesheet.after']);
        }
    }
    else {
        // It’s a regular snippet, output plain tokens without any additional formatting
        for (const cssVal of node.value) {
            for (const v of cssVal.value) {
                outputToken(v, out, config);
            }
        }
        outputImportant(node, out, node.value.length > 0);
    }
}
function propertyValue(node, out, config) {
    const isJSON = config.options['stylesheet.json'];
    const num = isJSON ? getSingleNumeric(node) : null;
    if (num && (!num.unit || num.unit === 'px')) {
        // For CSS-in-JS, if property contains single numeric value, output it
        // as JS number
        push(out, String(num.value));
    }
    else {
        const quote = getQuote(config);
        isJSON && push(out, quote);
        for (let i = 0; i < node.value.length; i++) {
            if (i !== 0) {
                push(out, ', ');
            }
            outputValue(node.value[i], out, config);
        }
        isJSON && push(out, quote);
    }
}
function outputImportant(node, out, separator) {
    if (node.important) {
        if (separator) {
            push(out, ' ');
        }
        push(out, '!important');
    }
}
function outputValue(value, out, config) {
    for (let i = 0, prevEnd = -1; i < value.value.length; i++) {
        const token = value.value[i];
        // Handle edge case: a field is written close to previous token like this: `foo${bar}`.
        // We should not add delimiter here
        if (i !== 0 && (token.type !== 'Field' || token.start !== prevEnd)) {
            push(out, ' ');
        }
        outputToken(token, out, config);
        prevEnd = token['end'];
    }
}
function outputToken(token, out, config) {
    if (token.type === 'ColorValue') {
        push(out, color(token, config.options['stylesheet.shortHex']));
    }
    else if (token.type === 'Literal' || token.type === 'CustomProperty') {
        pushString(out, token.value);
    }
    else if (token.type === 'NumberValue') {
        pushString(out, frac(token.value, 4) + token.unit);
    }
    else if (token.type === 'StringValue') {
        const quote = token.quote === 'double' ? '"' : '\'';
        pushString(out, quote + token.value + quote);
    }
    else if (token.type === 'Field') {
        pushField(out, token.index, token.name);
    }
    else if (token.type === 'FunctionCall') {
        push(out, token.name + '(');
        for (let i = 0; i < token.arguments.length; i++) {
            if (i) {
                push(out, ', ');
            }
            outputValue(token.arguments[i], out, config);
        }
        push(out, ')');
    }
}
/**
 * If value of given property is a single numeric value, returns this token
 */
function getSingleNumeric(node) {
    if (node.value.length === 1) {
        const cssVal = node.value[0];
        if (cssVal.value.length === 1 && cssVal.value[0].type === 'NumberValue') {
            return cssVal.value[0];
        }
    }
}
/**
 * Converts kebab-case string to camelCase
 */
function toCamelCase(str) {
    return str.replace(/\-(\w)/g, (_, letter) => letter.toUpperCase());
}
function getQuote(config) {
    return config.options['stylesheet.jsonDoubleQuotes'] ? '"' : '\'';
}

const gradientName = 'lg';
/**
 * Parses given Emmet abbreviation into a final abbreviation tree with all
 * required transformations applied
 */
function parse(abbr, config) {
    var _a;
    const snippets = ((_a = config.cache) === null || _a === void 0 ? void 0 : _a.stylesheetSnippets) || convertSnippets(config.snippets);
    if (config.cache) {
        config.cache.stylesheetSnippets = snippets;
    }
    if (typeof abbr === 'string') {
        abbr = parse$2(abbr, { value: isValueScope(config) });
    }
    const filteredSnippets = getSnippetsForScope(snippets, config);
    for (const node of abbr) {
        resolveNode(node, filteredSnippets, config);
    }
    return abbr;
}
/**
 * Converts given raw snippets into internal snippets representation
 */
function convertSnippets(snippets) {
    const result = [];
    for (const key of Object.keys(snippets)) {
        result.push(createSnippet(key, snippets[key]));
    }
    return nest(result);
}
/**
 * Resolves given node: finds matched CSS snippets using fuzzy match and resolves
 * keyword aliases from node value
 */
function resolveNode(node, snippets, config) {
    if (!resolveGradient(node, config)) {
        const score = config.options['stylesheet.fuzzySearchMinScore'];
        if (isValueScope(config)) {
            // Resolve as value of given CSS property
            const propName = config.context.name;
            const snippet = snippets.find(s => s.type === CSSSnippetType.Property && s.property === propName);
            resolveValueKeywords(node, config, snippet, score);
            node.snippet = snippet;
        }
        else if (node.name) {
            const snippet = findBestMatch(node.name, snippets, score, true);
            node.snippet = snippet;
            if (snippet) {
                if (snippet.type === CSSSnippetType.Property) {
                    resolveAsProperty(node, snippet, config);
                }
                else {
                    resolveAsSnippet(node, snippet);
                }
            }
        }
    }
    if (node.name || config.context) {
        // Resolve numeric values for CSS properties only
        resolveNumericValue(node, config);
    }
    return node;
}
/**
 * Resolves CSS gradient shortcut from given property, if possible
 */
function resolveGradient(node, config) {
    let gradientFn = null;
    const cssVal = node.value.length === 1 ? node.value[0] : null;
    if (cssVal && cssVal.value.length === 1) {
        const v = cssVal.value[0];
        if (v.type === 'FunctionCall' && v.name === gradientName) {
            gradientFn = v;
        }
    }
    if (gradientFn || node.name === gradientName) {
        if (!gradientFn) {
            gradientFn = {
                type: 'FunctionCall',
                name: 'linear-gradient',
                arguments: [cssValue(field(0, ''))]
            };
        }
        else {
            gradientFn = Object.assign(Object.assign({}, gradientFn), { name: 'linear-gradient' });
        }
        if (!config.context) {
            node.name = 'background-image';
        }
        node.value = [cssValue(gradientFn)];
        return true;
    }
    return false;
}
/**
 * Resolves given parsed abbreviation node as CSS property
 */
function resolveAsProperty(node, snippet, config) {
    const abbr = node.name;
    // Check for unmatched part of abbreviation
    // For example, in `dib` abbreviation the matched part is `d` and `ib` should
    // be considered as inline value. If unmatched fragment exists, we should check
    // if it matches actual value of snippet. If either explicit value is specified
    // or unmatched fragment did not resolve to to a keyword, we should consider
    // matched snippet as invalid
    const inlineValue = getUnmatchedPart(abbr, snippet.key);
    if (inlineValue) {
        if (node.value.length) {
            // Already have value: unmatched part indicates matched snippet is invalid
            return node;
        }
        const kw = resolveKeyword(inlineValue, config, snippet);
        if (!kw) {
            return node;
        }
        node.value.push(cssValue(kw));
    }
    node.name = snippet.property;
    if (node.value.length) {
        // Replace keyword alias from current abbreviation node with matched keyword
        resolveValueKeywords(node, config, snippet);
    }
    else if (snippet.value.length) {
        const defaultValue = snippet.value[0];
        // https://github.com/emmetio/emmet/issues/558
        // We should auto-select inserted value only if there’s multiple value
        // choice
        node.value = snippet.value.length === 1 || defaultValue.some(hasField)
            ? defaultValue
            : defaultValue.map(n => wrapWithField(n, config));
    }
    return node;
}
function resolveValueKeywords(node, config, snippet, minScore) {
    for (const cssVal of node.value) {
        const value = [];
        for (const token of cssVal.value) {
            if (token.type === 'Literal') {
                value.push(resolveKeyword(token.value, config, snippet, minScore) || token);
            }
            else if (token.type === 'FunctionCall') {
                // For function calls, we should find matching function call
                // and merge arguments
                const match = resolveKeyword(token.name, config, snippet, minScore);
                if (match && match.type === 'FunctionCall') {
                    value.push(Object.assign(Object.assign({}, match), { arguments: token.arguments.concat(match.arguments.slice(token.arguments.length)) }));
                }
                else {
                    value.push(token);
                }
            }
            else {
                value.push(token);
            }
        }
        cssVal.value = value;
    }
}
/**
 * Resolves given parsed abbreviation node as a snippet: a plain code chunk
 */
function resolveAsSnippet(node, snippet) {
    // When resolving snippets, we have to do the following:
    // 1. Replace field placeholders with actual field tokens.
    // 2. If input values given, put them instead of fields
    let offset = 0;
    let m;
    const reField = /\$\{(\d+)(:[^}]+)?\}/g;
    const inputValue = node.value[0];
    const outputValue = [];
    while (m = reField.exec(snippet.value)) {
        if (offset !== m.index) {
            outputValue.push(literal(snippet.value.slice(offset, m.index)));
        }
        offset = m.index + m[0].length;
        if (inputValue && inputValue.value.length) {
            outputValue.push(inputValue.value.shift());
        }
        else {
            outputValue.push(field(Number(m[1]), m[2] ? m[2].slice(1) : ''));
        }
    }
    const tail = snippet.value.slice(offset);
    if (tail) {
        outputValue.push(literal(tail));
    }
    node.name = void 0;
    node.value = [cssValue(...outputValue)];
    return node;
}
/**
 * Finds best matching item from `items` array
 * @param abbr  Abbreviation to match
 * @param items List of items for match
 * @param minScore The minimum score the best matched item should have to be a valid match.
 */
function findBestMatch(abbr, items, minScore = 0, partialMatch = false) {
    let matchedItem = null;
    let maxScore = 0;
    for (const item of items) {
        const score = scoreMatch(abbr, getScoringPart(item), partialMatch);
        if (score === 1) {
            // direct hit, no need to look further
            return item;
        }
        if (score && score >= maxScore) {
            maxScore = score;
            matchedItem = item;
        }
    }
    return maxScore >= minScore ? matchedItem : null;
}
function getScoringPart(item) {
    return typeof item === 'string' ? item : item.key;
}
/**
 * Returns a part of `abbr` that wasn’t directly matched against `str`.
 * For example, if abbreviation `poas` is matched against `position`,
 * the unmatched part will be `as` since `a` wasn’t found in string stream
 */
function getUnmatchedPart(abbr, str) {
    for (let i = 0, lastPos = 0; i < abbr.length; i++) {
        lastPos = str.indexOf(abbr[i], lastPos);
        if (lastPos === -1) {
            return abbr.slice(i);
        }
        lastPos++;
    }
    return '';
}
/**
 * Resolves given keyword shorthand into matched snippet keyword or global keyword,
 * if possible
 */
function resolveKeyword(kw, config, snippet, minScore) {
    let ref;
    if (snippet) {
        if (ref = findBestMatch(kw, Object.keys(snippet.keywords), minScore)) {
            return snippet.keywords[ref];
        }
        for (const dep of snippet.dependencies) {
            if (ref = findBestMatch(kw, Object.keys(dep.keywords), minScore)) {
                return dep.keywords[ref];
            }
        }
    }
    if (ref = findBestMatch(kw, config.options['stylesheet.keywords'], minScore)) {
        return literal(ref);
    }
    return null;
}
/**
 * Resolves numeric values in given abbreviation node
 */
function resolveNumericValue(node, config) {
    const aliases = config.options['stylesheet.unitAliases'];
    const unitless = config.options['stylesheet.unitless'];
    for (const v of node.value) {
        for (const t of v.value) {
            if (t.type === 'NumberValue') {
                if (t.unit) {
                    t.unit = aliases[t.unit] || t.unit;
                }
                else if (t.value !== 0 && !unitless.includes(node.name)) {
                    t.unit = t.rawValue.includes('.')
                        ? config.options['stylesheet.floatUnit']
                        : config.options['stylesheet.intUnit'];
                }
            }
        }
    }
}
/**
 * Constructs CSS value token
 */
function cssValue(...args) {
    return {
        type: 'CSSValue',
        value: args
    };
}
/**
 * Constructs literal token
 */
function literal(value) {
    return { type: 'Literal', value };
}
/**
 * Constructs field token
 */
function field(index, name) {
    return { type: 'Field', index, name };
}
/**
 * Check if given value contains fields
 */
function hasField(value) {
    for (const v of value.value) {
        if (v.type === 'Field' || (v.type === 'FunctionCall' && v.arguments.some(hasField))) {
            return true;
        }
    }
    return false;
}
/**
 * Wraps tokens of given abbreviation with fields
 */
function wrapWithField(node, config, state = { index: 1 }) {
    let value = [];
    for (const v of node.value) {
        switch (v.type) {
            case 'ColorValue':
                value.push(field(state.index++, color(v, config.options['stylesheet.shortHex'])));
                break;
            case 'Literal':
                value.push(field(state.index++, v.value));
                break;
            case 'NumberValue':
                value.push(field(state.index++, `${v.value}${v.unit}`));
                break;
            case 'StringValue':
                const q = v.quote === 'single' ? '\'' : '"';
                value.push(field(state.index++, q + v.value + q));
                break;
            case 'FunctionCall':
                value.push(field(state.index++, v.name), literal('('));
                for (let i = 0, il = v.arguments.length; i < il; i++) {
                    value = value.concat(wrapWithField(v.arguments[i], config, state).value);
                    if (i !== il - 1) {
                        value.push(literal(', '));
                    }
                }
                value.push(literal(')'));
                break;
            default:
                value.push(v);
        }
    }
    return Object.assign(Object.assign({}, node), { value });
}
/**
 * Check if abbreviation should be expanded in CSS value context
 */
function isValueScope(config) {
    if (config.context) {
        return config.context.name === CSSAbbreviationScope.Value || !config.context.name.startsWith('@@');
    }
    return false;
}
/**
 * Returns snippets for given scope
 */
function getSnippetsForScope(snippets, config) {
    if (config.context) {
        if (config.context.name === CSSAbbreviationScope.Section) {
            return snippets.filter(s => s.type === CSSSnippetType.Raw);
        }
        if (config.context.name === CSSAbbreviationScope.Property) {
            return snippets.filter(s => s.type === CSSSnippetType.Property);
        }
    }
    return snippets;
}

var markupSnippets = {
	"a": "a[href]",
	"a:blank": "a[href='http://${0}' target='_blank' rel='noopener noreferrer']",
	"a:link": "a[href='http://${0}']",
	"a:mail": "a[href='mailto:${0}']",
	"a:tel": "a[href='tel:+${0}']",
	"abbr": "abbr[title]",
	"acr|acronym": "acronym[title]",
	"base": "base[href]/",
	"basefont": "basefont/",
	"br": "br/",
	"frame": "frame/",
	"hr": "hr/",
	"bdo": "bdo[dir]",
	"bdo:r": "bdo[dir=rtl]",
	"bdo:l": "bdo[dir=ltr]",
	"col": "col/",
	"link": "link[rel=stylesheet href]/",
	"link:css": "link[href='${1:style}.css']",
	"link:print": "link[href='${1:print}.css' media=print]",
	"link:favicon": "link[rel='shortcut icon' type=image/x-icon href='${1:favicon.ico}']",
	"link:mf|link:manifest": "link[rel='manifest' href='${1:manifest.json}']",
	"link:touch": "link[rel=apple-touch-icon href='${1:favicon.png}']",
	"link:rss": "link[rel=alternate type=application/rss+xml title=RSS href='${1:rss.xml}']",
	"link:atom": "link[rel=alternate type=application/atom+xml title=Atom href='${1:atom.xml}']",
	"link:im|link:import": "link[rel=import href='${1:component}.html']",
	"meta": "meta/",
	"meta:utf": "meta[http-equiv=Content-Type content='text/html;charset=UTF-8']",
	"meta:vp": "meta[name=viewport content='width=${1:device-width}, initial-scale=${2:1.0}']",
	"meta:compat": "meta[http-equiv=X-UA-Compatible content='${1:IE=7}']",
	"meta:edge": "meta:compat[content='${1:ie=edge}']",
	"meta:redirect": "meta[http-equiv=refresh content='0; url=${1:http://example.com}']",
	"meta:refresh": "meta[http-equiv=refresh content='${1:5}']",
	"meta:kw": "meta[name=keywords content]",
	"meta:desc": "meta[name=description content]",
	"style": "style",
	"script": "script",
	"script:src": "script[src]",
	"script:module": "script[type=module src]",
	"img": "img[src alt]/",
	"img:s|img:srcset": "img[srcset src alt]",
	"img:z|img:sizes": "img[sizes srcset src alt]",
	"picture": "picture",
	"src|source": "source/",
	"src:sc|source:src": "source[src type]",
	"src:s|source:srcset": "source[srcset]",
	"src:t|source:type": "source[srcset type='${1:image/}']",
	"src:z|source:sizes": "source[sizes srcset]",
	"src:m|source:media": "source[media='(${1:min-width: })' srcset]",
	"src:mt|source:media:type": "source:media[type='${2:image/}']",
	"src:mz|source:media:sizes": "source:media[sizes srcset]",
	"src:zt|source:sizes:type": "source[sizes srcset type='${1:image/}']",
	"iframe": "iframe[src frameborder=0]",
	"embed": "embed[src type]/",
	"object": "object[data type]",
	"param": "param[name value]/",
	"map": "map[name]",
	"area": "area[shape coords href alt]/",
	"area:d": "area[shape=default]",
	"area:c": "area[shape=circle]",
	"area:r": "area[shape=rect]",
	"area:p": "area[shape=poly]",
	"form": "form[action]",
	"form:get": "form[method=get]",
	"form:post": "form[method=post]",
	"label": "label[for]",
	"input": "input[type=${1:text}]/",
	"inp": "input[name=${1} id=${1}]",
	"input:h|input:hidden": "input[type=hidden name]",
	"input:t|input:text": "inp[type=text]",
	"input:search": "inp[type=search]",
	"input:email": "inp[type=email]",
	"input:url": "inp[type=url]",
	"input:p|input:password": "inp[type=password]",
	"input:datetime": "inp[type=datetime]",
	"input:date": "inp[type=date]",
	"input:datetime-local": "inp[type=datetime-local]",
	"input:month": "inp[type=month]",
	"input:week": "inp[type=week]",
	"input:time": "inp[type=time]",
	"input:tel": "inp[type=tel]",
	"input:number": "inp[type=number]",
	"input:color": "inp[type=color]",
	"input:c|input:checkbox": "inp[type=checkbox]",
	"input:r|input:radio": "inp[type=radio]",
	"input:range": "inp[type=range]",
	"input:f|input:file": "inp[type=file]",
	"input:s|input:submit": "input[type=submit value]",
	"input:i|input:image": "input[type=image src alt]",
	"input:b|input:btn|input:button": "input[type=button value]",
	"input:reset": "input:button[type=reset]",
	"isindex": "isindex/",
	"select": "select[name=${1} id=${1}]",
	"select:d|select:disabled": "select[disabled.]",
	"opt|option": "option[value]",
	"textarea": "textarea[name=${1} id=${1} cols=${2:30} rows=${3:10}]",
	"marquee": "marquee[behavior direction]",
	"menu:c|menu:context": "menu[type=context]",
	"menu:t|menu:toolbar": "menu[type=toolbar]",
	"video": "video[src]",
	"audio": "audio[src]",
	"html:xml": "html[xmlns=http://www.w3.org/1999/xhtml]",
	"keygen": "keygen/",
	"command": "command/",
	"btn:s|button:s|button:submit" : "button[type=submit]",
	"btn:r|button:r|button:reset" : "button[type=reset]",
	"btn:b|button:b|button:button" : "button[type=button]",
	"btn:d|button:d|button:disabled" : "button[disabled.]",
	"fst:d|fset:d|fieldset:d|fieldset:disabled" : "fieldset[disabled.]",

	"bq": "blockquote",
	"fig": "figure",
	"figc": "figcaption",
	"pic": "picture",
	"ifr": "iframe",
	"emb": "embed",
	"obj": "object",
	"cap": "caption",
	"colg": "colgroup",
	"fst": "fieldset",
	"btn": "button",
	"optg": "optgroup",
	"tarea": "textarea",
	"leg": "legend",
	"sect": "section",
	"art": "article",
	"hdr": "header",
	"ftr": "footer",
	"adr": "address",
	"dlg": "dialog",
	"str": "strong",
	"prog": "progress",
	"mn": "main",
	"tem": "template",
	"fset": "fieldset",
	"datal": "datalist",
	"kg": "keygen",
	"out": "output",
	"det": "details",
	"sum": "summary",
	"cmd": "command",
	"data": "data[value]",
	"meter": "meter[value]",
	"time": "time[datetime]",

	"ri:d|ri:dpr": "img:s",
	"ri:v|ri:viewport": "img:z",
	"ri:a|ri:art": "pic>src:m+img",
	"ri:t|ri:type": "pic>src:t+img",

	"!!!": "{<!DOCTYPE html>}",
	"doc": "html[lang=${lang}]>(head>meta[charset=${charset}]+meta:vp+title{${1:Document}})+body",
	"!|html:5": "!!!+doc",

	"c": "{<!-- ${0} -->}",
	"cc:ie": "{<!--[if IE]>${0}<![endif]-->}",
	"cc:noie": "{<!--[if !IE]><!-->${0}<!--<![endif]-->}"
};

var stylesheetSnippets = {
	"@f": "@font-face {\n\tfont-family: ${1};\n\tsrc: url(${2});\n}",
	"@ff": "@font-face {\n\tfont-family: '${1:FontName}';\n\tsrc: url('${2:FileName}.eot');\n\tsrc: url('${2:FileName}.eot?#iefix') format('embedded-opentype'),\n\t\t url('${2:FileName}.woff') format('woff'),\n\t\t url('${2:FileName}.ttf') format('truetype'),\n\t\t url('${2:FileName}.svg#${1:FontName}') format('svg');\n\tfont-style: ${3:normal};\n\tfont-weight: ${4:normal};\n}",
	"@i|@import": "@import url(${0});",
	"@kf": "@keyframes ${1:identifier} {\n\t${2}\n}",
	"@m|@media": "@media ${1:screen} {\n\t${0}\n}",
	"ac": "align-content:start|end|flex-start|flex-end|center|space-between|space-around|stretch|space-evenly",
	"ai": "align-items:start|end|flex-start|flex-end|center|baseline|stretch",
	"anim": "animation:${1:name} ${2:duration} ${3:timing-function} ${4:delay} ${5:iteration-count} ${6:direction} ${7:fill-mode}",
	"animdel": "animation-delay:time",
	"animdir": "animation-direction:normal|reverse|alternate|alternate-reverse",
	"animdur": "animation-duration:${1:0}s",
	"animfm": "animation-fill-mode:both|forwards|backwards",
	"animic": "animation-iteration-count:1|infinite",
	"animn": "animation-name",
	"animps": "animation-play-state:running|paused",
	"animtf": "animation-timing-function:linear|ease|ease-in|ease-out|ease-in-out|cubic-bezier(${1:0.1}, ${2:0.7}, ${3:1.0}, ${3:0.1})",
	"ap": "appearance:none",
	"as": "align-self:start|end|auto|flex-start|flex-end|center|baseline|stretch",
	"b": "bottom",
	"bd": "border:${1:1px} ${2:solid} ${3:#000}",
	"bdb": "border-bottom:${1:1px} ${2:solid} ${3:#000}",
	"bdbc": "border-bottom-color:${1:#000}",
	"bdbi": "border-bottom-image:url(${0})",
	"bdbk": "border-break:close",
	"bdbli": "border-bottom-left-image:url(${0})|continue",
	"bdblrs": "border-bottom-left-radius",
	"bdbri": "border-bottom-right-image:url(${0})|continue",
	"bdbrrs": "border-bottom-right-radius",
	"bdbs": "border-bottom-style",
	"bdbw": "border-bottom-width",
	"bdc": "border-color:${1:#000}",
	"bdci": "border-corner-image:url(${0})|continue",
	"bdcl": "border-collapse:collapse|separate",
	"bdf": "border-fit:repeat|clip|scale|stretch|overwrite|overflow|space",
	"bdi": "border-image:url(${0})",
	"bdl": "border-left:${1:1px} ${2:solid} ${3:#000}",
	"bdlc": "border-left-color:${1:#000}",
	"bdlen": "border-length",
	"bdli": "border-left-image:url(${0})",
	"bdls": "border-left-style",
	"bdlw": "border-left-width",
	"bdr": "border-right:${1:1px} ${2:solid} ${3:#000}",
	"bdrc": "border-right-color:${1:#000}",
	"bdri": "border-right-image:url(${0})",
	"bdrs": "border-radius",
	"bdrst": "border-right-style",
	"bdrw": "border-right-width",
	"bds": "border-style:none|hidden|dotted|dashed|solid|double|dot-dash|dot-dot-dash|wave|groove|ridge|inset|outset",
	"bdsp": "border-spacing",
	"bdt": "border-top:${1:1px} ${2:solid} ${3:#000}",
	"bdtc": "border-top-color:${1:#000}",
	"bdti": "border-top-image:url(${0})",
	"bdtli": "border-top-left-image:url(${0})|continue",
	"bdtlrs": "border-top-left-radius",
	"bdtri": "border-top-right-image:url(${0})|continue",
	"bdtrrs": "border-top-right-radius",
	"bdts": "border-top-style",
	"bdtw": "border-top-width",
	"bdw": "border-width",
  "bbs": "border-block-start",
  "bbe": "border-block-end",
  "bis": "border-inline-start",
  "bie": "border-inline-end",
	"bfv": "backface-visibility:hidden|visible",
	"bg": "background:${1:#000}",
	"bg:n": "background: none",
	"bga": "background-attachment:fixed|scroll",
	"bgbk": "background-break:bounding-box|each-box|continuous",
	"bgc": "background-color:${1:#fff}",
	"bgcp": "background-clip:padding-box|border-box|content-box|no-clip",
	"bgi": "background-image:url(${0})",
	"bgo": "background-origin:padding-box|border-box|content-box",
	"bgp": "background-position:${1:0} ${2:0}",
	"bgpx": "background-position-x",
	"bgpy": "background-position-y",
	"bgr": "background-repeat:no-repeat|repeat-x|repeat-y|space|round",
	"bgsz": "background-size:contain|cover",
  "bs": "block-size",
	"bxsh": "box-shadow:${1:inset }${2:hoff} ${3:voff} ${4:blur} ${5:#000}|none",
	"bxsz": "box-sizing:border-box|content-box|border-box",
	"c": "color:${1:#000}",
	"cr": "color:rgb(${1:0}, ${2:0}, ${3:0})",
	"cra": "color:rgba(${1:0}, ${2:0}, ${3:0}, ${4:.5})",
	"cl": "clear:both|left|right|none",
	"cm": "/* ${0} */",
	"cnt": "content:'${0}'|normal|open-quote|no-open-quote|close-quote|no-close-quote|attr(${0})|counter(${0})|counters(${0})",
	"coi": "counter-increment",
	"colm": "columns",
	"colmc": "column-count",
	"colmf": "column-fill",
	"colmg": "column-gap",
	"colmr": "column-rule",
	"colmrc": "column-rule-color",
	"colmrs": "column-rule-style",
	"colmrw": "column-rule-width",
	"colms": "column-span",
	"colmw": "column-width",
	"cor": "counter-reset",
	"cp": "clip:auto|rect(${1:top} ${2:right} ${3:bottom} ${4:left})",
	"cps": "caption-side:top|bottom",
	"cur": "cursor:pointer|auto|default|crosshair|hand|help|move|pointer|text",
	"d": "display:block|none|flex|inline-flex|inline|inline-block|grid|inline-grid|subgrid|list-item|run-in|contents|table|inline-table|table-caption|table-column|table-column-group|table-header-group|table-footer-group|table-row|table-row-group|table-cell|ruby|ruby-base|ruby-base-group|ruby-text|ruby-text-group",
	"ec": "empty-cells:show|hide",
	"f": "font:${1:1em} ${2:sans-serif}",
	"fd": "font-display:auto|block|swap|fallback|optional",
	"fef": "font-effect:none|engrave|emboss|outline",
	"fem": "font-emphasize",
	"femp": "font-emphasize-position:before|after",
	"fems": "font-emphasize-style:none|accent|dot|circle|disc",
	"ff": "font-family:serif|sans-serif|cursive|fantasy|monospace",
	"fft": "font-family:\"Times New Roman\", Times, Baskerville, Georgia, serif",
	"ffa": "font-family:Arial, \"Helvetica Neue\", Helvetica, sans-serif",
	"ffv": "font-family:Verdana, Geneva, sans-serif",
	"fl": "float:left|right|none",
	"fs": "font-style:italic|normal|oblique",
	"fsm": "font-smoothing:antialiased|subpixel-antialiased|none",
	"fst": "font-stretch:normal|ultra-condensed|extra-condensed|condensed|semi-condensed|semi-expanded|expanded|extra-expanded|ultra-expanded",
	"fv": "font-variant:normal|small-caps",
	"fvs": "font-variation-settings:normal|inherit|initial|unset",
	"fw": "font-weight:normal|bold|bolder|lighter",
	"fx": "flex",
	"fxb": "flex-basis:fill|max-content|min-content|fit-content|content",
	"fxd": "flex-direction:row|row-reverse|column|column-reverse",
	"fxf": "flex-flow",
	"fxg": "flex-grow",
	"fxsh": "flex-shrink",
	"fxw": "flex-wrap:nowrap|wrap|wrap-reverse",
	"fsz": "font-size",
	"fsza": "font-size-adjust",
	"g": "gap",
	"gtc": "grid-template-columns:repeat(${0})|minmax()",
	"gtr": "grid-template-rows:repeat(${0})|minmax()",
	"gta": "grid-template-areas",
	"gt": "grid-template",
	"gg": "grid-gap",
	"gcg": "grid-column-gap",
	"grg": "grid-row-gap",
	"gac": "grid-auto-columns:auto|minmax()",
	"gar": "grid-auto-rows:auto|minmax()",
	"gaf": "grid-auto-flow:row|column|dense|inherit|initial|unset",
	"gd": "grid",
	"gc": "grid-column",
	"gcs": "grid-column-start",
	"gce": "grid-column-end",
	"gr": "grid-row",
	"grs": "grid-row-start",
	"gre": "grid-row-end",
	"ga": "grid-area",
	"h": "height",
  "is": "inline-size",
	"jc": "justify-content:start|end|stretch|flex-start|flex-end|center|space-between|space-around|space-evenly",
	"ji": "justify-items:start|end|center|stretch",
	"js": "justify-self:start|end|center|stretch",
	"l": "left",
	"lg": "background-image:linear-gradient(${1})",
	"lh": "line-height",
	"lis": "list-style",
	"lisi": "list-style-image",
	"lisp": "list-style-position:inside|outside",
	"list": "list-style-type:disc|circle|square|decimal|decimal-leading-zero|lower-roman|upper-roman",
	"lts": "letter-spacing:normal",
	"m": "margin",
	"mah": "max-height",
	"mar": "max-resolution",
	"maw": "max-width",
	"mb": "margin-bottom",
	"mih": "min-height",
	"mir": "min-resolution",
	"miw": "min-width",
	"ml": "margin-left",
	"mr": "margin-right",
	"mt": "margin-top",
  "mbs": "margin-block-start",
  "mbe": "margin-block-end",
  "mis": "margin-inline-start",
  "mie": "margin-inline-end",
	"ol": "outline",
	"olc": "outline-color:${1:#000}|invert",
	"olo": "outline-offset",
	"ols": "outline-style:none|dotted|dashed|solid|double|groove|ridge|inset|outset",
	"olw": "outline-width:thin|medium|thick",
	"op|opa": "opacity",
	"ord": "order",
	"ori": "orientation:landscape|portrait",
	"orp": "orphans",
	"ov": "overflow:hidden|visible|hidden|scroll|auto",
	"ovs": "overflow-style:scrollbar|auto|scrollbar|panner|move|marquee",
	"ovx": "overflow-x:hidden|visible|hidden|scroll|auto",
	"ovy": "overflow-y:hidden|visible|hidden|scroll|auto",
	"p": "padding",
	"pb": "padding-bottom",
	"pgba": "page-break-after:auto|always|left|right",
	"pgbb": "page-break-before:auto|always|left|right",
	"pgbi": "page-break-inside:auto|avoid",
	"pl": "padding-left",
	"pos": "position:relative|absolute|relative|fixed|static",
	"pr": "padding-right",
	"pt": "padding-top",
  "pbs": "padding-block-start",
  "pbe": "padding-block-end",
  "pis": "padding-inline-start",
  "pie": "padding-inline-end",
  "spbs": "scroll-padding-block-start",
  "spbe": "scroll-padding-block-end",
  "spis": "scroll-padding-inline-start",
  "spie": "scroll-padding-inline-end",
	"q": "quotes",
	"qen": "quotes:'\\201C' '\\201D' '\\2018' '\\2019'",
	"qru": "quotes:'\\00AB' '\\00BB' '\\201E' '\\201C'",
	"r": "right",
	"rsz": "resize:none|both|horizontal|vertical",
	"t": "top",
	"ta": "text-align:left|center|right|justify",
	"tal": "text-align-last:left|center|right",
	"tbl": "table-layout:fixed",
	"td": "text-decoration:none|underline|overline|line-through",
	"te": "text-emphasis:none|accent|dot|circle|disc|before|after",
	"th": "text-height:auto|font-size|text-size|max-size",
	"ti": "text-indent",
	"tj": "text-justify:auto|inter-word|inter-ideograph|inter-cluster|distribute|kashida|tibetan",
	"to": "text-outline:${1:0} ${2:0} ${3:#000}",
	"tov": "text-overflow:ellipsis|clip",
	"tr": "text-replace",
	"trf": "transform:${1}|skewX(${1:angle})|skewY(${1:angle})|scale(${1:x}, ${2:y})|scaleX(${1:x})|scaleY(${1:y})|scaleZ(${1:z})|scale3d(${1:x}, ${2:y}, ${3:z})|rotate(${1:angle})|rotateX(${1:angle})|rotateY(${1:angle})|rotateZ(${1:angle})|translate(${1:x}, ${2:y})|translateX(${1:x})|translateY(${1:y})|translateZ(${1:z})|translate3d(${1:tx}, ${2:ty}, ${3:tz})",
	"trfo": "transform-origin",
	"trfs": "transform-style:preserve-3d",
	"trs": "transition:${1:prop} ${2:time}",
	"trsde": "transition-delay:${1:time}",
	"trsdu": "transition-duration:${1:time}",
	"trsp": "transition-property:${1:prop}",
	"trstf": "transition-timing-function:${1:fn}",
	"tsh": "text-shadow:${1:hoff} ${2:voff} ${3:blur} ${4:#000}",
	"tt": "text-transform:uppercase|lowercase|capitalize|none",
	"tw": "text-wrap:none|normal|unrestricted|suppress",
	"us": "user-select:none",
	"v": "visibility:hidden|visible|collapse",
	"va": "vertical-align:top|super|text-top|middle|baseline|bottom|text-bottom|sub",
	"w": "width",
	"whs": "white-space:nowrap|pre|pre-wrap|pre-line|normal",
	"whsc": "white-space-collapse:normal|keep-all|loose|break-strict|break-all",
	"wid": "widows",
	"wm": "writing-mode:lr-tb|lr-tb|lr-bt|rl-tb|rl-bt|tb-rl|tb-lr|bt-lr|bt-rl",
	"wob": "word-break:normal|keep-all|break-all",
	"wos": "word-spacing",
	"wow": "word-wrap:none|unrestricted|suppress|break-word|normal",
	"z": "z-index",
	"zom": "zoom:1"
};

var xslSnippets = {
    "tm|tmatch": "xsl:template[match mode]",
    "tn|tname": "xsl:template[name]",
    "call": "xsl:call-template[name]",
    "ap": "xsl:apply-templates[select mode]",
    "api": "xsl:apply-imports",
    "imp": "xsl:import[href]",
    "inc": "xsl:include[href]",
    "ch": "xsl:choose",
    "wh|xsl:when": "xsl:when[test]",
    "ot": "xsl:otherwise",
    "if": "xsl:if[test]",
    "par": "xsl:param[name]",
    "pare": "xsl:param[name select]",
    "var": "xsl:variable[name]",
    "vare": "xsl:variable[name select]",
    "wp": "xsl:with-param[name select]",
    "key": "xsl:key[name match use]",
    "elem": "xsl:element[name]",
    "attr": "xsl:attribute[name]",
    "attrs": "xsl:attribute-set[name]",
    "cp": "xsl:copy[select]",
    "co": "xsl:copy-of[select]",
    "val": "xsl:value-of[select]",
    "for|each": "xsl:for-each[select]",
    "tex": "xsl:text",
    "com": "xsl:comment",
    "msg": "xsl:message[terminate=no]",
    "fall": "xsl:fallback",
    "num": "xsl:number[value]",
    "nam": "namespace-alias[stylesheet-prefix result-prefix]",
    "pres": "xsl:preserve-space[elements]",
    "strip": "xsl:strip-space[elements]",
    "proc": "xsl:processing-instruction[name]",
    "sort": "xsl:sort[select order]",
    "choose": "xsl:choose>xsl:when+xsl:otherwise",
    "xsl": "!!!+xsl:stylesheet[version=1.0 xmlns:xsl=http://www.w3.org/1999/XSL/Transform]>{\n|}",
    "!!!": "{<?xml version=\"1.0\" encoding=\"UTF-8\"?>}"
};

var pugSnippets = {
	"!!!": "{doctype html}"
};

var variables = {
	"lang": "en",
	"locale": "en-US",
	"charset": "UTF-8",
	"indentation": "\t",
	"newline": "\n"
};

/**
 * Default syntaxes for abbreviation types
 */
const defaultSyntaxes = {
    markup: 'html',
    stylesheet: 'css'
};
const defaultOptions$1 = {
    'inlineElements': [
        'a', 'abbr', 'acronym', 'applet', 'b', 'basefont', 'bdo',
        'big', 'br', 'button', 'cite', 'code', 'del', 'dfn', 'em', 'font', 'i',
        'iframe', 'img', 'input', 'ins', 'kbd', 'label', 'map', 'object', 'q',
        's', 'samp', 'select', 'small', 'span', 'strike', 'strong', 'sub', 'sup',
        'textarea', 'tt', 'u', 'var'
    ],
    'output.indent': '\t',
    'output.baseIndent': '',
    'output.newline': '\n',
    'output.tagCase': '',
    'output.attributeCase': '',
    'output.attributeQuotes': 'double',
    'output.format': true,
    'output.formatLeafNode': false,
    'output.formatSkip': ['html'],
    'output.formatForce': ['body'],
    'output.inlineBreak': 3,
    'output.compactBoolean': false,
    'output.booleanAttributes': [
        'contenteditable', 'seamless', 'async', 'autofocus',
        'autoplay', 'checked', 'controls', 'defer', 'disabled', 'formnovalidate',
        'hidden', 'ismap', 'loop', 'multiple', 'muted', 'novalidate', 'readonly',
        'required', 'reversed', 'selected', 'typemustmatch'
    ],
    'output.reverseAttributes': false,
    'output.selfClosingStyle': 'html',
    'output.field': (index, placeholder) => placeholder,
    'output.text': text => text,
    'markup.href': true,
    'comment.enabled': false,
    'comment.trigger': ['id', 'class'],
    'comment.before': '',
    'comment.after': '\n<!-- /[#ID][.CLASS] -->',
    'bem.enabled': false,
    'bem.element': '__',
    'bem.modifier': '_',
    'jsx.enabled': false,
    'stylesheet.keywords': ['auto', 'inherit', 'unset', 'none'],
    'stylesheet.unitless': ['z-index', 'line-height', 'opacity', 'font-weight', 'zoom', 'flex', 'flex-grow', 'flex-shrink'],
    'stylesheet.shortHex': true,
    'stylesheet.between': ': ',
    'stylesheet.after': ';',
    'stylesheet.intUnit': 'px',
    'stylesheet.floatUnit': 'em',
    'stylesheet.unitAliases': { e: 'em', p: '%', x: 'ex', r: 'rem' },
    'stylesheet.json': false,
    'stylesheet.jsonDoubleQuotes': false,
    'stylesheet.fuzzySearchMinScore': 0
};
const defaultConfig = {
    type: 'markup',
    syntax: 'html',
    variables,
    snippets: {},
    options: defaultOptions$1
};
/**
 * Default per-syntax config
 */
const syntaxConfig = {
    markup: {
        snippets: parseSnippets(markupSnippets),
    },
    xhtml: {
        options: {
            'output.selfClosingStyle': 'xhtml'
        }
    },
    xml: {
        options: {
            'output.selfClosingStyle': 'xml'
        }
    },
    xsl: {
        snippets: parseSnippets(xslSnippets),
        options: {
            'output.selfClosingStyle': 'xml'
        }
    },
    jsx: {
        options: {
            'jsx.enabled': true,
            'markup.attributes': {
                'class': 'className',
                'class*': 'styleName',
                'for': 'htmlFor'
            },
            'markup.valuePrefix': {
                'class*': 'styles'
            }
        }
    },
    vue: {
        options: {
            'markup.attributes': {
                'class*': ':class',
            }
        }
    },
    svelte: {
        options: {
            'jsx.enabled': true
        }
    },
    pug: {
        snippets: parseSnippets(pugSnippets)
    },
    stylesheet: {
        snippets: parseSnippets(stylesheetSnippets)
    },
    sass: {
        options: {
            'stylesheet.after': ''
        }
    },
    stylus: {
        options: {
            'stylesheet.between': ' ',
            'stylesheet.after': '',
        }
    }
};
/**
 * Parses raw snippets definitions with possibly multiple keys into a plan
 * snippet map
 */
function parseSnippets(snippets) {
    const result = {};
    Object.keys(snippets).forEach(k => {
        for (const name of k.split('|')) {
            result[name] = snippets[k];
        }
    });
    return result;
}
function resolveConfig(config = {}, globals = {}) {
    const type = config.type || 'markup';
    const syntax = config.syntax || defaultSyntaxes[type];
    return Object.assign(Object.assign(Object.assign({}, defaultConfig), config), { type,
        syntax, variables: mergedData(type, syntax, 'variables', config, globals), snippets: mergedData(type, syntax, 'snippets', config, globals), options: mergedData(type, syntax, 'options', config, globals) });
}
function mergedData(type, syntax, key, config, globals = {}) {
    const typeDefaults = syntaxConfig[type];
    const typeOverride = globals[type];
    const syntaxDefaults = syntaxConfig[syntax];
    const syntaxOverride = globals[syntax];
    return Object.assign(Object.assign(Object.assign(Object.assign(Object.assign(Object.assign({}, defaultConfig[key]), (typeDefaults && typeDefaults[key])), (syntaxDefaults && syntaxDefaults[key])), (typeOverride && typeOverride[key])), (syntaxOverride && syntaxOverride[key])), config[key]);
}

/**
 * Creates structure for scanning given string in backward direction
 */
function backwardScanner(text, start = 0) {
    return { text, start, pos: text.length };
}
/**
 * Check if given scanner position is at start of scanned text
 */
function sol(scanner) {
    return scanner.pos === scanner.start;
}
/**
 * “Peeks” character code an current scanner location without advancing it
 */
function peek(scanner, offset = 0) {
    return scanner.text.charCodeAt(scanner.pos - 1 + offset);
}
/**
 * Returns current character code and moves character location one symbol back
 */
function previous(scanner) {
    if (!sol(scanner)) {
        return scanner.text.charCodeAt(--scanner.pos);
    }
}
/**
 * Consumes current character code if it matches given `match` code or function
 */
function consume(scanner, match) {
    if (sol(scanner)) {
        return false;
    }
    const ok = typeof match === 'function'
        ? match(peek(scanner))
        : match === peek(scanner);
    if (ok) {
        scanner.pos--;
    }
    return !!ok;
}
function consumeWhile(scanner, match) {
    const start = scanner.pos;
    while (consume(scanner, match)) {
        // empty
    }
    return scanner.pos < start;
}

var Chars$1;
(function (Chars) {
    Chars[Chars["SingleQuote"] = 39] = "SingleQuote";
    Chars[Chars["DoubleQuote"] = 34] = "DoubleQuote";
    Chars[Chars["Escape"] = 92] = "Escape";
})(Chars$1 || (Chars$1 = {}));
/**
 * Check if given character code is a quote
 */
function isQuote(c) {
    return c === Chars$1.SingleQuote || c === Chars$1.DoubleQuote;
}
/**
 * Consumes quoted value, if possible
 * @return Returns `true` is value was consumed
 */
function consumeQuoted(scanner) {
    const start = scanner.pos;
    const quote = previous(scanner);
    if (isQuote(quote)) {
        while (!sol(scanner)) {
            if (previous(scanner) === quote && peek(scanner) !== Chars$1.Escape) {
                return true;
            }
        }
    }
    scanner.pos = start;
    return false;
}

var Brackets;
(function (Brackets) {
    Brackets[Brackets["SquareL"] = 91] = "SquareL";
    Brackets[Brackets["SquareR"] = 93] = "SquareR";
    Brackets[Brackets["RoundL"] = 40] = "RoundL";
    Brackets[Brackets["RoundR"] = 41] = "RoundR";
    Brackets[Brackets["CurlyL"] = 123] = "CurlyL";
    Brackets[Brackets["CurlyR"] = 125] = "CurlyR";
})(Brackets || (Brackets = {}));
const bracePairs = {
    [Brackets.SquareL]: Brackets.SquareR,
    [Brackets.RoundL]: Brackets.RoundR,
    [Brackets.CurlyL]: Brackets.CurlyR,
};

var Chars;
(function (Chars) {
    Chars[Chars["Tab"] = 9] = "Tab";
    Chars[Chars["Space"] = 32] = "Space";
    /** `-` character */
    Chars[Chars["Dash"] = 45] = "Dash";
    /** `/` character */
    Chars[Chars["Slash"] = 47] = "Slash";
    /** `:` character */
    Chars[Chars["Colon"] = 58] = "Colon";
    /** `=` character */
    Chars[Chars["Equals"] = 61] = "Equals";
    /** `<` character */
    Chars[Chars["AngleLeft"] = 60] = "AngleLeft";
    /** `>` character */
    Chars[Chars["AngleRight"] = 62] = "AngleRight";
})(Chars || (Chars = {}));
/**
 * Check if given reader’s current position points at the end of HTML tag
 */
function isHtml(scanner) {
    const start = scanner.pos;
    if (!consume(scanner, Chars.AngleRight)) {
        return false;
    }
    let ok = false;
    consume(scanner, Chars.Slash); // possibly self-closed element
    while (!sol(scanner)) {
        consumeWhile(scanner, isWhiteSpace);
        if (consumeIdent(scanner)) {
            // ate identifier: could be a tag name, boolean attribute or unquoted
            // attribute value
            if (consume(scanner, Chars.Slash)) {
                // either closing tag or invalid tag
                ok = consume(scanner, Chars.AngleLeft);
                break;
            }
            else if (consume(scanner, Chars.AngleLeft)) {
                // opening tag
                ok = true;
                break;
            }
            else if (consume(scanner, isWhiteSpace)) {
                // boolean attribute
                continue;
            }
            else if (consume(scanner, Chars.Equals)) {
                // simple unquoted value or invalid attribute
                if (consumeIdent(scanner)) {
                    continue;
                }
                break;
            }
            else if (consumeAttributeWithUnquotedValue(scanner)) {
                // identifier was a part of unquoted value
                ok = true;
                break;
            }
            // invalid tag
            break;
        }
        if (consumeAttribute(scanner)) {
            continue;
        }
        break;
    }
    scanner.pos = start;
    return ok;
}
/**
 * Consumes HTML attribute from given string.
 * @return `true` if attribute was consumed.
 */
function consumeAttribute(scanner) {
    return consumeAttributeWithQuotedValue(scanner) || consumeAttributeWithUnquotedValue(scanner);
}
function consumeAttributeWithQuotedValue(scanner) {
    const start = scanner.pos;
    if (consumeQuoted(scanner) && consume(scanner, Chars.Equals) && consumeIdent(scanner)) {
        return true;
    }
    scanner.pos = start;
    return false;
}
function consumeAttributeWithUnquotedValue(scanner) {
    const start = scanner.pos;
    const stack = [];
    while (!sol(scanner)) {
        const ch = peek(scanner);
        if (isCloseBracket(ch)) {
            stack.push(ch);
        }
        else if (isOpenBracket(ch)) {
            if (stack.pop() !== bracePairs[ch]) {
                // Unexpected open bracket
                break;
            }
        }
        else if (!isUnquotedValue(ch)) {
            break;
        }
        scanner.pos--;
    }
    if (start !== scanner.pos && consume(scanner, Chars.Equals) && consumeIdent(scanner)) {
        return true;
    }
    scanner.pos = start;
    return false;
}
/**
 * Consumes HTML identifier from stream
 */
function consumeIdent(scanner) {
    return consumeWhile(scanner, isIdent);
}
/**
 * Check if given character code belongs to HTML identifier
 */
function isIdent(ch) {
    return ch === Chars.Colon || ch === Chars.Dash || isAlpha(ch) || isNumber(ch);
}
/**
 * Check if given character code is alpha code (letter though A to Z)
 */
function isAlpha(ch) {
    ch &= ~32; // quick hack to convert any char code to uppercase char code
    return ch >= 65 && ch <= 90; // A-Z
}
/**
 * Check if given code is a number
 */
function isNumber(ch) {
    return ch > 47 && ch < 58;
}
/**
 * Check if given code is a whitespace
 */
function isWhiteSpace(ch) {
    return ch === Chars.Space || ch === Chars.Tab;
}
/**
 * Check if given code may belong to unquoted attribute value
 */
function isUnquotedValue(ch) {
    return !isNaN(ch) && ch !== Chars.Equals && !isWhiteSpace(ch) && !isQuote(ch);
}
function isOpenBracket(ch) {
    return ch === Brackets.CurlyL || ch === Brackets.RoundL || ch === Brackets.SquareL;
}
function isCloseBracket(ch) {
    return ch === Brackets.CurlyR || ch === Brackets.RoundR || ch === Brackets.SquareR;
}

const code = (ch) => ch.charCodeAt(0);
const specialChars = '#.*:$-_!@%^+>/'.split('').map(code);
const defaultOptions = {
    type: 'markup',
    lookAhead: true,
    prefix: ''
};
/**
 * Extracts Emmet abbreviation from given string.
 * The goal of this module is to extract abbreviation from current editor’s line,
 * e.g. like this: `<span>.foo[title=bar|]</span>` -> `.foo[title=bar]`, where
 * `|` is a current caret position.
 * @param line A text line where abbreviation should be expanded
 * @param pos Caret position in line. If not given, uses end of line
 * @param options Extracting options
 */
function extractAbbreviation(line, pos = line.length, options = {}) {
    // make sure `pos` is within line range
    const opt = Object.assign(Object.assign({}, defaultOptions), options);
    pos = Math.min(line.length, Math.max(0, pos == null ? line.length : pos));
    if (opt.lookAhead) {
        pos = offsetPastAutoClosed(line, pos, opt);
    }
    let ch;
    const start = getStartOffset(line, pos, opt.prefix || '');
    if (start === -1) {
        return void 0;
    }
    const scanner = backwardScanner(line, start);
    scanner.pos = pos;
    const stack = [];
    while (!sol(scanner)) {
        ch = peek(scanner);
        if (stack.includes(Brackets.CurlyR)) {
            if (ch === Brackets.CurlyR) {
                stack.push(ch);
                scanner.pos--;
                continue;
            }
            if (ch !== Brackets.CurlyL) {
                scanner.pos--;
                continue;
            }
        }
        if (isCloseBrace(ch, opt.type)) {
            stack.push(ch);
        }
        else if (isOpenBrace(ch, opt.type)) {
            if (stack.pop() !== bracePairs[ch]) {
                // unexpected brace
                break;
            }
        }
        else if (stack.includes(Brackets.SquareR) || stack.includes(Brackets.CurlyR)) {
            // respect all characters inside attribute sets or text nodes
            scanner.pos--;
            continue;
        }
        else if (isHtml(scanner) || !isAbbreviation(ch)) {
            break;
        }
        scanner.pos--;
    }
    if (!stack.length && scanner.pos !== pos) {
        // Found something, remove some invalid symbols from the
        // beginning and return abbreviation
        const abbreviation = line.slice(scanner.pos, pos).replace(/^[*+>^]+/, '');
        return {
            abbreviation,
            location: pos - abbreviation.length,
            start: options.prefix
                ? start - options.prefix.length
                : pos - abbreviation.length,
            end: pos
        };
    }
}
/**
 * Returns new `line` index which is right after characters beyound `pos` that
 * editor will likely automatically close, e.g. }, ], and quotes
 */
function offsetPastAutoClosed(line, pos, options) {
    // closing quote is allowed only as a next character
    if (isQuote(line.charCodeAt(pos))) {
        pos++;
    }
    // offset pointer until non-autoclosed character is found
    while (isCloseBrace(line.charCodeAt(pos), options.type)) {
        pos++;
    }
    return pos;
}
/**
 * Returns start offset (left limit) in `line` where we should stop looking for
 * abbreviation: it’s nearest to `pos` location of `prefix` token
 */
function getStartOffset(line, pos, prefix) {
    if (!prefix) {
        return 0;
    }
    const scanner = backwardScanner(line);
    const compiledPrefix = prefix.split('').map(code);
    scanner.pos = pos;
    let result;
    while (!sol(scanner)) {
        if (consumePair(scanner, Brackets.SquareR, Brackets.SquareL) || consumePair(scanner, Brackets.CurlyR, Brackets.CurlyL)) {
            continue;
        }
        result = scanner.pos;
        if (consumeArray(scanner, compiledPrefix)) {
            return result;
        }
        scanner.pos--;
    }
    return -1;
}
/**
 * Consumes full character pair, if possible
 */
function consumePair(scanner, close, open) {
    const start = scanner.pos;
    if (consume(scanner, close)) {
        while (!sol(scanner)) {
            if (consume(scanner, open)) {
                return true;
            }
            scanner.pos--;
        }
    }
    scanner.pos = start;
    return false;
}
/**
 * Consumes all character codes from given array, right-to-left, if possible
 */
function consumeArray(scanner, arr) {
    const start = scanner.pos;
    let consumed = false;
    for (let i = arr.length - 1; i >= 0 && !sol(scanner); i--) {
        if (!consume(scanner, arr[i])) {
            break;
        }
        consumed = i === 0;
    }
    if (!consumed) {
        scanner.pos = start;
    }
    return consumed;
}
function isAbbreviation(ch) {
    return (ch > 64 && ch < 91) // uppercase letter
        || (ch > 96 && ch < 123) // lowercase letter
        || (ch > 47 && ch < 58) // number
        || specialChars.includes(ch); // special character
}
function isOpenBrace(ch, syntax) {
    return ch === Brackets.RoundL || (syntax === 'markup' && (ch === Brackets.SquareL || ch === Brackets.CurlyL));
}
function isCloseBrace(ch, syntax) {
    return ch === Brackets.RoundR || (syntax === 'markup' && (ch === Brackets.SquareR || ch === Brackets.CurlyR));
}

function expandAbbreviation(abbr, config) {
    const resolvedConfig = resolveConfig(config);
    return resolvedConfig.type === 'stylesheet'
        ? stylesheet(abbr, resolvedConfig)
        : markup(abbr, resolvedConfig);
}
/**
 * Expands given *markup* abbreviation (e.g. regular Emmet abbreviation that
 * produces structured output like HTML) and outputs it according to options
 * provided in config
 */
function markup(abbr, config) {
    return stringify(parse$1(abbr, config), config);
}
/**
 * Expands given *stylesheet* abbreviation (a special Emmet abbreviation designed for
 * stylesheet languages like CSS, SASS etc.) and outputs it according to options
 * provided in config
 */
function stylesheet(abbr, config) {
    return css(parse(abbr, config), config);
}

exports.CSSAbbreviationScope = CSSAbbreviationScope;
exports.default = expandAbbreviation;
exports.extract = extractAbbreviation;
exports.markup = markup;
exports.markupAbbreviation = parseAbbreviation;
exports.parseMarkup = parse$1;
exports.parseStylesheet = parse;
exports.parseStylesheetSnippets = convertSnippets;
exports.resolveConfig = resolveConfig;
exports.stringifyMarkup = stringify;
exports.stringifyStylesheet = css;
exports.stylesheet = stylesheet;
exports.stylesheetAbbreviation = parse$2;
//# sourceMappingURL=emmet.cjs.map