100 lines
1.9 KiB
Plaintext
100 lines
1.9 KiB
Plaintext
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/** @type {Record<string, string>} */
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export const escaped = {
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'<': '\\u003C',
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'\\': '\\\\',
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'\b': '\\b',
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'\f': '\\f',
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'\n': '\\n',
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'\r': '\\r',
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'\t': '\\t',
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'\u2028': '\\u2028',
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'\u2029': '\\u2029'
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};
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export class DevalueError extends Error {
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/**
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* @param {string} message
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* @param {string[]} keys
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*/
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constructor(message, keys) {
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super(message);
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this.name = 'DevalueError';
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this.path = keys.join('');
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}
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}
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/** @param {any} thing */
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export function is_primitive(thing) {
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return Object(thing) !== thing;
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}
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const object_proto_names = /* @__PURE__ */ Object.getOwnPropertyNames(
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Object.prototype
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)
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.sort()
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.join('\0');
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/** @param {any} thing */
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export function is_plain_object(thing) {
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const proto = Object.getPrototypeOf(thing);
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return (
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proto === Object.prototype ||
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proto === null ||
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Object.getOwnPropertyNames(proto).sort().join('\0') === object_proto_names
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);
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}
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/** @param {any} thing */
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export function get_type(thing) {
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return Object.prototype.toString.call(thing).slice(8, -1);
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}
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/** @param {string} char */
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function get_escaped_char(char) {
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switch (char) {
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case '"':
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return '\\"';
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case '<':
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return '\\u003C';
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case '\\':
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return '\\\\';
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case '\n':
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return '\\n';
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case '\r':
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return '\\r';
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case '\t':
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return '\\t';
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case '\b':
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return '\\b';
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case '\f':
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return '\\f';
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case '\u2028':
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return '\\u2028';
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case '\u2029':
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return '\\u2029';
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default:
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return char < ' '
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? `\\u${char.charCodeAt(0).toString(16).padStart(4, '0')}`
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: '';
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}
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}
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/** @param {string} str */
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export function stringify_string(str) {
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let result = '';
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let last_pos = 0;
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const len = str.length;
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for (let i = 0; i < len; i += 1) {
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const char = str[i];
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const replacement = get_escaped_char(char);
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if (replacement) {
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result += str.slice(last_pos, i) + replacement;
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last_pos = i + 1;
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}
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}
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return `"${last_pos === 0 ? str : result + str.slice(last_pos)}"`;
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}
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