147 lines
6.5 KiB
Plaintext
147 lines
6.5 KiB
Plaintext
"use strict";
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var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
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if (k2 === undefined) k2 = k;
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var desc = Object.getOwnPropertyDescriptor(m, k);
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if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
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desc = { enumerable: true, get: function() { return m[k]; } };
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}
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Object.defineProperty(o, k2, desc);
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}) : (function(o, m, k, k2) {
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if (k2 === undefined) k2 = k;
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o[k2] = m[k];
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}));
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var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
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Object.defineProperty(o, "default", { enumerable: true, value: v });
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}) : function(o, v) {
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o["default"] = v;
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});
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var __importStar = (this && this.__importStar) || function (mod) {
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if (mod && mod.__esModule) return mod;
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var result = {};
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if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
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__setModuleDefault(result, mod);
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return result;
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};
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Object.defineProperty(exports, "__esModule", { value: true });
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const utils_1 = require("@typescript-eslint/utils");
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const tsutils = __importStar(require("ts-api-utils"));
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const ts = __importStar(require("typescript"));
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const util_1 = require("../util");
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exports.default = (0, util_1.createRule)({
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name: 'no-unnecessary-qualifier',
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meta: {
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docs: {
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description: 'Disallow unnecessary namespace qualifiers',
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requiresTypeChecking: true,
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},
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fixable: 'code',
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messages: {
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unnecessaryQualifier: "Qualifier is unnecessary since '{{ name }}' is in scope.",
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},
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schema: [],
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type: 'suggestion',
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},
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defaultOptions: [],
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create(context) {
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const namespacesInScope = [];
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let currentFailedNamespaceExpression = null;
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const services = (0, util_1.getParserServices)(context);
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const esTreeNodeToTSNodeMap = services.esTreeNodeToTSNodeMap;
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const checker = services.program.getTypeChecker();
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function tryGetAliasedSymbol(symbol, checker) {
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return tsutils.isSymbolFlagSet(symbol, ts.SymbolFlags.Alias)
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? checker.getAliasedSymbol(symbol)
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: null;
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}
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function symbolIsNamespaceInScope(symbol) {
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const symbolDeclarations = symbol.getDeclarations() ?? [];
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if (symbolDeclarations.some(decl => namespacesInScope.some(ns => ns === decl))) {
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return true;
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}
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const alias = tryGetAliasedSymbol(symbol, checker);
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return alias != null && symbolIsNamespaceInScope(alias);
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}
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function getSymbolInScope(node, flags, name) {
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const scope = checker.getSymbolsInScope(node, flags);
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return scope.find(scopeSymbol => scopeSymbol.name === name);
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}
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function symbolsAreEqual(accessed, inScope) {
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return accessed === checker.getExportSymbolOfSymbol(inScope);
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}
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function qualifierIsUnnecessary(qualifier, name) {
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const namespaceSymbol = services.getSymbolAtLocation(qualifier);
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if (namespaceSymbol === undefined ||
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!symbolIsNamespaceInScope(namespaceSymbol)) {
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return false;
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}
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const accessedSymbol = services.getSymbolAtLocation(name);
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if (accessedSymbol === undefined) {
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return false;
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}
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// If the symbol in scope is different, the qualifier is necessary.
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const tsQualifier = esTreeNodeToTSNodeMap.get(qualifier);
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const fromScope = getSymbolInScope(tsQualifier, accessedSymbol.flags, context.sourceCode.getText(name));
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return (fromScope === undefined || symbolsAreEqual(accessedSymbol, fromScope));
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}
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function visitNamespaceAccess(node, qualifier, name) {
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// Only look for nested qualifier errors if we didn't already fail on the outer qualifier.
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if (!currentFailedNamespaceExpression &&
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qualifierIsUnnecessary(qualifier, name)) {
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currentFailedNamespaceExpression = node;
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context.report({
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node: qualifier,
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messageId: 'unnecessaryQualifier',
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data: {
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name: context.sourceCode.getText(name),
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},
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fix(fixer) {
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return fixer.removeRange([qualifier.range[0], name.range[0]]);
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},
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});
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}
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}
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function enterDeclaration(node) {
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namespacesInScope.push(esTreeNodeToTSNodeMap.get(node));
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}
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function exitDeclaration() {
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namespacesInScope.pop();
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}
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function resetCurrentNamespaceExpression(node) {
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if (node === currentFailedNamespaceExpression) {
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currentFailedNamespaceExpression = null;
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}
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}
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function isPropertyAccessExpression(node) {
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return node.type === utils_1.AST_NODE_TYPES.MemberExpression && !node.computed;
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}
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function isEntityNameExpression(node) {
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return (node.type === utils_1.AST_NODE_TYPES.Identifier ||
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(isPropertyAccessExpression(node) &&
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isEntityNameExpression(node.object)));
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}
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return {
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'TSModuleDeclaration > TSModuleBlock'(node) {
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enterDeclaration(node.parent);
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},
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TSEnumDeclaration: enterDeclaration,
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'ExportNamedDeclaration[declaration.type="TSModuleDeclaration"]': enterDeclaration,
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'ExportNamedDeclaration[declaration.type="TSEnumDeclaration"]': enterDeclaration,
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'TSModuleDeclaration:exit': exitDeclaration,
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'TSEnumDeclaration:exit': exitDeclaration,
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'ExportNamedDeclaration[declaration.type="TSModuleDeclaration"]:exit': exitDeclaration,
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'ExportNamedDeclaration[declaration.type="TSEnumDeclaration"]:exit': exitDeclaration,
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TSQualifiedName(node) {
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visitNamespaceAccess(node, node.left, node.right);
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},
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'MemberExpression[computed=false]': function (node) {
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const property = node.property;
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if (isEntityNameExpression(node.object)) {
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visitNamespaceAccess(node, node.object, property);
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}
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},
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'TSQualifiedName:exit': resetCurrentNamespaceExpression,
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'MemberExpression:exit': resetCurrentNamespaceExpression,
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};
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},
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});
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//# sourceMappingURL=no-unnecessary-qualifier.js.map |