128 lines
4 KiB
JavaScript
Executable file
128 lines
4 KiB
JavaScript
Executable file
'use strict';
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exports.__esModule = true;
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const moduleRequire = require('./module-require').default;
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const extname = require('path').extname;
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const fs = require('fs');
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const log = require('debug')('eslint-plugin-import:parse');
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function getBabelVisitorKeys(parserPath) {
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if (parserPath.endsWith('index.js')) {
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const hypotheticalLocation = parserPath.replace('index.js', 'visitor-keys.js');
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if (fs.existsSync(hypotheticalLocation)) {
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const keys = moduleRequire(hypotheticalLocation);
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return keys.default || keys;
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}
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} else if (parserPath.endsWith('index.cjs')) {
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const hypotheticalLocation = parserPath.replace('index.cjs', 'worker/ast-info.cjs');
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if (fs.existsSync(hypotheticalLocation)) {
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const astInfo = moduleRequire(hypotheticalLocation);
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return astInfo.getVisitorKeys();
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}
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}
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return null;
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}
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function keysFromParser(parserPath, parserInstance, parsedResult) {
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if (/.*espree.*/.test(parserPath)) {
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return parserInstance.VisitorKeys;
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}
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if (/.*(babel-eslint|@babel\/eslint-parser).*/.test(parserPath)) {
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return getBabelVisitorKeys(parserPath);
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}
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if (/.*@typescript-eslint\/parser/.test(parserPath)) {
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if (parsedResult) {
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return parsedResult.visitorKeys;
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}
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}
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return null;
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}
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exports.default = function parse(path, content, context) {
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if (context == null) throw new Error('need context to parse properly');
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let parserOptions = context.parserOptions;
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const parserPath = getParserPath(path, context);
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if (!parserPath) throw new Error('parserPath is required!');
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// hack: espree blows up with frozen options
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parserOptions = Object.assign({}, parserOptions);
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parserOptions.ecmaFeatures = Object.assign({}, parserOptions.ecmaFeatures);
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// always include comments and tokens (for doc parsing)
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parserOptions.comment = true;
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parserOptions.attachComment = true; // keeping this for backward-compat with older parsers
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parserOptions.tokens = true;
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// attach node locations
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parserOptions.loc = true;
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parserOptions.range = true;
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// provide the `filePath` like eslint itself does, in `parserOptions`
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// https://github.com/eslint/eslint/blob/3ec436ee/lib/linter.js#L637
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parserOptions.filePath = path;
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// @typescript-eslint/parser will parse the entire project with typechecking if you provide
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// "project" or "projects" in parserOptions. Removing these options means the parser will
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// only parse one file in isolate mode, which is much, much faster.
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// https://github.com/import-js/eslint-plugin-import/issues/1408#issuecomment-509298962
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delete parserOptions.project;
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delete parserOptions.projects;
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// require the parser relative to the main module (i.e., ESLint)
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const parser = moduleRequire(parserPath);
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if (typeof parser.parseForESLint === 'function') {
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let ast;
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try {
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const parserRaw = parser.parseForESLint(content, parserOptions);
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ast = parserRaw.ast;
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return {
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ast,
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visitorKeys: keysFromParser(parserPath, parser, parserRaw),
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};
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} catch (e) {
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console.warn();
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console.warn('Error while parsing ' + parserOptions.filePath);
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console.warn('Line ' + e.lineNumber + ', column ' + e.column + ': ' + e.message);
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}
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if (!ast || typeof ast !== 'object') {
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console.warn(
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'`parseForESLint` from parser `' +
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parserPath +
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'` is invalid and will just be ignored'
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);
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} else {
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return {
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ast,
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visitorKeys: keysFromParser(parserPath, parser, undefined),
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};
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}
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}
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const keys = keysFromParser(parserPath, parser, undefined);
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return {
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ast: parser.parse(content, parserOptions),
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visitorKeys: keys,
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};
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};
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function getParserPath(path, context) {
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const parsers = context.settings['import/parsers'];
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if (parsers != null) {
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const extension = extname(path);
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for (const parserPath in parsers) {
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if (parsers[parserPath].indexOf(extension) > -1) {
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// use this alternate parser
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log('using alt parser:', parserPath);
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return parserPath;
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}
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}
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}
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// default to use ESLint parser
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return context.parserPath;
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}
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