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