83 lines
2.7 KiB
JavaScript
83 lines
2.7 KiB
JavaScript
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'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 log = require('debug')('eslint-plugin-import:parse')
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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/benmosher/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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ast = parser.parseForESLint(content, parserOptions).ast
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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 ast
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}
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}
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return parser.parse(content, parserOptions)
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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 (let 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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