init source

node_modules/eslint-module-utils/parse.js

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+"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)
+
+  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
+}