eslint-multiple-parsers

Use multiple parsers in one ESLint run.

DEPRECATION NOTICE

Superseded by ESLint configuration based on glob patterns.

What

ESLint can currently have configured only a single parser. If your code has multiple languages and thus requires multiple parsers, you’re out of luck.
Or, are you?

Usage

Install this package:

npm i --save-dev eslint-multiple-parsers

Specify this package as the parser and configure the multiple parsers like so:
.eslintrc.json:

{
  "parser": "eslint-multiple-parsers",
  "parserOptions": {
    "parsers": [
      {
        "test": ".*\\.js$",
        "path": "babel-eslint",
        "options": {
          "sourceType": "module"
        }
      },
      {
        "test": ".*\\.ts$",
        "path": "typescript-eslint-parser"
      }
    ]
  }
}

The test is a regular expression. It will be matched against the basename of the file path. The first matched parser will be used.
Of course, any specified parsers must be installed.
Notice: the parser path must be a package path. A relative path will not work. PR welcome.