有没有办法让 ESLint 在不添加 Babel 的情况下理解新的导入断言语法？

Question

Since the import assertion syntax (eg assert {type: 'json'} ) is mandatory in the latest Node.js versions, I'm looking for a way to be able to write this new syntax, but I don't want to add Babel just to be able to use the Babel ESLint parser which understands it.

Could this be added by a different ESLint plugin?

Answer 1

As of this writing, the Node.js core code itself is configured to use @babel/eslint-parser specifically for this . It is unlikely that there is an easy and reliable way to do it using a parser shipped with ESLint (at this time). As of this writing, the specification is Stage 3 . ESLint has a policy of only adding Stage 4 syntax. Additionally, Node.js docs and a runtime warning make it clear that this is an experimental API. Installing @babel/eslint-parser is the reasonable solution if you're using an experimental API.

Answer 2

You have to use the babel eslint parser for that

npm i -D @babel/eslint-parser @babel/plugin-syntax-import-assertions

then in.eslintrc

  "parser": "@babel/eslint-parser",
  "parserOptions": {
    "requireConfigFile": false,
    "babelOptions": {
      "plugins": [
        "@babel/plugin-syntax-import-assertions"
      ]
    }
  },