This is small patch to the great rule:
file-extension-in-import
from eslint-plugin-node module.
Author of code:
I've just added mapping functionality.
When we use type module we must add extension to the file
import foo from "./path/to/a/file"It's a bad practice
import eslint from "eslint"
import foo from "./path/to/a/file.js"It's a good practice.
node/file-extension-in-import rule raise error when we forgot to add extension to the import. But it doesn't work with Typescript.
When we use Typescript we can't add .ts extension to the file. It won't be process with Typescript compiler. In this case we need to add .js extension.
In this case we need to replace .ts extension to .js.
In this plugin I will add possibility to make mapping for extensions:
'file-extension-in-import-ts/file-extension-in-import-ts': [
'error',
'always',
{ extMapping: {'.ts': '.js' } }
]It means, this rule will fix our ts files to .js extension in import statement.
import module from './my-module';will be changed to:
import module from './my-module/index.js';- Install the package:
npm i -D eslint-plugin-file-extension-in-import-ts- Add to .eslintrc.js:
{
"plugins": [
"file-extension-in-import-ts"
],
"rules": {
"file-extension-in-import-ts/file-extension-in-import-ts": "error"
}
}By default, the plugin will process mapping:
- .ts -> .js
- .tsx -> .js
This plugin has conflict with eslint-import-plugin, the rule: import/no-unresolved rule
To quick fix it we can skip '.js' (in the folder with TS sources JS files are not existing).
'import/no-unresolved': ['error', { ignore: [ '\\.js$' ] }],Copyright (c)
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