Recently I have found Visual Code has a nice feature for type checking in JavaScript files. All I have to do is to type on top of file // @ts-check, it is great benefit for me, so I want to use it globally on every JavaScript file, how could I could I do it without writing that line every time on top of a file?

Recently I have found Visual Code has a nice feature for type checking in JavaScript files. All I have to do is to type on top of file // @ts-check, it is great benefit for me, so I want to use it globally on every JavaScript file, how could I could I do it without writing that line every time on top of a file?

• javascript
• reactjs
• typescript
• eslint

• 1 I believe that errors e from typescript piler and not from eslint. To enable type checking in all js files add tsconfig.json file (if you don't have one) with checkJs piler option enabled – Aleksey L. Commented Nov 5, 2018 at 15:53

1 Answer 1

As per Aleksey L. ment I added to root directory tsconfig.json with this configuration and it works:

{
    "pilerOptions": {
        "module": "system",
        "noImplicitAny": false,
        "removeComments": true,
        "preserveConstEnums": true,
        "sourceMap": true,
        "outDir": "./dist",
        "rootDir": "./src",
        "checkJs": true,
        "allowJs": true,
        "jsx": "react",
        "experimentalDecorators": true,
        "moduleResolution": "node"
    },
    "include": [
        "src/**/*"
    ],
    "exclude": [
        "./node_modules",
        "dist"
    ]
}

also if you want to check it with npm script all you need is to install typescript and use this mand in scripts section:

"typecheck": "tsc --project tsconfig.json --noEmit"