What is the connection between tsconfig.json and typings.json files?

I recently acquired a .NET MVC sample application that came with Angular2-final. Within the project, I noticed a typings.json file at the root and a tsconfig.json file in the ng2 app directory. What is the connection between these two files? Is this the most up-to-date way to configure TypeScript in Visual Studio? Do we really need typings.json, or can tsconfig.json handle everything it does? Below is the content of the tsconfig.json file:

{
  "compilerOptions": {
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "module": "commonjs",
    "noEmitOnError": true,
    "noImplicitAny": false,
    "outDir": "../Scripts/",
    "removeComments": false,
    "sourceMap": true,
    "target": "es5",
    "moduleResolution": "node"
  },
  "exclude": [
    "node_modules",
    "typings/index",
    "typings/index.d.ts"
  ]
}

And here's what's inside the typings.json file:

{
  "globalDependencies": {
    "core-js": "registry:dt/core-js#0.0.0+20160725163759",
    "jasmine": "registry:dt/jasmine#2.2.0+20160621224255",
    "node": "registry:dt/node#6.0.0+20160909174046"
  }
}

Answer №1

Manage type definitions in TypeScript with Typings, a dedicated manager: https://github.com/typings/typings

Similar to how npm uses package.json, Typings utilizes typings.json to store necessary type definitions for the project.

The tsconfig.json file serves as the configuration file for TypeScript and holds settings for the TypeScript compiler.

If preferred, utilize the @types organization on npmjs.org to access type definitions by running the following npm command:

npm install --save-dev @types/<module name>

After installation, include the following snippet in your tsconfig.json:

  "typeRoots": [
    "../node_modules/@types"
  ]

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