Searching for TypeScript type definitions for the @Angular libraries within Angular 2

After updating my application to Angular2 v2.0.0-rc.1, I am encountering TypeScript compile errors and warnings when webpack bundles my application. These messages appear for any @angular packages referenced in my TypeScript source files:

ERROR in ./src/app/app.ts
(1,34): error TS2307: Cannot find module '@angular/core'.

ERROR in ./src/app/app.ts
(3,76): error TS2307: Cannot find module '@angular/common'.

ERROR in ./src/app/app.ts
(4,30): error TS2307: Cannot find module '@angular/http'.

In previous beta versions of Angular2, I resolved similar issues with classes like Promise and Map by including a reference at the beginning of my app.ts file.

///<reference path="node_modules/angular2/typings/browser.d.ts"/>

I am wondering if there is a d.ts file available for the @angular packages that can resolve this issue. So far, my search within the typings system has yielded no results:

MFO-Mac:angular2-oauth2 mfo$ typings search '@angular'
No results found for search

Currently, my TypeScript tsconfig.json file is set to target ES6. However, switching it to target ES5 eliminates the @angular errors but introduces errors for common ES6 classes such as Promise, Set, and Map. Here is my configuration for ES6:

{
  "version": "1.6.2",
  "compilerOptions": {
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "target": "es6",
    "module": "commonjs",
    "removeComments": true,
    "sourceMap": true
  },
  "exclude": [
    "node_modules",
    "bower_components",
    "bootstrap"
  ],
  "files": [],
  "definitions": [
  ]
}

I suspect that listing files in node_modules/@angular under the definitions section of the tsconfig.json file could potentially solve the issue, but I lack sufficient knowledge on how TypeScript typedef files function.

If there is an alternative solution to address this problem, I am open to exploring other options as well.

Answer №1

It appears that the TypeScript compiler can automatically detect definition files on its own if you specify that you are using Node/NPM style modules.

After I added "moduleResolution": "node", to my tsconfig.json configuration file, the error messages disappeared and the application functioned as intended.

Here is my updated file (new addition found in the 4th line):

{
  "version": "1.6.2",
  "compilerOptions": {
    "moduleResolution": "node",
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "target": "es6",
    "module": "commonjs",
    "removeComments": true,
    "sourceMap": true
  },
  "exclude": [
    "node_modules",
    "bower_components",
    "bootstrap"
  ],
  "files": [],
  "definitions": []
}

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