Resolving TS2304 error using Webpack 2 and Angular 2

I have been closely following the angular documentation regarding webpack 2 integration with angular 2. My code can be found on GitHub here, and it is configured using the webpack.dev.js setup.

When attempting to run the development build using npm start (specifically, 

webpack-dev-server --inline --progress --port 8080
), I encounter a series of TS2304 errors like the ones below:

ERROR in [at-loader] src\app\app.component.ts:5:15
    TS2304: Cannot find name 'require'.

ERROR in [at-loader] src\app\app.component.ts:6:14
    TS2304: Cannot find name 'require'.

What could be causing this issue?

angulartypescriptwebpackwebpack-dev-server

Answer №1

Ensure that you have successfully installed @types/node.

Next, add "types": ["jasmine","node"] to your tsconfig.json file in order to resolve this error.

I encountered the same issue and can confirm that this solution worked for me as well.

Here is an example of how your tsconfig.json should look:

{
  "compilerOptions": {
    "target": "es5",
    "module": "commonjs",
    "moduleResolution": "node",
    "sourceMap": true,
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "lib": ["es2015", "dom"],
    "noImplicitAny": true,
    "suppressImplicitAnyIndexErrors": true,
    "types": ["jasmine","node"]
  }
}

Make sure to also check your package.json file:

{
  "name": "webpackCreator",
  "version": "1.0.0",
  // Remaining content of your package.json...
}

Answer №2

Having trouble with Node.js? Make sure you have the necessary typings.

To add Node.js typings, run the command: npm install @types/node --save-dev

Answer №3

After encountering an issue, I made a small adjustment to my tsconfig.json file that resolved it for me:

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

The problem arose while working through the Angular 2 Webpack Intro tutorial (https://angular.io/docs/ts/latest/guide/webpack.html)

I noticed that the code provided in the guide's tsconfig.json differed from what was included in the 'final result' zip file (https://angular.io/resources/zips/webpack/webpack.zip)

Below is a snippet of my updated tsconfig.json file:

{
    "compilerOptions": {
        "target": "es5",
        "module": "commonjs",
        "moduleResolution": "node",
        "sourceMap": true,
        "emitDecoratorMetadata": true,
        "experimentalDecorators": true,
        "lib": [ "es2015", "dom" ],
        "noImplicitAny": true,
        "suppressImplicitAnyIndexErrors": true,
        "typeRoots": [ 
            "../node_modules/@types/"
        ]
    }
}

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