"Exploring the depths of Webpack's module

This is my first venture into creating an Angular 2 application within MVC Core, utilizing TypeScript 2.2, Angular2, and Webpack.

I have been closely following the Angular Documentation, but despite referencing the latest NPM Modules, I encounter errors when running Webpack:

ERROR in [at-loader]
    TS2688: Cannot find type definition file for 'node'.
ERROR in [at-loader] ./src/app/app.component.ts:6:15 
    TS2304: Cannot find name 'require'.
ERROR in [at-loader] ./src/app/app.component.ts:7:14 
    TS2304: Cannot find name 'require'.
ERROR in [at-loader] ./src/main.ts:5:5 
    TS2304: Cannot find name 'process'.
ERROR in [at-loader] ./src/polyfills.ts:3:1 
    TS2304: Cannot find name 'require'.
ERROR in [at-loader] ./src/polyfills.ts:5:5 
    TS2304: Cannot find name 'process'.
ERROR in [at-loader] ./src/polyfills.ts:10:5 
    TS2304: Cannot find name 'require'.

The initial error seems to be the most significant one. After some investigation, I made changes by adding types and typeRoots to my tsconfig.json:


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

Unfortunately, this did not solve the issue. Here is a snippet from my package.json file for reference:

... (excerpt continues)

All other files adhere to the instructions provided in the Angular documentation.

Your assistance with resolving this would be greatly appreciated.

Update

By reverting

<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="0e7a777e6b7d6d7c677e7a4e3c203c203f">[email protected]</a>
back to its earlier form
<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="ef9b969f8a9c8c9d869f9bafddc1dfc1dedf">[email protected]</a>
, the project successfully builds without any errors via Webpack. It appears that the problem could stem from either:

  1. A shift in how TypeScript requires configuration or...
  2. An alteration in the syntax of user code between versions 2.0 and 2.2

I am surprised that there aren't more individuals encountering this issue. However, it's likely they possess greater knowledge of Webpack and TypeScript than myself!

Answer №1

After investigating further, I discovered that the issue was not related to TypeScript, but rather a mistake in the user configuration!

I identified the error in my tsconfig.json file:

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

The correct setting should be:

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

This correction was necessary because the tsconfig.json file is located in `/src' - a simple oversight on my part!

I apologize for any inconvenience caused by this misunderstanding.

Answer №2

I encountered a similar problem where I could not update to typescript 2.2.1, as the last version that worked for me was 2.0.10.

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