[Issue] Data path '' should NOT have additional properties (es5BrowserSupport) with `10.0.0` only

Describe the Bug

I have this error:

Data path '' should NOT have additional properties (es5BrowserSupport)

When serving my Angular 10 application. This is only an issue with the version 10.0.0 of @angular-builders/custom-webpack dependency. Installing the version 9.2.0 of @angular-builders/custom-webpack fix the error.

Expected Behavior

No error and the app start running.

Environment

Libs
- @angular/core version: 10.0.8
- @angular-devkit/build-angular version: 0.1000.5
- @angular-builders/custom-webpack version: 9.2.0

I do not know if you are aware of this error and if not let me know if you need more information about my project.

[guitarooman14]

What I’ve found in documentation:

Thus, if you use @angular-builders/custom-webpack:dev-server along with @angular-builders/custom-webpack:browser, ng serve will run with custom configuration provided in the latter.

Example angular.json:

"architect": {
  ...
  "build": {
    "builder": "@angular-builders/custom-webpack:browser",
    "options": {
      "customWebpackConfig": {
         "path": "./extra-webpack.config.js"
      },
      ...
    }
  },
  "serve": {
    "builder": "@angular-builders/custom-webpack:dev-server",
    "options": {
      "browserTarget": "my-project:build"
    }
  }

[szywi]

For those struggling with Data path "" should NOT have additional properties(customWebpackConfig).:

Make sure you configure customWebpackConfig with @angular-builders/custom-webpack:browser (and not @angular-builders/custom-webpack:dev-server).

See: custom-webpack-dev-server for more.