Excluding unnecessary TypeScript files in Angular 9

After upgrading from Angular 7 to Angular 9, I am encountering numerous errors like the one below.

WARNING in C:\Users\DEV-SYS\Documents\GitHub\Angular-7\src\environments\environment.prod.ts is part of the TypeScript compilation but it's unused. Add only entry points to the 'files' or 'include' properties in your tsconfig.

I could delete the file to eliminate the errors, but I might need it later. How can I instruct the system not to compile it? I attempted adding the following to my tsconfig.app.json without success.

  "exclude": [
        "test.ts",
        "**/*.spec.ts",
        "environment.prod.ts"
    ]

What am I overlooking here?

angulartypescript

Answer №1

If your environment.prod.ts file is located within nested folders, you will need to specify the path like this:

 "exclude": [
        "test.ts",
        "**/*.spec.ts",
        "./src/environments/environment.prod.ts"
    ]

The path you provided for excluding the environment.prod.ts file is incorrect.

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