Missing types in compiler-cli

Which @angular/* package(s) are the source of the bug?

compiler-cli

Is this a regression?

Yes

Description

When using @ngtools/webpack which uses @angular/compiler-cli typescript cannot build project when skipLibCheck is set to false.

Given errors are reported by typescript:

node_modules/@angular/compiler-cli/src/ngtsc/diagnostics/index.d.ts:10:10 - error TS2305: Module '"@angular/compiler-cli/src/ngtsc/diagnostics/src/error_code"' has no exported member 'COMPILER_ERRORS_WITH_GUIDES'.

10 export { COMPILER_ERRORS_WITH_GUIDES, ERROR_DETAILS_PAGE_BASE_URL, ErrorCode, ngErrorCode } from './src/error_code';
            ~~~~~~~~~~~~~~~~~~~~~~~~~~~

node_modules/@angular/compiler-cli/src/ngtsc/diagnostics/index.d.ts:10:39 - error TS2305: Module '"@angular/compiler-cli/src/ngtsc/diagnostics/src/error_code"' has no exported member 'ERROR_DETAILS_PAGE_BASE_URL'.

10 export { COMPILER_ERRORS_WITH_GUIDES, ERROR_DETAILS_PAGE_BASE_URL, ErrorCode, ngErrorCode } from './src/error_code';
                                         ~~~~~~~~~~~~~~~~~~~~~~~~~~~

node_modules/@angular/compiler-cli/src/ngtsc/diagnostics/index.d.ts:10:79 - error TS2724: '"@angular/compiler-cli/src/ngtsc/diagnostics/src/error_code"' has no exported member named 'ngErrorCode'. Did you mean 'ErrorCode'?

10 export { COMPILER_ERRORS_WITH_GUIDES, ERROR_DETAILS_PAGE_BASE_URL, ErrorCode, ngErrorCode } from './src/error_code';
                                                                                 ~~~~~~~~~~~

  node_modules/@angular/compiler-cli/src/ngtsc/diagnostics/src/error_code.d.ts:12:21
    12 export declare enum ErrorCode {
                           ~~~~~~~~~
    'ErrorCode' is declared here.

This error did not occur in previous version (12.1) and started to occur in 12.2

When i set skipLibCheck to true then it starts working, but we would like to keep checking libs.

Please provide a link to a minimal reproduction of the bug

No response

Please provide the exception or error you saw

Errors described in description

Please provide the environment you discovered this bug in

Angular: 12.2.0

Anything else?

No response

[CC84]

I had the same issue after updating from 11 to 12. I commented out the whole project and it worked. Then tried step by step to comment everything in. I finally found this import: import {Environment} from “@angular/compiler-cli/src/ngtsc/typecheck/src/environment”;

For sure, i never added this one, it must have beend added by Webstorm. Removing this line fixed it.

[jerone]

Same issue. I don’t need any of the highlighted exports.

Using skipLibCheck: true in ‘tsconfig.json’ suppresses the issue, but a real fix is of course needed.