Error in Angular compiler-cli: The namespace 'ts' does not contain the exported member 'ResolutionMode'

Currently working on a web application using Angular 16 in Webstorm. The application is still in the pre-release stage, with only minimal functionality completed so far. While editing with ng serve running to test changes as they were made, encountered an error where the compiler halted and emitted the following message:

Error: node_modules/@angular/compiler-cli/src/ngtsc/program_driver/src/ts_create_program_driver.d.ts:37:247 - error TS2694: Namespace 'ts' has no exported member 'ResolutionMode'.

37     resolveTypeReferenceDirectives: ((typeReferenceDirectiveNames: string[] | readonly ts.FileReference[], containingFile: string, redirectedReference: ts.ResolvedProjectReference | undefined, options: ts.CompilerOptions, contain
ingFileMode?: ts.ResolutionMode) => (ts.ResolvedTypeReferenceDirective | undefined)[]) | undefined;

Tried the following solutions:

  • Removing all changes related to the ongoing task (dismissed a modal dialog), including service calls to API
  • Updated TypeScript to the latest version
  • Ensured all Angular packages are of the same version
  • Deleted node_modules and reinstalled by running npm install
  • Cloned the repository to a new machine and attempted to build it there but encountered the same issue, ruling out any environmental factors

Link to GitHub repository showcasing the problem.

Has anyone experienced a situation where Angular fails to recognize a base TypeScript member? Despite locating ResolutionMode in typescript.d.ts, the issue persists.

Answer №1

Well, it turns out that updating typescript was the solution to my issue. I'm not sure what I was doing wrong before when I thought I was updating typescript, or why it took compiler-cli so long to throw an error.

I had actually been running Typescript 4.9.4 all along. However, according to update.angular.io, versions above 4.9.3 are required. It seems like this information is not entirely accurate. Nevertheless, updating Typescript resolved the issue for me.

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