Method findAngularCore

vscode-ng-language-service/server/src/session.ts:763–783

* Find the main declaration file for `@angular/core` in the specified * `project`. * * @returns main declaration file in `@angular/core`.

(project: ts.server.Project)

   * @returns main declaration file in `@angular/core`.
   */
  private findAngularCore(project: ts.server.Project): string | null {
    const projectName = project.getProjectName();
    if (!project.languageServiceEnabled) {
      this.info(
        `Language service is already disabled for ${projectName}. ` +
          `This could be due to non-TS files that exceeded the size limit (${ts.server.maxProgramSizeForNonTsFiles} bytes).` +
          `Please check log file for details.`,
      );
      return null;
    }
    if (!project.hasRoots() || project.isNonTsProject()) {
      return null;
    }
    const angularCore = project.getFileNames().find(isAngularCore);
    if (angularCore === undefined && project.getExcludedFiles().some(isAngularCore)) {
      this.info(
        `Please check your tsconfig.json to make sure 'node_modules' directory is not excluded.`,
      );
    }
    return angularCore ?? null;
  }
}

function isTypeScriptFile(path: string): boolean {