Function getProjectMainFile

src/cdk/schematics/utils/project-main-file.ts:15–30

(project: ProjectDefinition)

/** Looks for the main TypeScript file in the given project and returns its path. */
export function getProjectMainFile(project: ProjectDefinition): Path {
  const buildOptions = getProjectTargetOptions(project, 'build');

  // `browser` is for the `@angular-devkit/build-angular:application` builder while
  // `main` is for the `@angular-devkit/build-angular:browser` builder.
  const mainPath = (buildOptions['browser'] || buildOptions['main']) as Path | undefined;

  if (!mainPath) {
    throw new SchematicsException(
      `Could not find the project main file inside of the ` +
        `workspace config (${project.sourceRoot})`,
    );
  }

  return mainPath;
}