Function directoryExists

packages/compiler-cli/src/ngtsc/resource/src/loader.ts:265–275

(directoryName: string)

): RequiredDelegations<ts.ModuleResolutionHost> {
  return {
    directoryExists(directoryName: string): boolean {
      if (directoryName.includes(RESOURCE_MARKER)) {
        return false;
      } else if (adapter.directoryExists !== undefined) {
        return adapter.directoryExists(directoryName);
      } else {
        // TypeScript's module resolution logic assumes that the directory exists when no host
        // implementation is available.
        return true;
      }
    },
    fileExists(fileName: string): boolean {
      if (fileName.includes(RESOURCE_MARKER)) {
        return false;