Class FakeFileSystemAPI

adev/shared-docs/testing/testing-helper.ts:109–174

}

class FakeFileSystemAPI implements FileSystemAPI {
  readdir(
    path: string,
    options: 'buffer' | {encoding: 'buffer'; withFileTypes?: false | undefined},
  ): Promise<Uint8Array[]>;
  readdir(
    path: string,
    options?:
      | string
      | {encoding?: string | null | undefined; withFileTypes?: false | undefined}
      | null
      | undefined,
  ): Promise<string[]>;
  readdir(
    path: string,
    options: {encoding: 'buffer'; withFileTypes: true},
  ): Promise<DirEnt<Uint8Array>[]>;
  readdir(
    path: string,
    options: {encoding?: string | null | undefined; withFileTypes: true},
  ): Promise<DirEnt<string>[]>;
  async readdir(
    path: unknown,
    options?: {encoding?: string | null | undefined; withFileTypes?: boolean} | string | null,
  ): Promise<Uint8Array[] | string[] | DirEnt<Uint8Array>[] | DirEnt<string>[]> {
    if (typeof options === 'object' && options?.withFileTypes === true) {
      return [{name: 'fake-file', isFile: () => true, isDirectory: () => false}];
    }

    return ['/fake-dirname'];
  }

  readFile(path: string, encoding?: null | undefined): Promise<Uint8Array>;
  readFile(path: string, encoding: string): Promise<string>;
  readFile(path: unknown, encoding?: unknown): Promise<Uint8Array> | Promise<string> {
    return Promise.resolve('fake file content');
  }
  async writeFile(
    path: string,
    data: string | Uint8Array,
    options?: string | {encoding?: string | null | undefined} | null | undefined,
  ): Promise<void> {}

  mkdir(path: string, options?: {recursive?: false | undefined} | undefined): Promise<void>;
  mkdir(path: string, options: {recursive: true}): Promise<string>;
  async mkdir(path: unknown, options?: unknown): Promise<void | string> {}

  async rm(
    path: string,
    options?: {force?: boolean | undefined; recursive?: boolean | undefined} | undefined,
  ): Promise<void> {}

  rename(oldPath: string, newPath: string): Promise<void> {
    throw Error('Not implemented');
  }

  watch(
    filename: string,