Class Client

packages/babel-register/src/worker-client.ts:8–41

import { markInRegisterWorker } from "./is-in-register-worker.ts";

class Client implements IClient {
  #send;

  constructor(send: (action: ACTIONS, payload: any) => any) {
    this.#send = send;
  }

  #eCache: string[] | undefined;
  getDefaultExtensions(): string[] {
    return (this.#eCache ??= this.#send(
      ACTIONS.GET_DEFAULT_EXTENSIONS,
      undefined,
    ));
  }

  setOptions(options: Options): void {
    return this.#send(ACTIONS.SET_OPTIONS, options);
  }

  transform(
    code: string,
    filename: string,
  ): { code: string; map: object } | null {
    return this.#send(ACTIONS.TRANSFORM, { code, filename });
  }

  isFileIgnored(filename: string): boolean {
    return this.#send(ACTIONS.IS_FILE_IGNORED, filename);
  }

  close() {
    this.#send(ACTIONS.CLOSE, undefined);
  }
}

// We need to run Babel in a worker because require hooks must
// run synchronously, but many steps of Babel's config loading