js_worker_module/mozilla_docs.txt

The definitions of some interfaces implemented in jsapi/workers/worker.cpp are released under Mozilla license.

The definitions and functions of these interfaces are consistent with the standard interfaces under mozila license,
but the implementation of specific functions is independent and self-developed. 

All interfaces are described in d.ts, the following is the interface written in d.ts under to Mozilla license

export interface WorkerOptions {
  type?: "classic" | "module";
  name?: string;
  shared?: boolean;
}

export interface Event {
  readonly type: string;
  readonly timeStamp: number;
}

interface ErrorEvent extends Event {
  readonly message: string;
  readonly filename: string;
  readonly lineno: number;
  readonly colno: number;
  readonly error: Object;
}

declare interface MessageEvent<T = Object> extends Event {
  readonly data: T;
}

export interface PostMessageOptions {
  transfer?: Object[];
}

export interface EventListener {
  (evt: Event): void | Promise<void>;
}

type MessageType = "message" | "messageerror";

declare interface EventTarget {
  addEventListener(
    type: string,
    listener: EventListener
  ): void;
  dispatchEvent(event: Event): boolean;
  removeEventListener(
    type: string,
    callback?: EventListener
  ): void;
  removeAllListener(): void;
}

declare interface WorkerGlobalScope extends EventTarget {
  readonly name: string;
  onerror?: (ev: ErrorEvent) => void;
  readonly self: WorkerGlobalScope & typeof globalThis;
}

declare interface DedicatedWorkerGlobalScope extends WorkerGlobalScope {
  onmessage?: (this: DedicatedWorkerGlobalScope, ev: MessageEvent) => void;
  onmessageerror?: (this: DedicatedWorkerGlobalScope, ev: MessageEvent) => void;
  close(): void;
  postMessage(messageObject: Object, transfer: Transferable[]): void;
  postMessage(messageObject: Object, options?: PostMessageOptions): void;
}

declare namespace worker {
  class Worker extends EventTarget {
    constructor(scriptURL: string, options?: WorkerOptions);
    onexit?: (code: number) => void;
    onerror?: (err: ErrorEvent) => void;
    onmessage?: (event: MessageEvent) => void;
    onmessageerror?: (event: MessageEvent) => void;
    postMessage(message: Object, transfer: ArrayBuffer[]): void;
    postMessage(message: Object, options?: PostMessageOptions): void;
    terminate(): void;
  }
  const parentPort: DedicatedWorkerGlobalScope;
}