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// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.// Copyright Joyent, Inc. and other Node contributors.
// deno-lint-ignore-file no-inner-declarations
import { core } from "./_core.ts";import { validateFunction } from "./internal/validators.mjs";import { _exiting } from "./_process/exiting.ts";import { FixedQueue } from "./internal/fixed_queue.ts";
interface Tock {  callback: (...args: Array<unknown>) => void;  args: Array<unknown>;}
const queue = new FixedQueue();
// deno-lint-ignore no-explicit-anylet _nextTick: any;
export function processTicksAndRejections() {  let tock;  do {    // deno-lint-ignore no-cond-assign    while (tock = queue.shift()) {      // FIXME(bartlomieju): Deno currently doesn't support async hooks      // const asyncId = tock[async_id_symbol];      // emitBefore(asyncId, tock[trigger_async_id_symbol], tock);
      try {        const callback = (tock as Tock).callback;        if ((tock as Tock).args === undefined) {          callback();        } else {          const args = (tock as Tock).args;          switch (args.length) {            case 1:              callback(args[0]);              break;            case 2:              callback(args[0], args[1]);              break;            case 3:              callback(args[0], args[1], args[2]);              break;            case 4:              callback(args[0], args[1], args[2], args[3]);              break;            default:              callback(...args);          }        }      } finally {        // FIXME(bartlomieju): Deno currently doesn't support async hooks        // if (destroyHooksExist())        // emitDestroy(asyncId);      }
      // FIXME(bartlomieju): Deno currently doesn't support async hooks      // emitAfter(asyncId);    }    core.runMicrotasks();    // FIXME(bartlomieju): Deno currently doesn't unhandled rejections    // } while (!queue.isEmpty() || processPromiseRejections());  } while (!queue.isEmpty());  core.setHasTickScheduled(false);  // FIXME(bartlomieju): Deno currently doesn't unhandled rejections  // setHasRejectionToWarn(false);}
if (typeof core.setNextTickCallback !== "undefined") {  function runNextTicks() {    // FIXME(bartlomieju): Deno currently doesn't unhandled rejections    // if (!hasTickScheduled() && !hasRejectionToWarn())    //   runMicrotasks();    // if (!hasTickScheduled() && !hasRejectionToWarn())    //   return;    if (!core.hasTickScheduled()) {      core.runMicrotasks();    }    if (!core.hasTickScheduled()) {      return true;    }
    processTicksAndRejections();    return true;  }
  core.setNextTickCallback(processTicksAndRejections);  core.setMacrotaskCallback(runNextTicks);
  function __nextTickNative<T extends Array<unknown>>(    this: unknown,    callback: (...args: T) => void,    ...args: T  ) {    validateFunction(callback, "callback");
    if (_exiting) {      return;    }
    // TODO(bartlomieju): seems superfluous if we don't depend on `arguments`    let args_;    switch (args.length) {      case 0:        break;      case 1:        args_ = [args[0]];        break;      case 2:        args_ = [args[0], args[1]];        break;      case 3:        args_ = [args[0], args[1], args[2]];        break;      default:        args_ = new Array(args.length);        for (let i = 0; i < args.length; i++) {          args_[i] = args[i];        }    }
    if (queue.isEmpty()) {      core.setHasTickScheduled(true);    }    // FIXME(bartlomieju): Deno currently doesn't support async hooks    // const asyncId = newAsyncId();    // const triggerAsyncId = getDefaultTriggerAsyncId();    const tickObject = {      // FIXME(bartlomieju): Deno currently doesn't support async hooks      // [async_id_symbol]: asyncId,      // [trigger_async_id_symbol]: triggerAsyncId,      callback,      args: args_,    };    // FIXME(bartlomieju): Deno currently doesn't support async hooks    // if (initHooksExist())    //   emitInit(asyncId, 'TickObject', triggerAsyncId, tickObject);    queue.push(tickObject);  }  _nextTick = __nextTickNative;} else {  function __nextTickQueueMicrotask<T extends Array<unknown>>(    this: unknown,    callback: (...args: T) => void,    ...args: T  ) {    if (args) {      queueMicrotask(() => callback.call(this, ...args));    } else {      queueMicrotask(callback);    }  }
  _nextTick = __nextTickQueueMicrotask;}
// `nextTick()` will not enqueue any callback when the process is about to// exit since the callback would not have a chance to be executed.export function nextTick(this: unknown, callback: () => void): void;export function nextTick<T extends Array<unknown>>(  this: unknown,  callback: (...args: T) => void,  ...args: T): void;export function nextTick<T extends Array<unknown>>(  this: unknown,  callback: (...args: T) => void,  ...args: T) {  _nextTick(callback, ...args);}