// `nextTick()` will not enqueue any callback when the process is about to
// exit since the callback would not have a chance to be executed.
function nextTick(callback) {
if (typeof callback !== 'function')
throw new ERR_INVALID_CALLBACK(callback);
if (process._exiting)
return;
var args;
switch (arguments.length) {
case 1: break;
case 2: args = [arguments[1]]; break;
case 3: args = [arguments[1], arguments[2]]; break;
case 4: args = [arguments[1], arguments[2], arguments[3]]; break;
default:
args = new Array(arguments.length - 1);
for (var i = 1; i < arguments.length; i++)
args[i - 1] = arguments[i];
}
if (queue.isEmpty())
setHasTickScheduled(true);
queue.push(new TickObject(callback, args, getDefaultTriggerAsyncId()));
}
// Flags: --expose-internals
'use strict';
require('../common');
const assert = require('assert');
const FixedQueue = require('internal/fixed_queue');
{
const queue = new FixedQueue();
assert.strictEqual(queue.head, queue.tail);
assert(queue.isEmpty());
queue.push('a');
assert(!queue.isEmpty());
assert.strictEqual(queue.shift(), 'a');
assert.strictEqual(queue.shift(), null);
}
{
const queue = new FixedQueue();
for (let i = 0; i < 2047; i++)
queue.push('a');
assert(queue.head.isFull());
queue.push('a');
assert(!queue.head.isFull());
assert.notStrictEqual(queue.head, queue.tail);
for (let i = 0; i < 2047; i++)
assert.strictEqual(queue.shift(), 'a');
assert.strictEqual(queue.head, queue.tail);
assert(!queue.isEmpty());