queuejs

library1.0.0jsnpmunverified

A minimalistic queue data structure for Node.js, version 1.0.0, released under MIT license. It provides basic FIFO operations (enqueue, dequeue, peek, size) with no dependencies. Last updated in 2018, it is stable but unmaintained, suitable for simple queue needs without advanced features like concurrency, iterators, or TypeScript support.

testing

npm install queuejs

github ↗package ↗homepage ↗

INSTALL

IMPORT

SIG · QUEUEJS

queuejs

testingjavascriptv1.0.0

harness data pending

Install & Compatibility

Where this runs

No compatibility data collected yet for this library.

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

Queue

✓ const Queue = require('queuejs')

✗ import Queue from 'queuejs'

Package is CommonJS-only. ESM import (e.g., using import) will cause an error unless using a bundler that can handle CJS.

enq

✓ queue.enq(element)

✗ queue.enqueue(element)

The method is named enq, not enqueue. Common mistake to use the full word.

deq

✓ queue.deq()

✗ queue.dequeue()

The method is named deq, not dequeue. Throws Error when queue is empty.

peek

✓ queue.peek()

✗ queue.front() or queue.top()

Method is peek, not front/top. Throws Error if empty.

Creates a queue, enqueues two elements, demonstrates size, peek, and dequeue operations.

const Queue = require('queuejs'); const q = new Queue(); q.enq(10); q.enq(5); console.log(q.size()); // 2 console.log(q.peek()); // 10 console.log(q.deq()); // 10 console.log(q.size()); // 1

Debug

Known issues

gotchaMethod names are enq and deq, not enqueue/dequeue. Using wrong names will result in TypeError: queue.enqueue is not a function.

fix

Use enq() for enqueue and deq() for dequeue.

affects: >=1.0.0

gotchadeq() and peek() throw an Error when the queue is empty. Not handling this can crash the application.

fix

Check queue.isEmpty() before calling deq() or peek().

affects: >=1.0.0

gotchaPackage is CommonJS-only. Using ES6 import syntax (import Queue from 'queuejs') will fail unless your runtime supports require in ESM or you use a bundler.

fix

Use require('queuejs') or use a bundler that handles CommonJS.

affects: >=1.0.0

deprecatedPackage has not been updated since 2018. No TypeScript definitions, no iterator, no concurrency support.

fix

Consider modern alternatives like denque or double-ended-queue for better performance and features.

affects: >=1.0.0

Errors

Common errors & fixes

TypeError: queue.enqueue is not a function

Using method name enqueue instead of enq.

fix

queue.enq(element)

Error: Queue is empty

Calling deq() or peek() on an empty queue.

fix

Check isEmpty() before deq/peek: if (!queue.isEmpty()) queue.deq();

Upgrade

Version history

1.0.0latest on npm

Audit

Dependencies

No dependency data recorded yet.

Agent activity

4 hits · last 30 days

node

Resources

githubgit://github.com/janogonzalez/queuejs ↗

packagequeuejs ↗

homepagehttps://github.com/janogonzalez/queuejs ↗