dequeue

library1.0.5jsnpmunverified

A simple double-ended queue datastructure for Node.js, version 1.0.5 (last released in 2013). Provides O(1) push, pop, shift, and unshift operations, making it a drop-in replacement for JavaScript arrays used as FIFO queues. Avoids performance degradation seen with large arrays (100k+ entries) by using a linked list internally. Lightweight, no dependencies, and supports Node.js engines of all versions.

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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.

Package uses CommonJS; no ESM support. Default export is the constructor.

const Dequeue = require('dequeue')

Named import will fail; package does not export named symbols.

import Dequeue from 'dequeue'

module.exports is the constructor directly, not an object.

var Dequeue = require('dequeue').Dequeue

Creates a dequeue, adds elements with push and unshift, then removes from both ends using shift and pop.

const Dequeue = require('dequeue'); const fifo = new Dequeue(); fifo.push('first'); fifo.push('second'); fifo.unshift('zeroth'); console.log(fifo.length); // 3 console.log(fifo.shift()); // zeroth console.log(fifo.pop()); // second console.log(fifo.shift()); // first console.log(fifo.length); // 0

Debug

Known footguns

gotchaNo TypeScript typings available; manual type definitions required for TS projects.

gotchaPackage uses CommonJS; not compatible with ES module import syntax in Node.js without bundling or --experimental-require-module.

gotchaThe package has not been updated since 2013; may have unpatched vulnerabilities or compatibility issues with modern Node.js.

deprecatedThe package is unmaintained; no new features or bug fixes are expected.

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Version history

Breaking-change detection hasn't run for this library yet.

Audit

Security & dependencies

CVE tracking and dependency tree are planned for a later release.

Agent activity

16 hits · last 30 days

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Resources

githubhttps://github.com/lleo/node-dequeue ↗

packagedequeue ↗

homepagehttps://github.com/lleo/node-dequeue ↗