Registry / testing / simple-in-memory-queue

simple-in-memory-queue

library1.1.7jsnpmunverified

Simple-in-memory-queue v1.1.7 is a lightweight in-memory queue library for Node.js (>=8) and browser environments, written in TypeScript with included type definitions. It provides basic queue operations (push, pop, peek) and event subscriptions, along with built-in consumer patterns: debounce, batch, and resilient remote consumer with retries and backpressure. Unlike heavier alternatives like Bull or Bee-Queue, it requires no external storage or message broker, making it ideal for simple client-side or server-side queuing needs. The library is actively maintained with frequent releases.

testing

npm install simple-in-memory-queue

github ↗package ↗homepage ↗

INSTALL

IMPORT

SIG · SIMPLE-IN-MEMORY-Q

simple-in-memory-queue

testingjavascriptv1.1.7

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.

createQueue

✓ import { createQueue } from 'simple-in-memory-queue'

ESM import with named export. Requires TypeScript or Node.js ESM.

Shows basic queue creation with FIFO order, push/pop/peek operations, and event subscription.

import { createQueue, QueueOrder } from 'simple-in-memory-queue'; const queue = createQueue({ order: QueueOrder.FIRST_IN_FIRST_OUT }); queue.push('a'); queue.push(['b', 'c']); console.log(queue.peek()); // ['a'] console.log(queue.pop(2)); // ['a', 'b'] console.log(queue.length); // 1 queue.on.push.subscribe(({ item }) => console.log('pushed:', item)); queue.push('d'); // logs 'pushed: d'

Debug

Known issues

gotchaCalling pop() with no arguments returns an array of one item, not a single value.

fix

Use pop(1) for an array of one item, or destructure: const [item] = queue.pop();

affects: >=0.0.0

gotchaThe `order` option is required in createQueue object argument even if order doesn't matter.

fix

Pass { order: QueueOrder.FIRST_IN_FIRST_OUT } explicitly.

affects: >=0.0.0

gotchapush accepts a single item or an array of items. Passing an array as a single item will be treated as multiple items.

fix

To push an array as a single item, wrap it: queue.push([myArray]);

affects: >=0.0.0

Errors

Common errors & fixes

TypeError: queue.pop is not a function

Importing incorrectly, e.g., import Queue from 'simple-in-memory-queue' instead of named import.

fix

Use correct import: import { createQueue } from 'simple-in-memory-queue';

Cannot read property 'subscribe' of undefined

Trying to subscribe to events before creating the queue.

fix

Create the queue first: const queue = createQueue(...); then queue.on.push.subscribe(...);

Upgrade

Version history

1.1.7latest on npm

Audit

Dependencies

No dependency data recorded yet.

Agent activity

6 hits · last 30 days

node

Resources

githubhttps://github.com/ehmpathy/simple-in-memory-queue ↗

packagesimple-in-memory-queue ↗

homepagehttps://github.com/ehmpathy/simple-in-memory-queue ↗