# it-queueless-pushable

> A pushable queue that waits until a value is consumed before accepting another

Latest version **2.0.5** (published 2026-04-10) · Apache-2.0 OR MIT license · 0 weekly downloads

## Install

```sh
npm install it-queueless-pushable
pnpm add it-queueless-pushable
yarn add it-queueless-pushable
bun add it-queueless-pushable
```

## Health

**Score 70/100 (B)** — status: active.

Positive: has types; esm support; no vulnerabilities; has provenance; high maintenance score; high quality score.

Warnings: low downloads.

## Facts

| | |
|---|---|
| Version | 2.0.5 |
| Published | 2026-04-10 |
| First published | 2024-05-30 |
| Weekly downloads | 0 |
| License | Apache-2.0 OR MIT |
| TypeScript types | bundled |
| Module format | ESM |
| Dependencies | 3 |
| Unpacked size | 31.6 KB |
| Known vulnerabilities | 0 |
| Install scripts | no |
| Provenance | attested (GitHub Actions) |
| GitHub stars | 283 |
| Author | Alex Potsides |
| Maintainers | achingbrain |

## Links

- npm: https://www.npmjs.com/package/it-queueless-pushable
- Repository: https://github.com/achingbrain/it
- Homepage: https://github.com/achingbrain/it/tree/main/packages/it-queueless-pushable#readme
- Issues: https://github.com/achingbrain/it/issues
- npm.io page: https://npm.io/package/it-queueless-pushable

## Dependencies (3)

- [p-defer](https://npm.io/package/p-defer.md) ^4.0.1
- [abort-error](https://npm.io/package/abort-error.md) ^1.0.2
- [race-signal](https://npm.io/package/race-signal.md) ^2.0.0

## Recent versions

- 2.0.5 (latest) — 2026-04-10
- 2.0.4 — 2026-04-10
- 2.0.3 — 2025-12-12
- 2.0.2 — 2025-06-01
- 2.0.1 — 2025-05-13
- 2.0.0 — 2025-03-19
- 1.0.2 — 2025-03-06
- 1.0.1 — 2025-03-06
- 1.0.0 — 2024-05-30
- 0.0.0 — 2024-05-30

## README

# it-queueless-pushable

[![codecov](https://img.shields.io/codecov/c/github/achingbrain/it.svg?style=flat-square)](https://codecov.io/gh/achingbrain/it)
[![CI](https://img.shields.io/github/actions/workflow/status/achingbrain/it/js-test-and-release.yml?branch=main\&style=flat-square)](https://github.com/achingbrain/it/actions/workflows/js-test-and-release.yml?query=branch%3Amain)

> A pushable queue that waits until a value is consumed before accepting another

# About

<!--

!IMPORTANT!

Everything in this README between "# About" and "# Install" is automatically
generated and will be overwritten the next time the doc generator is run.

To make changes to this section, please update the @packageDocumentation section
of src/index.js or src/index.ts

To experiment with formatting, please run "npm run docs" from the root of this
repo and examine the changes made.

-->

A pushable async generator that waits until the current value is consumed
before allowing a new value to be pushed.

Useful for when you don't want to keep memory usage under control and/or
allow a downstream consumer to dictate how fast data flows through a pipe,
but you want to be able to apply a transform to that data.

## Example

```typescript
import { queuelessPushable } from 'it-queueless-pushable'

const pushable = queuelessPushable<string>()

// run asynchronously
Promise.resolve().then(async () => {
  // push a value - the returned promise will not resolve until the value is
  // read from the pushable
  await pushable.push('hello')
})

// read a value
const result = await pushable.next()
console.info(result) // { done: false, value: 'hello' }
```

# Install

```console
$ npm i it-queueless-pushable
```

## Browser `<script>` tag

Loading this module through a script tag will make its exports available as `ItQueuelessPushable` in the global namespace.

```html
<script src="https://unpkg.com/it-queueless-pushable/dist/index.min.js"></script>
```

# API Docs

- <https://achingbrain.github.io/it/modules/it-queueless-pushable.html>

# License

Licensed under either of

- Apache 2.0, ([LICENSE-APACHE](https://github.com/achingbrain/it/blob/main/packages/it-queueless-pushable/LICENSE-APACHE) / <http://www.apache.org/licenses/LICENSE-2.0>)
- MIT ([LICENSE-MIT](https://github.com/achingbrain/it/blob/main/packages/it-queueless-pushable/LICENSE-MIT) / <http://opensource.org/licenses/MIT>)

# Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.

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_Source: https://npm.io/package/it-queueless-pushable · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._