# fast-defer > A fast and minimal deferred implementation for javascript Latest version **1.1.9** (published 2025-09-15) · MIT license · 0 weekly downloads ## Install ```sh npm install fast-defer pnpm add fast-defer yarn add fast-defer bun add fast-defer ``` ## Health **Score 65/100 (B)** — status: stable. Positive: has types; esm support; no vulnerabilities; has provenance; high quality score. Warnings: low downloads. ## Facts | | | |---|---| | Version | 1.1.9 | | Published | 2025-09-15 | | First published | 2021-12-08 | | Weekly downloads | 0 | | License | MIT | | TypeScript types | bundled | | Module format | ESM + CommonJS | | Dependencies | 0 | | Unpacked size | 17.7 KB | | Known vulnerabilities | 0 | | Install scripts | no | | Provenance | attested (GitHub Actions) | | GitHub stars | 74 | | Author | Arthur Fiorette | | Maintainers | hazork | ## Links - npm: https://www.npmjs.com/package/fast-defer - Repository: https://github.com/arthurfiorette/tinylibs - Homepage: https://tinylibs.js.org/packages/fast-defer - Issues: https://github.com/arthurfiorette/tinylibs/issues - npm.io page: https://npm.io/package/fast-defer ## Recent versions - 1.1.9 (latest) — 2025-09-15 - 1.1.8 — 2023-11-16 - 1.1.7 — 2022-03-20 - 1.1.6 — 2022-03-20 - 1.1.5 — 2022-02-28 - 1.1.4 — 2022-02-28 - 1.1.3 — 2021-12-30 - 1.1.2 — 2021-12-08 - 1.1.1 — 2021-12-08 - 1.1.0 — 2021-12-08 - 1.0.0 — 2021-12-08 ## README
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🏃
Fast Defer

Fast Defer is a fast and minimal deferred implementation for javascript.


## Table of Contents - [Table of Contents](#table-of-contents) - [Installing](#installing) - [Node](#node) - [Browser](#browser) - [Url Import](#url-import) - [Getting Started](#getting-started) - [Browser Compatibility](#browser-compatibility) - [License](#license)
## Installing ### Node ```sh npm install fast-defer # or yarn add fast-defer ``` ```js const { deferred } = require('fast-defer'); import { deferred } from 'fast-defer'; ``` ### Browser ```html ``` ```js const { deferred } = window.fastDefer; ``` ### Url Import ```ts import { deferred } from 'https://cdn.skypack.dev/fast-defer@latest'; ```
## Getting Started A deferred is nothing more than a promise with `.resolve()` and a `.reject()` method. You can use it to create a promise that will be resolved or rejected at some point in the future and, probably, in another scope. ```js import { deferred, isDeferred } from 'fast-defer'; const waitingSomething = deferred(); waitingSomething.then((val) => { console.log('Resolved'); }); waitingSomething.catch((error) => { console.log('Rejected'); }); // Other file, function or etc someCallback((response, error) => { if (error) { waitingSomething.reject(error); } else { waitingSomething.resolve(response); } }); ```
## Browser Compatibility | | Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | Node.js | Deno | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on iOS | Samsung Internet | | --------------------------------------------------------------------------------------------------------------------------------------- | ------ | ---- | ------- | ----------------- | ----- | ------ | ------- | ---- | --------------- | -------------- | ------------------- | ------------- | ------------- | ---------------- | | [Promise() constructor](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise#browser_compatibility) | 32 | 12 | 29\* | X | 19 | 8 | 0.12 | 1.0 | 4.4.3 | 32 | 29\* | 19 | 8\* | 2.0 | | [Symbol() constructor](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Symbol#browser_compatibility) | 38 | 12 | 36 | X | 25 | 9 | 0.12 | 1.0 | 38 | 38 | 36 | 25 | 9 | 3.0 |
## License Licensed under the **MIT**. See [`LICENSE`](LICENSE) for more informations. [![FOSSA Status](https://app.fossa.com/api/projects/git%2Bgithub.com%2Farthurfiorette%2Ftinylibs.svg?type=small)](https://app.fossa.com/projects/git%2Bgithub.com%2Farthurfiorette%2Ftinylibs?ref=badge_small)
--- _Source: https://npm.io/package/fast-defer · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._