Package

isomorphic-unfetch

Switches between unfetch & node-fetch for client & server.

v4.0.2, 3 Jan 2023MITESM + CommonJSTypes: BundledPolyfills and shims

$ npm install isomorphic-unfetch

npm GitHub Homepage

Key numbers

As of 25 Sept 2026

Weekly downloads: 2.1m; +11% over 12 months
Gzip bundle size: -; No Bundlephobia data
Dependencies: 2; Direct, from package.json
Last release: 3 years ago; v4.0.2
GitHub stars: 5.7k; 204 forks
Open issues / PRs: 20 / 10
Contributors: -
Commits, last 52 weeks: 0

Downloads

Last week 2026-09-15 to 2026-09-21

Weekly npm downloads, one point per week, weeks starting 23 Sept 2025 to 15 Sept 2026. The y axis starts at zero.

2,100,235 downloads last week, 10,052,772 in the last month. The 12-month change of +11% compares the average of the last 4 weeks with the first 4 weeks of the series.

Maintenance

Releases, last 12 months: 010 in total
Latest version: 4.0.2, 3 Jan 20233 years ago
First published: 26 Feb 2017
Last push to GitHub: 23 Jul 20231,159 days before the snapshot
Repository archived: No
Open issues: 20
Open pull requests: 10
Commits, last 52 weeks: 0
Dependents on npm: -

Major versions

v4 first release 4.0.0, 31 Dec 2022
v3 first release 3.0.0, 17 Sept 2018
v2 first release 2.0.0, 28 Jun 2017
v1 first release 1.0.0, 19 Mar 2017
v0 first release 0.1.0, 26 Feb 2017

Recent releases

Version	Published
4.0.2	3 Jan 2023
4.0.1	31 Dec 2022
4.0.0	31 Dec 2022
3.1.0	29 Sept 2020
3.0.0	17 Sept 2018
2.1.1	30 Jul 2018
2.1.0	20 Jul 2018
2.0.0	28 Jun 2017
1.0.0	19 Mar 2017
0.1.0	26 Feb 2017

Compatibility

Module format: ESM + CommonJSFrom package.json type, main and exports fields
TypeScript types: Bundled
Node.js engine range: Not declared
Runtimes: -
Unpacked size (npm): 3.3 kB
Dependencies (2): unfetchnode-fetch

Install

npm install isomorphic-unfetch

CDN

jsDelivrhttps://cdn.jsdelivr.net/npm/isomorphic-unfetch@4.0.2/
unpkghttps://unpkg.com/isomorphic-unfetch@4.0.2/
esm.shhttps://esm.sh/isomorphic-unfetch@4.0.2

Alternatives

Package	Weekly downloads	Gzip	Last release	Module	Comparison
headers-polyfill A native "Headers" class polyfill.	14m	-	6 months ago	ESM + CommonJS	-
abortcontroller-polyfill Polyfill/ponyfill for the AbortController DOM API + optional patching of fetch (stub that calls catch, doesn't actually abort request).	2.3m	-	1 year ago	CommonJS	-
headers-utils A Headers class polyfill and transformation library.	595.7k	-	5 years ago	CommonJS	-

Sources: npm registry, npm downloads API, GitHub API. Data fetched 25 Sept 2026.

Indexability: Indexed.