Package

is-error-instance

Check if a value is an `Error` instance

v3.0.1, 29 Mar 2025MITESM onlyTypes: BundledDOM and browser utilities

$ npm install is-error-instance

npm GitHub Homepage

Key numbers

As of 25 Sept 2026

Weekly downloads: 224.3k; +121% over 12 months
Gzip bundle size: -; No Bundlephobia data
Dependencies: 0; Direct, from package.json
Last release: 1 year ago; v3.0.1
GitHub stars: 4; 0 forks
Open issues / PRs: 0 / 0
Contributors: -
Commits, last 52 weeks: 42

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.

224,342 downloads last week, 1,073,361 in the last month. The 12-month change of +121% compares the average of the last 4 weeks with the first 4 weeks of the series.

Maintenance

Releases, last 12 months: -
Latest version: 3.0.1, 29 Mar 20251 year ago
First published: -
Last push to GitHub: 13 Sept 202611 days before the snapshot
Repository archived: No
Open issues: 0
Open pull requests: 0
Commits, last 52 weeks: 42
Dependents on npm: 10

Major versions

Recent releases

Compatibility

Module format: ESM onlyFrom package.json type, main and exports fields
TypeScript types: Bundled
Node.js engine range: >=18.18.0
Runtimes: -
Unpacked size (npm): 9.2 kB
Dependencies (0): None

Install

npm install is-error-instance

CDN

jsDelivrhttps://cdn.jsdelivr.net/npm/is-error-instance@3.0.1/
unpkghttps://unpkg.com/is-error-instance@3.0.1/
esm.shhttps://esm.sh/is-error-instance@3.0.1

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

Indexability: Indexed.