@sindresorhus/is

8.1.0 · 11 May 2026MIT93.8M / weekRepository Homepage npm Atom feed

Same major only

1 release in betweenevery note read

Other targets from 1.2.0Latest8.1.0

1
change to make: 0
advisories fixed: 5
new: 0
fixes

Before you upgrade

Tick each one off as you go

Require Node.js 10 af6b03d
breaking2.0.0

Release by release

2.0.0
29 Jan 20205 new
- new
  Add assert named export and assertion TypeScript type guards (#97) 0c3f110
- new
  Propagate generic TypeScript types where possible (#103) d28c86e
- new
  Add .asyncGenerator and .asyncGeneratorFunction detection (#100) 446a7a0
- new
  Make the NodeStream type more accurate aeb3f74
- new
  Improve the type assertion for is.asyncFunction c25b606

Upgrade to 2.0.0

npm install @sindresorhus/is@2.0.0

What 2.0.0 needs

Reading 2.0.0's manifest…

Check against your package.json

Which of your other dependencies stand in the way of 2.0.0. Read once, not stored.

After upgrading

Run the type checker, the linter and the tests.
Build, and look for new deprecation warnings.
Update peer dependencies the new version asks for.