npm / es-check
es-check
What changed in es-check 9, from its official release notes, upgrade guides and advisories. Sources checked 2026-10-24.
3 new APIs and options2 behavior and defaults1 tooling10 fixes and other
See which of these apply to your code, ranked, in your agent:
npx @unstale/cli inites-check 916 changes
New APIs and options 3
Adds the browserslistQuery option for specifying a Browserslist query.
Adds more .escheckrc support.
Adds whitelist support.
Behavior and default changes 2
Features are checked against the target browsers specified by Browserslist.
Improves the terminal flow.
Tooling 1
Adds support for Promise.resolve/reject features in es-check.
Fixes and other changes 10
Fixes an issue with polyfills.
Fixes the theme color.
Reduces false positives when detecting PromiseAny and Set methods.
Fixes a hover issue in the app.
Fixes HTML-related behavior in the app.
Fixes an issue with logical assignment.
Updates browserlist to support newer JavaScript versions.
Fixes an issue with parsing boolean options.
Fixes a bug with wrongly matching numeric separators.
Improves support for ignoreFile.