# What changed in es-check

> 16 changes in es-check 9 from its official release notes, upgrade guides and advisories: 3 new APIs and options. Each one cited. Sources checked 2026-10-24. HTML: https://unstale.sh/npm/es-check/

To see which of these apply to a repository, run `npx @unstale/cli init` in it.

## es-check 9

### New APIs and options

- Adds the browserslistQuery option for specifying a Browserslist query. (9.0.0) — [release notes](https://github.com/yowainwright/es-check/releases/tag/9.0.0)
- Adds more .escheckrc support. (9.0.0) — [release notes](https://github.com/yowainwright/es-check/releases/tag/9.0.0)
- Adds whitelist support. (9.0.0) — [release notes](https://github.com/yowainwright/es-check/releases/tag/9.0.0)

### Behavior and default changes

- Features are checked against the target browsers specified by Browserslist. (9.8.0) — [release notes](https://github.com/yowainwright/es-check/releases/tag/v9.8.0)
- Improves the terminal flow. (9.5.4) — [release notes](https://github.com/yowainwright/es-check/releases/tag/9.5.4)

### Tooling

- Adds support for Promise.resolve/reject features in es-check. (9.0.0) — [release notes](https://github.com/yowainwright/es-check/releases/tag/9.0.0)

### Fixes and other changes

- Fixes an issue with polyfills. (9.8.1) — [release notes](https://github.com/yowainwright/es-check/releases/tag/v9.8.1)
- Fixes the theme color. (9.7.2) — [release notes](https://github.com/yowainwright/es-check/releases/tag/v9.7.2)
- Reduces false positives when detecting PromiseAny and Set methods. (9.6.3) — [release notes](https://github.com/yowainwright/es-check/releases/tag/9.6.3)
- Fixes a hover issue in the app. (9.5.4) — [release notes](https://github.com/yowainwright/es-check/releases/tag/9.5.4)
- Fixes HTML-related behavior in the app. (9.5.4) — [release notes](https://github.com/yowainwright/es-check/releases/tag/9.5.4)
- Fixes an issue with logical assignment. (9.5.2) — [release notes](https://github.com/yowainwright/es-check/releases/tag/9.5.2)
- Updates browserlist to support newer JavaScript versions. (9.5.1) — [release notes](https://github.com/yowainwright/es-check/releases/tag/9.5.1)
- Fixes an issue with parsing boolean options. (9.4.6) — [release notes](https://github.com/yowainwright/es-check/releases/tag/v9.4.6)
- Fixes a bug with wrongly matching numeric separators. (9.4.5) — [release notes](https://github.com/yowainwright/es-check/releases/tag/9.4.5)
- Improves support for ignoreFile. (9.0.0) — [release notes](https://github.com/yowainwright/es-check/releases/tag/9.0.0)