# What changed in @stryker-mutator/typescript-checker

> 2 changes in @stryker-mutator/typescript-checker 10 from its official release notes, upgrade guides and advisories: 1 breaking. Each one cited. Sources checked 2026-10-19. HTML: https://unstale.sh/npm/@stryker-mutator/typescript-checker/

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

## @stryker-mutator/typescript-checker 10

### Breaking changes

- Node.js 20 is no longer supported; Node.js 22 or higher is required. (10.0.0) — [release notes](https://github.com/stryker-mutator/stryker-js/blob/cb3bd8fe25d5215422c9b632357062d3a43fcf92/packages/typescript-checker/CHANGELOG.md#1000-2026-08-14)

### Tooling

- Adds experimental support for TypeScript 7. (10.0.0) — [release notes](https://github.com/stryker-mutator/stryker-js/blob/cb3bd8fe25d5215422c9b632357062d3a43fcf92/packages/typescript-checker/CHANGELOG.md#1000-2026-08-14)