# What changed in @math.gl/web-mercator

> 2 changes in @math.gl/web-mercator 4 from its official release notes, upgrade guides and advisories: 1 breaking. Each one cited. Sources checked 2026-10-25. HTML: https://unstale.sh/npm/@math.gl/web-mercator/

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

## @math.gl/web-mercator 4

### Breaking changes

- The gl-matrix dependency has been removed; applications can still install and import gl-matrix, which should remain highly compatible with math.gl. (4.0.0) — [upgrade guide](https://visgl.github.io/math.gl/docs/upgrade-guide)

### Tooling

- math.gl v4.0 is packaged as ESM modules, with additional CommonJS exports; in most cases importing should continue to work without problems. (4.0.0) — [upgrade guide](https://visgl.github.io/math.gl/docs/upgrade-guide)