# MobX 7.0.3

- Product: MobX (https://whatsnew.fyi/product/mobx)
- Vendor: MobX
- Date: 2026-08-19
- Version: 7.0.3
- Original notes: https://github.com/mobxjs/mobx/releases/tag/mobx%407.0.3
- Permalink: https://whatsnew.fyi/product/mobx/releases/7.0.3

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

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- **changed** — Add a node export condition that routes Node and Bun to the existing dist/index.js entry, which picks the prebaked development or production CJS build once at require time, eliminating per-call NODE_ENV checks and ensuring a single mobx instance when mixing import and require in one Node app
- **changed** — Improve performance by avoiding env-agnostic dist/mobx.mjs execution in Node environments

###### Patch Changes

-   [`6f002b8e543ca39d3ee23681e28848d7f1724fae`](https://github.com/mobxjs/mobx/commit/6f002b8e543ca39d3ee23681e28848d7f1724fae) [#4696](https://github.com/mobxjs/mobx/pull/4696) Thanks [@gesposito](https://github.com/gesposito)! - perf: add a `node` export condition that routes Node and Bun to the existing `dist/index.js` entry, which picks the prebaked development or production CJS build once at require time. `import`ing mobx in Node no longer executes the env-agnostic `dist/mobx.mjs` with per-call `NODE_ENV` checks, and mixing `import` and `require` in one Node app now yields a single mobx instance.