# mocha v12.0.0 - Product: mocha (https://whatsnew.fyi/product/mocha) - Vendor: mocha - Date: 2026-08-31 - Version: v12.0.0 - Original notes: https://github.com/mochajs/mocha/releases/tag/v12.0.0 - Permalink: https://whatsnew.fyi/product/mocha/releases/v12.0.0 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 ยฉ What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted โ€” terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'. --- - **fixed** โ€” Fix parsing of negative numbers and quoted strings - **fixed** โ€” Preserve FIFO descriptors when respawning ##### [12.0.0](https://github.com/mochajs/mocha/compare/v12.0.0-rc.6...v12.0.0) (2026-08-31) ###### ๐Ÿฉน Fixes * fixup parsing negative numbers and quoted strings ([#6250](https://github.com/mochajs/mocha/issues/6250)) ([2962875](https://github.com/mochajs/mocha/commit/2962875f70df72ec5f0aaba45b3776167902894e)) * preserve FIFO descriptors when respawning ([#6254](https://github.com/mochajs/mocha/issues/6254)) ([3bb317d](https://github.com/mochajs/mocha/commit/3bb317dbe7edc460f44328e630f607aa26773a4d)) ###### ๐Ÿ“š Documentation * fix minor correctness issues ([#6215](https://github.com/mochajs/mocha/issues/6215)) ([e6b9ee7](https://github.com/mochajs/mocha/commit/e6b9ee773481fd739ae24caeb42f32ac0b010f95)) * link to mochajs.org instead of the wiki ([#6216](https://github.com/mochajs/mocha/issues/6216)) ([8720225](https://github.com/mochajs/mocha/commit/8720225413002aeda0a8760e911374fddd6e7b24)) ###### ๐Ÿงน Chores * setup Release Please for v12 stable ([#6084](https://github.com/mochajs/mocha/issues/6084)) ([219674f](https://github.com/mochajs/mocha/commit/219674fa5bfaf8fa740fab783344703a2991532d))