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Add bugfix plugin for Safari array rest destructuring bug - #17788
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I just come up with a new idea that will further shrink the extra footprint to 2 bytes, let me give it a try. |
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Never mind, the new approach is to unshift hole elements into both array, but that would break TSSatisfiesExpression since the array composition is changed. However, either approach would change the completion value of an assignment expression, which would otherwise be kept by the trailling comma approach. But this approach would not survive from minifiers... |
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Backport of f1a708c Co-authored-by: Nicolò Ribaudo <hello@nicr.dev>
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# Bump @babel/core from 7.28.5 to 7.29.7 Bumps [@babel/core](https://github.com/babel/babel/tree/HEAD/packages/babel-core) from **7.28.5** to **7.29.7**. ## Release Notes *Sourced from [@babel/core's releases](https://github.com/babel/babel/releases).* ### v7.29.7 (2026-05-25) Re-release all packages with npm provenance attestations. --- ### v7.29.6 (2026-05-25) #### 🐛 Bug Fixes - **`babel-generator`** - [#18014](babel/babel#18014) Catchup source map position in preserveFormat ([`@nicolo-ribaudo`](https://github.com/nicolo-ribaudo)) - **`babel-core`** - [#18001](babel/babel#18001) [7.x backport] Improve input source map handling ([`@JLHwung`](https://github.com/JLHwung)) - **`babel-core`, `babel-generator`** - [#17998](babel/babel#17998) Preserve original identifier names from input sourcemaps ([#17992](babel/babel#17992)) ([`@Andarist`](https://github.com/Andarist)) #### Committers - Huáng Jùnliàng ([`@JLHwung`](https://github.com/JLHwung)) - Mateusz Burzyński ([`@Andarist`](https://github.com/Andarist)) - Nicolò Ribaudo ([`@nicolo-ribaudo`](https://github.com/nicolo-ribaudo)) --- ### v7.29.5 (2026-05-05) #### 🏠 Internal - **`babel-preset-env`** - Update `@babel/*` dependencies --- ### v7.29.4 (2026-05-05) #### 🐛 Bug Fixes - **`babel-plugin-transform-modules-systemjs`** - [#17974](babel/babel#17974) [7.x backport] fix(systemjs): improve module string name support ([`@JLHwung`](https://github.com/JLHwung)) #### Committers - Huáng Jùnliàng ([`@JLHwung`](https://github.com/JLHwung)) --- ### v7.29.3 (2026-04-30) #### 👓 Spec Compliance - **`babel-parser`** - [#17923](babel/babel#17923) Support flow extends bound ([`@JLHwung`](https://github.com/JLHwung)) #### 🐛 Bug Fixes - **`babel-helper-create-class-features-plugin`, `babel-plugin-proposal-decorators`** - [#17931](babel/babel#17931) fix(decorators): replace super within all removed static elements ([`@JLHwung`](https://github.com/JLHwung)) - **`babel-register`** - [#17915](babel/babel#17915) Fix thread synchronization issues in `@babel/register` ([`@liuxingbaoyu`](https://github.com/liuxingbaoyu)) - **`babel-compat-data`, `babel-plugin-bugfix-safari-rest-destructuring-rhs-array`, `babel-preset-env`** - [#17788](babel/babel#17788) Add bugfix plugin for Safari array rest destructuring bug ([`@JLHwung`](https://github.com/JLHwung)) #### 💅 Polish - **`babel-parser`** --- ## Included Commits - [`4fba754`](babel/babel@4fba754) — v7.29.7 - [`04ea6b2`](babel/babel@04ea6b2) — v7.29.6 - [`99f498a`](babel/babel@99f498a) — [7.x backport] Improve input source map handling (#18001) - [`feba0a3`](babel/babel@feba0a3) — Preserve original identifier names from input sourcemaps (#17992, #17998) - [`aa8394e`](babel/babel@aa8394e) — v7.29.0 - [`ad0d03f`](babel/babel@ad0d03f) — [7.x backport] feat: Allow specifying startLine in code frame (#17739) - [`d7f4008`](babel/babel@d7f4008) — v7.28.6 - [`e130225`](babel/babel@e130225) — Polish(standalone): improve message on invalid preset/plugin (#17606) - [`99dcba5`](babel/babel@99dcba5) — chore: enable some ts-eslint rules (#17592) - [`c92c491`](babel/babel@c92c491) — Improve Unicode handling in code-frame tokenizer (#17589) ## Full Diff https://github.com/babel/babel/commits/v7.29.7/packages/babel-core
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In this PR we introduce a new bugfix plugin
@babel/plugin-bugfix-safari-rest-destructuring-rhs-array, which detects the affected code patterns by this Safari bug and transform the affected code such thatThis plugin is also added to the
preset-env. In Babel 8, thebugfixesoption is always enabled, so if users ever targeted affected Safari versions from 9 to 13.1, this plugin will be enabled automatically to avoid triggering the specific Webkit bug.This PR is currently blocked by #17787 as the CI is failing. I will rebase once that PR gets merged.