--- title: New in Re.Pack 5.2: Faster Babel Transforms, Support for... description: Re.Pack 5.2 is a non-breaking release introducing a hybrid Babel & SWC transform loader that parallelizes compilation, cutting cold build times by 2.6x (52.4s... canonical: https://daily.dev/posts/new-in-re-pack-5-2-faster-babel-transforms-support-for-rn-0-80-0-81-typed-configs-rozenite-co-pn2pxu6ca twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: New in Re.Pack 5.2: Faster Babel Transforms, Support for RN 0.80 & 0.81, Typed Configs & Rozenite compatibility | daily.dev og:description: Re.Pack 5.2 is a non-breaking release introducing a hybrid Babel & SWC transform loader that parallelizes compilation, cutting cold build times by 2.6x (52.4s... og:url: https://daily.dev/posts/new-in-re-pack-5-2-faster-babel-transforms-support-for-rn-0-80-0-81-typed-configs-rozenite-co-pn2pxu6ca og:image: https://api.daily.dev/og/posts/Pn2PXU6ca.png og:image:alt: New in Re.Pack 5.2: Faster Babel Transforms, Support for RN 0.80 & 0.81, Typed Configs & Rozenite compatibility og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # New in Re.Pack 5.2: Faster Babel Transforms, Support for RN 0.80 & 0.81, Typed Configs & Rozenite compatibility **[Callstack Blog](https://daily.dev/sources/callstack-blog)** · 9 min read · 3 upvotes · 0 comments ## Summary Re.Pack 5.2 is a non-breaking release introducing a hybrid Babel & SWC transform loader that parallelizes compilation, cutting cold build times by 2.6x (52.4s to 19.8s) and React Compiler builds by 2x. The new `@callstack/repack/babel-swc-loader` is now the recommended default for both Rspack and webpack. The release adds official support for React Native 0.80 and 0.81 (the latter requires the new loader), fully typed configs via `defineRspackConfig`/`defineWebpackConfig` helpers compatible with Node 22/24 type stripping, and integration with the Rozenite DevTools plugin framework. Additional improvements include a Terser plugin preconfigured for production, `file://` protocol support in ScriptManager, code-signing verification for filesystem bundles, improved Package Exports resolution, and a progress bar for Rspack compilation. Upgrading requires only a version bump to 5.2.0 with no breaking changes. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Rspack Releases Version 1.7: Final 1.x Update Before 2.0 Transition](https://daily.dev/posts/rspack-releases-version-1-7-final-1-x-update-before-2-0-transition-pfplemc3h) · InfoQ · 2 upvotes · 0 comments - [Optimizing Our Build Times by Migrating from Webpack to Rspack](https://daily.dev/posts/optimizing-our-build-times-by-migrating-from-webpack-to-rspack-j4os8uopj) · Yelp Engineering · 0 upvotes · 0 comments - [Smoking that Rspack](https://daily.dev/posts/smoking-that-rspack-zwl4ra19h) · Bytes by ui.dev · 6 upvotes · 0 comments --- Tags: [#react-native](https://daily.dev/tags/react-native), [#babel](https://daily.dev/tags/babel) [View this post on daily.dev](https://daily.dev/posts/new-in-re-pack-5-2-faster-babel-transforms-support-for-rn-0-80-0-81-typed-configs-rozenite-co-pn2pxu6ca) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"New in Re.Pack 5.2: Faster Babel Transforms, Support for RN 0.80 & 0.81, Typed Configs & Rozenite compatibility","url":"https://daily.dev/posts/new-in-re-pack-5-2-faster-babel-transforms-support-for-rn-0-80-0-81-typed-configs-rozenite-co-pn2pxu6ca","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/new-in-re-pack-5-2-faster-babel-transforms-support-for-rn-0-80-0-81-typed-configs-rozenite-co-pn2pxu6ca"},"datePublished":"2026-06-08T12:42:35.180Z","dateModified":"2026-06-08T12:43:01.920Z","description":"Re.Pack 5.2 is a non-breaking release introducing a hybrid Babel & SWC transform loader that parallelizes compilation, cutting cold build times by 2.6x (52.4s...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/6f80f7bf8dfb5a8fbbc7bddf330a7cc3?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/6f80f7bf8dfb5a8fbbc7bddf330a7cc3?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"Callstack Blog","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Callstack Blog","logo":"https://media.daily.dev/image/upload/s--3qItoroi--/f_auto,q_auto/v1774179048/logos/callstack-blog?_a=BAMAMiWQ0","url":"https://daily.dev/sources/callstack-blog"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/new-in-re-pack-5-2-faster-babel-transforms-support-for-rn-0-80-0-81-typed-configs-rozenite-co-pn2pxu6ca","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":3},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"react-native,babel","timeRequired":"PT9M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Callstack Blog","item":"https://daily.dev/sources/callstack-blog"},{"@type":"ListItem","position":3,"name":"New in Re.Pack 5.2: Faster Babel Transforms, Support for RN 0.80 & 0.81, Typed Configs & Rozenite compatibility"}]} ```