Core

• Fix duplicate bundles error message – Details

JavaScript

• Support ESM externals and exports in dev packager – Details
• Treat Deno's jsr: dependencies as external – Details

• Updated to React 19.1, which enables Server Components to be used with stable React instead of only canary – Details

Core

• Enable resolving source field in dev dependencies – Details
• Error when building a library target in serve mode – Details

JavaScript

• Fix MDX inline assets in static RSCs – Details
• Fix symbol collection with multiple exports of same function (e.g. date-fns) – Details

REPL

• Fix error overlay resolution in REPL – Details

create-parcel

• Fix gitignore in create-parcel – Details
• Fix create-parcel on windows – Details

• Fix resolving package self references – Details

Core

• Add a CLI to create new Parcel apps – Details

JavaScript

• React Server Components – Details, Details, Details, Details, Details
• Add RSC-based static site generator – Details
• First-class MDX support – Details
• Merge React Refresh runtime and transformer – Details
• Modernize React error overlay – Details
• Support bundling node native modules – Details
• Use import maps for bundle manifest – Details

Dev Server

• Support running node bundles in dev server – Details
• Apply HMR updates via node worker thread – Details

• Fix dev dep request missing 'invalidateOnCreate' – Details
• Add napi-wasm as optional peer dependency in @parcel/rust – Details

• Ignore invalid package.json fields – Details

JavaScript

• Fix HMR when asset is duplicated between multiple bundles – Details

SASS

• Fix SASS resolution with non file: URLs – Details

JavaScript

• Improve HMR with dynamic imports – Details
• Update SWC – Details

SASS

• Fix SASS resolution rules for modern API – Details

Core

• Expose watcher ignore and watcher backend options – Details
• Improve large watcher events payload experience – Details
• Add support for globs in package.json#source – Details
• Add config key invalidation – Details

Bundler

• Add library bundler – Details, Docs

Dev Server

• Support .proxyrc.ts – Details, Docs

Resolver

• 12x faster resolver cache – Details
• Correctly handle empty resolver diagnostics array – Details

Core

• Remove abortcontroller-polyfill – Details
• Fix missing content key in symbol propagation when asset is removed – Details
• Update minimum supported node version to 16 – Details
• Ensure the snapshot directory matches the watch dir – Details
• Add parcel version to PluginOptions – Details
• Fix possible race condition in the caching of request graph – Details
• Ensure empty extended config throws a diagnostic – Details
• Ensure Asset public ids are assigned deterministically – Details
• Directories ignored by watcher should be relative to the watch directory – Details
• Fix request tracker incremental cache write for new nodes – Details
• Improve request graph cache reading – Details
• Exit process with error code when reporters fail – Details
• Write tmp files to the OS tmp directory - Details
• Fix small HMR issues – Details
• Fix crash in EntryRequest with multiple globs in the source field – Details
• Revert split manifest runtime bundles – Details
• Revert chunked cache blobs for improved stability – Details
• Update dependencies – Details

Bundler

• Fix assets outside project root with Manual Shared Bundles – Details

JavaScript

• Avoid non-identifier export names in non-entry library bundles – Details
• Relax react-refresh version range – Details
• Also emit swc recoverable errors – Details
• Bump swc – Details, Details, Details, Details
• Bump swc and browserslist-rs – Details
• Replace std::sync locks with parking_lot locks for better stability – Details
• Ensure const modules in async bundles are wrapped – Details
• Fix dev packager global reference – Details
• Fix import usage tracking for destructure defaulting – Details
• Update Node.js globals replacer to use SWC VisitMut – Details
• Update process.env replacer to use SWC VisitMut – Details
• Update Node.js __filename and __dirname replace to use SWC VisitMut – Details
• Fix parcelRequire being added to multi-target libraries – Details
• Handle TypeScript expressions in macro evaluator – Details

Resolver

• Fix NUL byte crash in resolver – Details
• Change default resolver error message for custom specifiers – Details

TypeScript

• Handle dynamic import type references in TS types transformer – Details
• Correctly handle qualified names in TS types import() – Details

SASS

• Migrate to new sass API – Details

SVG

• Load svgo version from project – Details
• Update svgr and use project svgo version – Details

Image

• Bump oxipng – Details

Vue

• Upgrade consolidate to v1 – Details

Web Extensions

• Allow both service_worker and scripts in MV3 Web Extensions – Details

Core

• Add REPL playground for Parcel to the website – Details
• Improve package manager detection for auto install – Details

JavaScript

• Add support for JS macros – Details
• Statically evaluate constants referenced by macros – Details
• Upgrade to ESLint 8 – Details
• Bump swc – Details

CSS

• Use lightningcss to implement CSS packager – Details

Bundler

• Rename "parentAsset" to "root" for Manual Shared Bundle config and remove unstable prefix – Details

Web Extensions

• Add content script world property to manifest schema validation – Details

Performance

• Adjacency list optimizations – Details
• Break up request graph cache serialisation and run after build completion – Details

Core

• Drop per-pipeline transformation cache – Details
• Clippy and use napi's Either3 – Details
• Add lazy/eager cache key to avoid invalid change when switching modes – Details

JavaScript

• Remove decl_collector pass and use SWC's unresolved_mark instead – Details

Bundler

• Fix multiple css bundles in entry bundle groups issue – Details
• Allow parallel type change bundles to be reused by async siblings – Details
• Skip on missing parent asset for manual shared bundles – Details