What's Changed

Highlights 💡

Support import.meta style module variables

Rspack now exposes more module variables through import.meta, which aligns better with the ESM specification than CommonJS-style injected globals. When authoring ESM modules, import.meta is now the recommended way to access these runtime values.

The newly supported import.meta properties are:

New import.meta API	Existing runtime variable
import.meta.rspackPublicPath	__webpack_public_path__
import.meta.rspackBaseUri	__webpack_base_uri__
import.meta.rspackShareScopes	__webpack_share_scopes__
import.meta.rspackInitSharing	__webpack_init_sharing__
import.meta.rspackNonce	__webpack_nonce__
import.meta.rspackUniqueId	__rspack_unique_id__
import.meta.rspackVersion	__rspack_version__
import.meta.rspackHash	__webpack_hash__

New Features 🎉

• feat: support import.meta style module variables (#14539 by @LingyuCoder)

Performance 🚀

• perf: deduplicate runtime module macro glue (#14620 by @intellild)
• perf: avoid cloning side effects artifact in module concatenation (#14622 by @hardfist)

Bug Fixes 🐞

• fix(browser): inject runtime require into browser MF runtime (#14590 by @CPunisher)
• fix(ci): build wasm in release debug so the wasm binding gets published (#14614 by @stormslowly)
• fix(rslib): preserve import phase in dynamic import external rendering (#14615 by @elecmonkey)
• fix: empty references export for cjs and dynamic import tree shaking (#14629 by @ahabhgk)

Document 📖

• docs: document asset/resource emit generator option (#14602 by @chenjiahan)
• docs: document json parser parse option (#14606 by @chenjiahan)
• docs: document more rule use options (#14610 by @chenjiahan)
• docs: update module variable docs for import.meta (#14618 by @LingyuCoder)
• docs: enable Rspress anchor checks (#14627 by @chenjiahan)

Other Changes

• chore(deps): update patch npm dependencies (#14595 by @renovate[bot])
• chore(deps): update dependency @babel/preset-react to ^7.29.7 (#14597 by @renovate[bot])
• chore(deps): update dependency @ast-grep/napi to ^0.44.0 (#14596 by @renovate[bot])
• chore(deps): update dependency @rsbuild/core to v2.1.1 (#14603 by @renovate[bot])
• chore(deps): update dependency @rspack/dev-server to ^2.1.0 (#14604 by @renovate[bot])
• chore(deps): update dependency @shikijs/transformers to ^4.3.0 - autoclosed (#14605 by @renovate[bot])
• chore(deps): update dependency mermaid to ^11.16.0 (#14607 by @renovate[bot])
• chore(deps): update dependency ts-checker-rspack-plugin to ^1.5.1 (#14608 by @renovate[bot])
• chore(deps): update dependency @rsbuild/plugin-sass to v2 (#14609 by @renovate[bot])
• chore: remove obsolete perf agent skills (#14613 by @hardfist)

Full Changelog: https://github.com/web-infra-dev/rspack/compare/v2.1.1...v2.1.2