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feat(bindings/node): publish @swc/core-wasm32-wasi (napi-rs wasi build) #12064

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feat(bindings/node): publish @swc/core-wasm32-wasi (napi-rs wasi build) #12064

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6bd2a54
feat(bindings/node): publish @swc/core-wasm32-wasi (napi-rs wasi build)
michaelkremenetsky Jul 22, 2026
6d82653
chore: update pnpm-lock.yaml for the wasm32-wasi npm package
michaelkremenetsky Jul 22, 2026
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5 changes: 5 additions & 0 deletions .changeset/core-wasm32-wasi.md
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@@ -0,0 +1,5 @@
---
swc_core: patch
---

feat(node): Publish `@swc/core-wasm32-wasi`, the wasi build of `@swc/core`
13 changes: 12 additions & 1 deletion .github/workflows/publish-npm-package.yml
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Expand Up @@ -305,6 +305,15 @@ jobs:
else
pnpm build --target aarch64-pc-windows-msvc
fi
- host: ubuntu-latest
target: wasm32-wasip1-threads
# `plugin` (wasmer) cannot run inside a wasm module. Only built for core.
build: |
if [[ ${{ inputs.package }} == "core" ]]; then
pnpm build --target wasm32-wasip1-threads --no-default-features --features swc_v1
else
echo "wasm32-wasip1-threads is only built for @swc/core; skipping"
fi
name: "Build ${{ inputs.package }} - ${{ matrix.settings.target }} - node@20"
runs-on: ${{ matrix.settings.host }}
steps:
Expand Down Expand Up @@ -419,7 +428,9 @@ jobs:
path: |
packages/${{ inputs.package }}/swc*
packages/${{ inputs.package }}/*.node
if-no-files-found: error
packages/${{ inputs.package }}/wasi-worker*
# wasm32-wasip1-threads is only built for core, so other packages have no files there.
if-no-files-found: ${{ matrix.settings.target == 'wasm32-wasip1-threads' && inputs.package != 'core' && 'ignore' || 'error' }}
test-macOS-windows-binding:
name: Test bindings on ${{ matrix.settings.target }} - node@${{ matrix.node }}
needs:
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3 changes: 2 additions & 1 deletion packages/core/package.json
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Expand Up @@ -40,7 +40,8 @@
"aarch64-apple-darwin",
"aarch64-unknown-linux-gnu",
"aarch64-unknown-linux-musl",
"aarch64-pc-windows-msvc"
"aarch64-pc-windows-msvc",
"wasm32-wasip1-threads"
]
},
"publishConfig": {
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3 changes: 3 additions & 0 deletions packages/core/scripts/npm/wasm32-wasi/README.md
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# `@swc/core-wasm32-wasi`

This is the **wasm32-wasip1-threads** binary for `@swc/core`
47 changes: 47 additions & 0 deletions packages/core/scripts/npm/wasm32-wasi/package.json
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{
"name": "@swc/core-wasm32-wasi",
"version": "1.15.46",
"cpu": [
"wasm32"
],
"main": "swc.wasi.cjs",
"browser": "swc.wasi-browser.js",
"files": [
"swc.wasm32-wasi.wasm",
"swc.wasi.cjs",
"swc.wasi-browser.js",
"wasi-worker.mjs",
"wasi-worker-browser.mjs"
],
"description": "Super-fast alternative for babel",
"keywords": [
"swc",
"swcpack",
"babel",
"typescript",
"rust",
"webpack",
"tsc"
],
"author": "강동윤 <kdy1997.dev@gmail.com>",
"homepage": "https://swc.rs",
"license": "Apache-2.0 AND MIT",
"engines": {
"node": "^20.19.0 || >=22.12.0"
},
"publishConfig": {
"registry": "https://registry.npmjs.org/",
"access": "public",
"provenance": true
},
"repository": {
"type": "git",
"url": "git+https://github.com/swc-project/swc.git"
},
"bugs": {
"url": "https://github.com/swc-project/swc/issues"
},
"dependencies": {
"@napi-rs/wasm-runtime": "^1.1.6"
}
Comment on lines +44 to +46

@chatgpt-codex-connector chatgpt-codex-connector Bot Jul 22, 2026

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P1 Badge Update the pnpm lockfile for the new workspace

Adding this package under packages/core/scripts/npm/* makes it a workspace importer, and it also introduces @napi-rs/wasm-runtime@^1.1.6, but pnpm-lock.yaml was not updated: the lockfile still lists the existing core npm subpackages and has no packages/core/scripts/npm/wasm32-wasi importer. The release workflow runs pnpm install --frozen-lockfile before building/publishing, so any release tag containing this new package.json will fail during install until the lockfile includes this workspace and dependency resolution.

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}
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