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feat(build)!: migrate to Bun and add standalone binary compilation
BREAKING CHANGES: - Package is now ESM-only (removed CommonJS builds) - Development requires Bun 1.2+ instead of pnpm - Node.js 22+ still supported for runtime consumption Features: - Add standalone binary compilation with Bun's --compile flag - Support for linux-x64, linux-arm64, darwin-x64, darwin-arm64, windows-x64 - Baseline and modern CPU variants (Haswell/AVX2+) - New GitHub workflow for automated binary builds on releases - Binary build script with cross-platform support - Maintain Node.js compatibility with runtime detection for Bun.CryptoHasher Build System: - Replace tsup with Bun.build() for faster builds (~0.6s vs 1.5s) - Simplify package exports to ESM default only - Update all 30+ benchmark scripts to use Bun - Remove pnpm workspace configuration CI/CD: - Update all GitHub workflows to use Bun - Add build-binaries.yml workflow with artifact publishing - Use SHA-pinned GitHub Actions for security - Configure proper permissions and credential handling Development: - Replace pnpm scripts with Bun equivalents - Update Husky hooks for Bun compatibility - Simplify build configuration with fewer dependencies - Maintain compatibility with Node.js 22+ runtime
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‎.changeset/migrate-to-bun.md‎

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---
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"h2m-parser": major
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---
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**BREAKING CHANGES:** Migrate to Bun and add standalone binary compilation
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This release introduces significant infrastructure changes:
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- **ESM-only package**: Removed CommonJS builds. The package now exports only ESM format.
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- **Bun development requirement**: Development now requires Bun 1.2+ instead of pnpm.
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- **Node.js runtime compatibility maintained**: Runtime consumption still supports Node.js 22+.
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**New Features:**
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- Standalone binary compilation using Bun's `--compile` flag
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- Cross-platform support: linux-x64, linux-arm64, darwin-x64, darwin-arm64, windows-x64
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- Baseline and modern CPU variants (Haswell/AVX2+)
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- Automated GitHub workflow for binary builds on releases
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- Runtime detection for Bun.CryptoHasher with Node.js fallback for hash computation
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**Build System:**
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- Replaced tsup with Bun.build() for faster builds (~0.6s vs 1.5s)
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- Simplified package exports to ESM default only
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- Updated all 30+ benchmark scripts to use Bun
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- Removed pnpm workspace configuration

‎.github/workflows/build-binaries.yml‎

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name: Build Binaries
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on:
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release:
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types: [published]
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workflow_dispatch:
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inputs:
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ref:
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description: 'Git ref (tag or branch) to build from'
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required: false
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default: ''
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concurrency:
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group: build-binaries-${{ github.ref }}
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cancel-in-progress: false
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permissions:
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contents: read
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env:
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OUTDIR: dist/bin
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jobs:
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build:
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name: Build Bun binaries
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runs-on: ubuntu-latest
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permissions:
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contents: read
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steps:
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- name: Checkout
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uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
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with:
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persist-credentials: false
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ref: ${{ github.event_name == 'release' && github.event.release.tag_name || inputs.ref || github.ref }}
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- name: Setup Bun
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uses: oven-sh/setup-bun@735343b667d3e6f658f44d0eca948eb6282f2b76 # v2.0.2
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with:
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bun-version: latest
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- name: Install dependencies
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run: bun install --frozen-lockfile
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- name: Verify project
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run: bun run verify
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- name: Build baseline binaries
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run: bun run build:binary --all --outdir "$OUTDIR"
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- name: Build modern binaries
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run: bun run build:binary --all --modern --outdir "$OUTDIR"
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- name: Generate checksums
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run: |
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cd "$OUTDIR"
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sha256sum h2m-* > SHA256SUMS
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- name: Upload artifacts
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uses: actions/upload-artifact@26f96dfa697d77e81fd5907df203aa23a56210a8 # v4.3.0
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with:
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name: h2m-binaries-${{ github.run_id }}
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path: ${{ env.OUTDIR }}/*
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if-no-files-found: error
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publish:
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name: Attach release assets
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runs-on: ubuntu-latest
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if: github.event_name == 'release'
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needs: build
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permissions:
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contents: write
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steps:
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- name: Download artifacts
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uses: actions/download-artifact@65a9edc5881444af0b9093a5e628f2fe47ea3b2e # v4.1.7
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with:
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name: h2m-binaries-${{ github.run_id }}
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path: ${{ env.OUTDIR }}
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- name: List artifacts
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run: ls -R $OUTDIR
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- name: Publish to GitHub Release
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uses: softprops/action-gh-release@62c96d0c4e8a889135c1f3a25910db8dbe0e85f7 # v2.3.4
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with:
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files: ${{ env.OUTDIR }}/*
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env:
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GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

‎.github/workflows/performance-regression.yml‎

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paths:
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- 'src/**'
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- 'package.json'
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- 'pnpm-lock.yaml'
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- 'bun.lock'
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push:
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branches:
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- main
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persist-credentials: false
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lfs: true
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- name: Setup pnpm
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uses: pnpm/action-setup@a7487c7e89a18df4991f7f222e4898a00d66ddda # v4.1.0
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- name: Setup Bun
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uses: oven-sh/setup-bun@v2
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with:
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run_install: false
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- name: Setup Node.js
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uses: actions/setup-node@a0853c24544627f65ddf259abe73b1d18a591444 # v5.0.0
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with:
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node-version: '24'
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bun-version: latest
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- name: Install dependencies
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run: pnpm install --frozen-lockfile
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run: bun install --frozen-lockfile
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- name: Build project
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run: pnpm build
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run: bun build
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- name: Restore main baseline
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run: |
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fetch-depth: 0
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lfs: true
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- name: Setup pnpm
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uses: pnpm/action-setup@a7487c7e89a18df4991f7f222e4898a00d66ddda # v4.1.0
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with:
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run_install: false
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- name: Setup Node.js
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uses: actions/setup-node@a0853c24544627f65ddf259abe73b1d18a591444 # v5.0.0
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- name: Setup Bun
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uses: oven-sh/setup-bun@v2
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with:
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node-version: '24'
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bun-version: latest
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- name: Install dependencies
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run: pnpm install --frozen-lockfile
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run: bun install --frozen-lockfile
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- name: Build project
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run: pnpm build
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run: bun build
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- name: Capture baseline
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run: node bench/capture-baseline.js

‎.github/workflows/release.yml‎

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fetch-depth: 0 # Fetch all history for changesets
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persist-credentials: false
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- name: Setup pnpm
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uses: pnpm/action-setup@a7487c7e89a18df4991f7f222e4898a00d66ddda # v4.1.0
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- name: Setup Bun
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uses: oven-sh/setup-bun@v2
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with:
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bun-version: latest
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- name: Setup Node.js
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uses: actions/setup-node@a0853c24544627f65ddf259abe73b1d18a591444 #v5.0.0
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with:
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node-version: 24
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cache: 'pnpm'
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registry-url: 'https://registry.npmjs.org'
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always-auth: true
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- name: Install dependencies
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run: pnpm install --frozen-lockfile
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run: bun install --frozen-lockfile
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- name: Verify build
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run: |
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pnpm lint
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pnpm typecheck
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pnpm test
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pnpm build
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bun lint
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bun typecheck
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bun test
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bun build
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- name: Create Release Pull Request or Publish
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id: changesets
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uses: changesets/action@e0145edc7d9d8679003495b11f87bd8ef63c0cba #v1.5.3
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with:
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publish: pnpm changeset publish
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version: pnpm changeset version
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publish: bun changeset publish
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version: bun changeset version
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commit: 'chore(release): version packages'
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title: 'chore(release): version packages'
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createGithubReleases: true

‎.github/workflows/test.yml‎

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persist-credentials: false
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lfs: true
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- name: Setup pnpm
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uses: pnpm/action-setup@a7487c7e89a18df4991f7f222e4898a00d66ddda #v4.1.0
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- name: Setup Node.js ${{ matrix.node }}
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uses: actions/setup-node@a0853c24544627f65ddf259abe73b1d18a591444 #v5.0.0
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- name: Setup Bun
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uses: oven-sh/setup-bun@v2
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with:
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node-version: ${{ matrix.node }}
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cache: 'pnpm'
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bun-version: latest
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- name: Install dependencies
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run: pnpm install --frozen-lockfile
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run: bun install --frozen-lockfile
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- name: Lint
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run: pnpm lint
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run: bun lint
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- name: Type check
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run: pnpm typecheck
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run: bun typecheck
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- name: Test
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run: pnpm test
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run: bun test
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- name: Build
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run: pnpm build
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run: bun build

‎.gitignore‎

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node_modules
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.DS_Store
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dist
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dist/bin
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coverage
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bench/output
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bench/artifacts/

‎.husky/pre-commit‎

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pnpm lint-staged
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bun lint-staged

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