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‎.github/workflows/create_release.yaml‎

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name: Create Release
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run-name: Create ${{ inputs.release_type }} release
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on:
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workflow_dispatch:
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inputs:
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release_type:
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type: choice
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description: 'Select the release type'
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options:
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- patch
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- minor
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- major
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required: true
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permissions:
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contents: write # Required for committing version bump
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jobs:
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release:
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runs-on: ubuntu-latest
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steps:
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- name: Checkout repository
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uses: actions/checkout@v4
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with:
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fetch-depth: 0
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- name: Set up Node.js
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uses: actions/setup-node@v4
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with:
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node-version-file: 'package.json'
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- name: Install dependencies
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run: npm ci
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- name: Verify lint and testing
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run: tsc --noEmit && npm run lint && npm run test
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- name: Configure github-actions user
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run: |
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git config --global user.name "github-actions[bot]"
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git config --global user.email "41898282+github-actions[bot]@users.noreply.github.com"
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- name: Bump version in package.json
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id: version_bump
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run: |
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VERSION=$(npm version ${{ inputs.release_type }} -m "v%s")
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echo "VERSION=$VERSION" >> $GITHUB_ENV
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- name: Push version bump and tag
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run: |
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git push origin main
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git push origin $VERSION
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- name: Create GitHub Release
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uses: softprops/action-gh-release@v2
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with:
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name: "Release ${{ env.VERSION }}"
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draft: true
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generate_release_notes: true
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tag_name: ${{ env.VERSION }}
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env:
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GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

‎.github/workflows/publish.yaml‎

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name: Publish to npm
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run-name: ${{ github.ref_name }} ${{ inputs.dry_run == true && ' (dry-run)' || '' }}
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on:
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workflow_dispatch:
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inputs:
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dry_run:
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type: boolean
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description: Run as a dry-run (no publish)
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default: true
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permissions:
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id-token: write # Required for --provenancepermissions:
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contents: read
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packages: write
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jobs:
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publish:
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runs-on: ubuntu-latest
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steps:
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- run: |
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if [[ "${{ github.ref }}" != refs/tags/* ]]; then
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echo "This workflow can only be run from a tag."
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exit 1
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fi
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- name: Checkout repository
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uses: actions/checkout@v4
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- name: Set up Node.js
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uses: actions/setup-node@v4
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with:
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node-version-file: 'package.json'
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registry-url: 'https://registry.npmjs.org'
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- name: Install dependencies
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run: npm ci
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- name: Build package
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run: npm run build
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- name: Extract dist tag from version
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id: dist_tag
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run: echo "value=$(cat package.json | jq -r '.version | split("-") | .[1] // "latest" | split(".") | .[0]')" >> $GITHUB_OUTPUT
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- name: Dry run publish (${{ steps.dist_tag.outputs.value }})
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run: npm publish --dry-run --provenance --tag ${{ steps.dist_tag.outputs.value }} --access=public
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if: inputs.dry_run == true
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- name: Publish to npm
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run: npm publish --provenance --tag ${{ steps.dist_tag.outputs.value }} --access=public
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if: inputs.dry_run == false
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env:
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NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}

‎.gitignore‎

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# Logs
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logs
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*.log
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npm-debug.log*
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yarn-debug.log*
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yarn-error.log*
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lerna-debug.log*
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.pnpm-debug.log*
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# Diagnostic reports (https://nodejs.org/api/report.html)
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report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json
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# Runtime data
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pids
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*.pid
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*.seed
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*.pid.lock
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# Directory for instrumented libs generated by jscoverage/JSCover
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lib-cov
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# Coverage directory used by tools like istanbul
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coverage
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*.lcov
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# nyc test coverage
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.nyc_output
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# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
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.grunt
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# Bower dependency directory (https://bower.io/)
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bower_components
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# node-waf configuration
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.lock-wscript
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# Compiled binary addons (https://nodejs.org/api/addons.html)
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build/Release
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# Dependency directories
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node_modules/
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jspm_packages/
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# Snowpack dependency directory (https://snowpack.dev/)
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web_modules/
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# TypeScript cache
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*.tsbuildinfo
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# Optional npm cache directory
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.npm
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# Optional eslint cache
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.eslintcache
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# Optional stylelint cache
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.stylelintcache
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# Microbundle cache
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.rpt2_cache/
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.rts2_cache_cjs/
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.rts2_cache_es/
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.rts2_cache_umd/
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# Optional REPL history
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.node_repl_history
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# Output of 'npm pack'
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*.tgz
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# Yarn Integrity file
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.yarn-integrity
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# dotenv environment variable files
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.env
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.env.development.local
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.env.test.local
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.env.production.local
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.env.local
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# parcel-bundler cache (https://parceljs.org/)
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.cache
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.parcel-cache
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# Next.js build output
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.next
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out
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# Nuxt.js build / generate output
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.nuxt
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dist
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# Gatsby files
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.cache/
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# Comment in the public line in if your project uses Gatsby and not Next.js
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# https://nextjs.org/blog/next-9-1#public-directory-support
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# public
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# vuepress build output
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.vuepress/dist
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# vuepress v2.x temp and cache directory
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.temp
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.cache
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# vitepress build output
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**/.vitepress/dist
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# vitepress cache directory
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**/.vitepress/cache
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# Docusaurus cache and generated files
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.docusaurus
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# Serverless directories
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.serverless/
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# FuseBox cache
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.fusebox/
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# DynamoDB Local files
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.dynamodb/
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# TernJS port file
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.tern-port
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# Stores VSCode versions used for testing VSCode extensions
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.vscode-test
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# yarn v2
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.yarn/cache
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.yarn/unplugged
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.yarn/build-state.yml
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.yarn/install-state.gz
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.pnp.*
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lib
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.vscode

‎LICENSE‎

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Copyright (c) 2025 Víctor Cruz
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Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

‎README.md‎

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# @sandboxed/diff
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A **zero dependency, high-performance, security-conscious** JavaScript diffing library for comparing complex data structures with ease.
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## Features
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- ⚡️ **Zero dependencies** – lightweight and no external libraries required
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- 📝 Detects **additions, deletions, and modifications**
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- 💡 Supports **Primitives, Objects, Arrays, Maps, and Sets**
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- 🔄 **Handles circular references** safely
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- 🛠️ **Highly configurable** to fit different use cases
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- 🚨 **Built with security in mind** to prevent prototype pollution and other risks
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- 💻 Works in both **Node.js and browser environments**
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## Installation
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```
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npm install @sandboxed/diff
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yarn add @sandboxed/diff
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```
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### Supports `esm` and `cjs`
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Works with both ESM (`import`) and CJS (`require`). Use the syntax that matches your environment:
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```javascript
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// ESM
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import diff, { ChangeType } from '@sandboxed/diff';
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// CJS option 1
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const diff = require('@sandboxed/diff').default;
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const { ChangeType } = require('@sandboxed/diff');
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// CJS option 2
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const { default: diff, ChangeType } = require('@sandboxed/diff');
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```
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## Usage
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#### `diff(lhs: any, rhs: any, config?: DiffConfig): Diff`
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```javascript
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import diff, { ChangeType } from '@sandboxed/diff';
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const a = { name: "Alice", age: 25 };
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const b = { name: "Alice", age: 26, city: "New York" };
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const result = diff(a, b);
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console.log(result);
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console.log(result.toDiffString());
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console.log(result.equal); // false
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```
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**Output**:
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```javascript
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[
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{ type: 'noop', str: '{', depth: 0, path: [] },
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{
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type: 'noop',
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str: '"name": "Alice",',
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depth: 1,
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path: [ 'name', { deleted: false, value: 'Alice' } ]
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},
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{
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type: 'remove',
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str: '"age": 25,',
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depth: 1,
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path: [ 'age', { deleted: true, value: 25 } ]
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},
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{
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type: 'update',
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str: '"age": 26,',
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depth: 1,
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path: [ 'age', { deleted: false, value: 26 } ]
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},
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{
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type: 'add',
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str: '"city": "New York",',
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depth: 1,
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path: [ 'city', { deleted: false, value: 'New York' } ]
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},
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{ type: 'noop', str: '}', depth: 0, path: [] }
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]
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// ---
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{
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"name": "Alice",
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- "age": 25,
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! "age": 26,
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+ "city": "New York",
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}
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```
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## Config
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| option | Description |
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|-|-|
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|[config.include](/docs/config.md#include-changetype--changetype)| Include only these change types from the diff result. Can be combined with `exclude`. |
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|[config.exclude](/docs/config.md#exclude-changetype--changetype)| Excludes the change types from the diff result. Can be combined with `include`. |
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|[config.strict](/docs/config.md#strict-boolean)| Performs loose type check if disabled. |
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|[config.showUpdatedOnly](/docs/config.md#showupdatedonly-boolean)| `@sandboxed/diff` creates a `ChangeType.REMOVE` entry for every `ChangeType.UPDATE`. This flags prevents this behavior. |
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|[config.pathHints](/docs/config.md#pathhints-pathints)| Hashmap of `map` and `set` path hints. These strings will be used in the `path` array to provide a hit about the object's type. |
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|[config.redactKeys](/docs/config.md#redactkeys-arraystring)| List of keys that should be redacted from the output. Works with `string` based keys and serialized `Symbol`. |
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|[config.maxDepth](/docs/config.md#maxdepth-number)| Max depth that the diffing function can traverse. |
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|[config.maxKeys](/docs/config.md#maxkeys-number)| Max keys the diffing function can traverse. |
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|[config.timeout](/docs/config.md#timeout-number)| Milliseconds before throwing a timeout error. |
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## Utils
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| util | Description |
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|-|-|
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|[toDiffString](/docs/utils.md#diff-string-output)| Generates the diff string representation of the diff result. |
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|[equal](/docs/utils.md#equality-detection)| Determines whether the inputs are structurally equal based on the diff result. |
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## Motivation
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Many diffing libraries are optimized for either structured output or human-readable text, but rarely both. `@sandboxed/diff` is designed to provide a structured diff result along with a utility to generate a string representation, making it easy to use in both programmatic logic and UI rendering.
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Trade-off: It may be **slower than other libraries**, but if you prioritize structured diffs with a built-in string representation, `@sandboxed/diff` is a great fit.
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## LICENSE
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[MIT](LICENSE)

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