[chore] Switch from Yarn to Bun

.gitattributes

@@ -1,5 +1,3 @@
 * text eol=lf
 *.png binary
 *.jpg binary
-
-**/yarn.lock linguist-generated

.github/actions/setup-mise/action.yml

@@ -0,0 +1,11 @@
+name: setup-mise
+description: Install tools via mise
+
+runs:
+  using: "composite"
+  steps:
+    - uses: jdx/mise-action@146a28175021df8ca24f8ee1828cc2a60f980bd5 # v3.5.1
+      with:
+        install: true
+        cache: true
+        experimental: true

.github/workflows/build-and-deploy-worker.yml

@@ -25,7 +25,7 @@ jobs:
     steps:
       - uses: actions/checkout@08eba0b27e820071cde6df949e0beb9ba4906955 # v4
 
-      - uses: jdx/mise-action@146a28175021df8ca24f8ee1828cc2a60f980bd5 # v3.5.1
+      - uses: ./.github/actions/setup-mise
 
       - uses: ./.github/internal-actions/setup-gcloud
 

.github/workflows/release.yml

@@ -30,20 +30,18 @@ jobs:
       contents: write
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-node@v4
-        with:
-          node-version: 22
-      - run: yarn install --frozen-lockfile --check-files
-      - run: yarn build
+      - uses: ./.github/actions/setup-mise
+      - run: bun install --frozen-lockfile
+      - run: bun run build
       - name: Ensure GraphQL schema and generated code is up-to-date
         working-directory: ${{ github.workspace }}/packages/eas-cli
         run: |
-          yarn verify-graphql-code
+          bun run verify-graphql-code
       - name: Build tarballs
         working-directory: ${{ github.workspace }}/packages/eas-cli
         run: |
-          yarn pretarball-ci
-          yarn oclif pack:tarballs --no-xz --targets linux-x64,linux-arm
+          bun run pretarball-ci
+          bunx oclif pack:tarballs --no-xz --targets linux-x64,linux-arm
       - id: x64
         run: echo "filename=$(ls eas-*-x64.tar.gz)" >> $GITHUB_OUTPUT
         working-directory: ${{ github.workspace }}/packages/eas-cli/dist
@@ -77,19 +75,17 @@ jobs:
       contents: write
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-node@v4
-        with:
-          node-version: 22
+      - uses: ./.github/actions/setup-mise
       - run: brew install python-setuptools
         env:
           HOMEBREW_NO_AUTO_UPDATE: 1
-      - run: yarn install --frozen-lockfile --check-files
-      - run: yarn build
+      - run: bun install --frozen-lockfile
+      - run: bun run build
       - name: Build tarballs
         working-directory: ${{ github.workspace }}/packages/eas-cli
         run: |
-          yarn pretarball-ci
-          yarn oclif pack:tarballs --no-xz --targets darwin-x64,darwin-arm64
+          bun run pretarball-ci
+          bunx oclif pack:tarballs --no-xz --targets darwin-x64,darwin-arm64
       - id: x64
         run: echo "filename=$(ls eas-*-x64.tar.gz)" >> $GITHUB_OUTPUT
         working-directory: ${{ github.workspace }}/packages/eas-cli/dist
@@ -122,15 +118,13 @@ jobs:
       contents: write
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-node@v4
-        with:
-          node-version: 22
-      - run: yarn install --frozen-lockfile --check-files
+      - uses: ./.github/actions/setup-mise
+      - run: bun install --frozen-lockfile
       - run: sudo apt-get install nsis
-      - run: yarn build
+      - run: bun run build
       - run: |
-          yarn pretarball-ci
-          yarn oclif pack:win
+          bun run pretarball-ci
+          bunx oclif pack:win
         working-directory: ${{ github.workspace }}/packages/eas-cli
       - id: x64
         run: echo "filename=$(ls eas-*-x64.exe)" >> $GITHUB_OUTPUT
@@ -164,17 +158,13 @@ jobs:
       id-token: write
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-node@v4
-        with:
-          registry-url: 'https://registry.npmjs.org/'
-          scope: 'expo'
-          node-version: 22
+      - uses: ./.github/actions/setup-mise
       - name: Install dependencies
-        run: yarn install --frozen-lockfile --check-files
+        run: bun install --frozen-lockfile
       - name: Build
-        run: yarn build
+        run: bun run build
       - name: Publish packages to npm
-        run: yarn lerna publish from-package --yes --no-verify-access
+        run: bunx lerna publish from-package --yes --no-verify-access
       - name: Add latest-eas-build-staging tag
         env:
           NODE_AUTH_TOKEN: ${{ secrets.NPM_ACCESS_TOKEN }}
@@ -199,17 +189,15 @@ jobs:
       - uses: actions/checkout@v4
         with:
           token: ${{ secrets.EXPO_BOT_PAT }}
-      - uses: actions/setup-node@v4
-        with:
-          node-version: 22
+      - uses: ./.github/actions/setup-mise
       - name: Install dependencies
         working-directory: ./scripts
-        run: yarn install --frozen-lockfile --check-files
+        run: bun install --frozen-lockfile
       - name: Resolve version
         run: echo "EAS_CLI_VERSION=${GITHUB_REF#refs/tags/v}" >> $GITHUB_ENV
       - name: Update changelog
         working-directory: ./scripts
-        run: yarn --silent release-changelog $EAS_CLI_VERSION > /tmp/current-changelog
+        run: bun run release-changelog $EAS_CLI_VERSION > /tmp/current-changelog
       - name: Publish release
         run: gh release edit v$EAS_CLI_VERSION --draft=false -F /tmp/current-changelog
         env:

.github/workflows/size.yml

@@ -10,9 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
-      - uses: actions/setup-node@v2
-        with:
-          node-version: 20
+      - uses: ./.github/actions/setup-mise
       - uses: preactjs/compressed-size-action@v2
         with:
           build-script: 'build:tarballs:linux'

.github/workflows/test-graphql.yml

@@ -18,10 +18,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
-      - name: Setup node
-        uses: actions/setup-node@v2
-        with:
-          node-version: 22
-      - run: yarn install --frozen-lockfile
-      - run: yarn verify-graphql-code
+      - name: Setup tools
+        uses: ./.github/actions/setup-mise
+      - run: bun install --frozen-lockfile
+      - run: bun run verify-graphql-code
         working-directory: packages/eas-cli

.github/workflows/test-scripts.yml

@@ -22,9 +22,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
-      - name: Setup node
-        uses: actions/setup-node@v2
-        with:
-          node-version: 20
-      - run: yarn install --frozen-lockfile --check-files
-      - run: yarn typecheck
+      - name: Setup tools
+        uses: ./.github/actions/setup-mise
+      - run: bun install --frozen-lockfile
+      - run: bun run typecheck

.github/workflows/test.yml

@@ -26,8 +26,13 @@ jobs:
         uses: actions/setup-node@v2
         with:
           node-version: ${{ matrix.node }}
-      - run: yarn install --frozen-lockfile --check-files
-      - run: yarn typecheck
+      - uses: jdx/mise-action@146a28175021df8ca24f8ee1828cc2a60f980bd5 # v3.5.1
+        with:
+          install: false
+      - name: Install Bun via mise
+        run: mise install bun
+      - run: bun install --frozen-lockfile
+      - run: bun run typecheck
       - run: |
           git config --global user.email "tester@expo.dev"
           git config --global user.name "Test"
@@ -38,31 +43,31 @@ jobs:
       - name: Run tests (affected)
         # PRs: only run tests for changed packages + dependents.
         if: ${{ !matrix.coverage && github.event_name == 'pull_request' }}
-        run: yarn lerna run test --since ${{ github.event.pull_request.base.sha }} --include-dependents
+        run: bun run test -- --since ${{ github.event.pull_request.base.sha }} --include-dependents
         env:
           NODE_OPTIONS: --max-old-space-size=8192
       - name: Run tests (all)
         # Pushes to main: run all package tests.
         if: ${{ !matrix.coverage && github.event_name == 'push' }}
-        run: yarn lerna run test
+        run: bun run test
         env:
           NODE_OPTIONS: --max-old-space-size=8192
       - name: Run tests (coverage)
         # Coverage on PRs and main; per-package reports are uploaded to Codecov.
         if: ${{ matrix.coverage }}
-        run: yarn lerna run test -- -- --coverage
+        run: bun run test -- -- --coverage
         env:
           # Oclif seems to cause OOM errors when testing with coverage enabled.
           # Remove this whenever we solved those OOM errors.
           NODE_OPTIONS: --max-old-space-size=8192
-      - run: yarn lint --max-warnings=0
-      - run: yarn install --frozen-lockfile --check-files
+      - run: bun run lint -- --max-warnings=0
+      - run: bun install --frozen-lockfile
         working-directory: ./scripts
       - uses: codecov/codecov-action@v1
         if: ${{ matrix.coverage }}
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
-      - run: yarn lint-changelog
+      - run: bun run lint-changelog
 
   notify-slack:
     runs-on: ubuntu-latest

.github/workflows/trigger-release.yml

@@ -27,22 +27,20 @@ jobs:
           ref: main
           fetch-depth: 0
           token: ${{ secrets.EXPO_BOT_PAT }}
-      - uses: actions/setup-node@v4
-        with:
-          node-version: 22
+      - uses: ./.github/actions/setup-mise
       - run: |
           # Lerna will not detect changes correctly without having all tags
           git fetch --depth=1 origin +refs/tags/*:refs/tags/*
           # Checkout the main branch
           git checkout main
           git config --global user.email "support+ci@expo.io"
           git config --global user.name "Expo CI"
-          yarn install --frozen-lockfile --check-files
-          yarn build
+          bun install --frozen-lockfile
+          bun run build
           if [[ "$INPUT_VERSION" == "" ]]; then
             echo "Releasing with default version"
-            yarn release
+            bun run release
           else
             echo "Releasing with version $INPUT_VERSION"
-            yarn release $INPUT_VERSION
+            bun run release $INPUT_VERSION
           fi

.github/workflows/worker-system-tests.yml

@@ -13,7 +13,7 @@ jobs:
     steps:
       - uses: actions/checkout@08eba0b27e820071cde6df949e0beb9ba4906955 # v4
 
-      - uses: jdx/mise-action@146a28175021df8ca24f8ee1828cc2a60f980bd5 # v3.5.1
+      - uses: ./.github/actions/setup-mise
 
       - name: Create test app
         run: npx -y create-expo-app@latest ${{ runner.temp }}/test-app --template tabs

.github/workflows/worker.yml

@@ -14,7 +14,7 @@ on:
       - "packages/turtle-spawn/**"
       - .github/workflows/worker.yml
       - .github/workflows/build-and-deploy-worker.yml
-      - yarn.lock
+      - bun.lock
 
 concurrency:
   group: worker-${{ github.ref }}-${{ github.event_name }}
@@ -26,19 +26,19 @@ jobs:
     steps:
       - uses: actions/checkout@08eba0b27e820071cde6df949e0beb9ba4906955 # v4
 
-      - uses: jdx/mise-action@146a28175021df8ca24f8ee1828cc2a60f980bd5 # v3.5.1
+      - uses: ./.github/actions/setup-mise
 
-      - run: yarn install --frozen-lockfile --check-files
+      - run: bun install --frozen-lockfile
 
-      - run: yarn typecheck
+      - run: bun run typecheck
 
       - name: Run unit tests
         working-directory: packages/worker
-        run: yarn test:unit
+        run: bun run test:unit
 
       - name: Run integration tests
         working-directory: packages/worker
-        run: yarn test:integration
+        run: bun run test:integration
 
   worker-build:
     needs:

.yarnrc

@@ -1 +0,0 @@
-save-prefix ""

AGENTS.md

@@ -2,5 +2,7 @@
 
 When working with this repository follow instructions from CLAUDE.md.
 
+Use Bun for installs and scripts unless a command explicitly requires a different tool.
+
 - [./CLAUDE.md](./CLAUDE.md)