Add Benchmark Debug workflow (#4185)

.github/workflows/ci.yml

@@ -3,6 +3,17 @@ name: CI
 on:
   workflow_dispatch:
   workflow_call:
+    inputs:
+      ref:
+        description: 'Branch or tag ref to check out'
+        type: string
+        required: false
+        default: 'main'
+      artifact_name:
+        description: 'Name of the artifact to upload'
+        type: string
+        required: false
+        default: 'npm-package'
   pull_request:
     branches:
       - '**'
@@ -17,6 +28,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
+        with:
+          ref: ${{ inputs.ref || '' }}
       - uses: actions/setup-node@v4
         with:
           node-version-file: 'package.json'
@@ -44,5 +57,5 @@ jobs:
       - name: Upload npm package
         uses: actions/upload-artifact@v3
         with:
-          name: npm-package
+          name: ${{ inputs.artifact_name || 'npm-package' }}
           path: preact.tgz

.github/workflows/single-bench.yml

@@ -0,0 +1,89 @@
+name: Benchmark Debug
+
+on:
+  workflow_dispatch:
+    inputs:
+      benchmark:
+        description: 'Which benchmark to run'
+        type: choice
+        options:
+          - 02_replace1k
+          - 03_update10k
+          - 07_create10k
+          - filter_list
+          - hydrate1k
+          - many_updates
+          - text_update
+          - todo
+        required: true
+      base:
+        description: 'The branch name, tag, or commit sha of the version of preact to benchmark against.'
+        type: string
+        default: main
+        required: false
+      trace:
+        description: 'Whether to capture browser traces for this benchmark run'
+        type: boolean
+        default: true
+        required: false
+      timeout:
+        description: 'How many minutes to give the benchmark to run before timing out and failing'
+        type: number
+        default: 20
+        required: false
+
+jobs:
+  build_local:
+    name: Build local package
+    uses: ./.github/workflows/ci.yml
+
+  build_base:
+    name: Build base package
+    uses: ./.github/workflows/ci.yml
+    with:
+      ref: ${{ inputs.base }}
+      artifact_name: base-npm-package
+
+  prepare:
+    name: Prepare environment
+    runs-on: ubuntu-latest
+    needs:
+      - build_local
+      - build_base
+    timeout-minutes: 5
+    steps:
+      - name: Download locally built preact package
+        uses: actions/download-artifact@v3
+        with:
+          name: npm-package
+      - run: mv preact.tgz preact-local.tgz
+      - name: Clear working directory
+        run: |
+          ls -al
+          rm -rf *
+          echo "===================="
+          ls -al
+      - name: Upload locally built preact package
+        uses: actions/upload-artifact@v3
+        with:
+          name: bench-environment
+          path: preact-local.tgz
+      - name: Download base package
+        uses: actions/download-artifact@v3
+        with:
+          name: base-npm-package
+      - run: mv preact.tgz preact-main.tgz
+      - name: Upload base preact package
+        uses: actions/upload-artifact@v3
+        with:
+          name: bench-environment
+          path: preact-main.tgz
+
+  benchmark:
+    name: Bench ${{ inputs.benchmark}}
+    uses: ./.github/workflows/run-bench.yml
+    needs: prepare
+    with:
+      benchmark: ${{ inputs.benchmark}}
+      timeout: ${{ inputs.timeout }}
+      trace: ${{ inputs.trace }}