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perf(ci): skip frontend CI when nothing it builds changed #391

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Merged
nourshoreibah merged 2 commits into from
Aug 30, 2026
Merged

perf(ci): skip frontend CI when nothing it builds changed #391

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perf(ci): skip frontend CI when nothing it builds changed
nourshoreibah Aug 30, 2026
e335a52
chore: trim comments
nourshoreibah Aug 30, 2026
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35 changes: 35 additions & 0 deletions .github/workflows/frontend-ci.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -11,8 +11,43 @@ concurrency:
cancel-in-progress: true

jobs:
# frontend-ci is a required check: workflow-level `paths:` leaves it pending forever, a skipped job passes.
changes:
name: changes
runs-on: ubuntu-latest
outputs:
frontend: ${{ steps.filter.outputs.frontend }}
steps:
- name: Checkout
uses: actions/checkout@v4
with:
fetch-depth: 0

- name: Detect frontend changes
id: filter
env:
BASE_SHA: ${{ github.event.pull_request.base.sha || github.event.merge_group.base_sha }}
run: |
if [ -z "$BASE_SHA" ] || ! git cat-file -e "$BASE_SHA^{commit}" 2>/dev/null; then
echo "frontend=true" >> "$GITHUB_OUTPUT"
exit 0
fi

changed=$(git diff --name-only "$BASE_SHA" HEAD | grep -E \
'^(apps/frontend/|shared/|\.github/actions/build-shared-packages/|\.github/workflows/frontend-ci\.yml$)' || true)

if [ -n "$changed" ]; then
echo "frontend=true" >> "$GITHUB_OUTPUT"
echo "$changed" | sed 's/^/changed: /'
else
echo "frontend=false" >> "$GITHUB_OUTPUT"
echo "No frontend-relevant changes."
fi

frontend-ci:
name: frontend-ci
needs: changes
if: needs.changes.outputs.frontend == 'true'
runs-on: ubuntu-latest
defaults:
run:
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