chore: upload posthog-js dist to S3 on release

.github/scripts/upload-posthog-js-s3.sh

@@ -0,0 +1,62 @@
+#!/usr/bin/env bash
+#
+# Upload posthog-js dist artifacts to S3 and append the version to versions.json.
+#
+# Usage:
+#   VERSION=1.365.0 ./upload-posthog-js-s3.sh <bucket>
+#
+# VERSION must be set as an environment variable (not an argument) to avoid
+# shell injection if the value were ever attacker-influenced.
+#
+# Expects AWS credentials to be configured before invocation.
+#
+set -euo pipefail
+
+BUCKET="${1:?Usage: VERSION=x.y.z $0 <bucket>}"
+DIST_DIR="packages/browser/dist"
+
+if [[ -z "${VERSION:-}" ]]; then
+    echo "ERROR: VERSION environment variable is required" >&2
+    exit 1
+fi
+
+# Validate version is strict semver (e.g. 1.365.0 or 1.365.0-beta.1).
+# Prevents path traversal — no slashes, dots only in expected positions.
+if [[ ! "$VERSION" =~ ^[0-9]+\.[0-9]+\.[0-9]+([-][a-zA-Z0-9.]+)?$ ]]; then
+    echo "ERROR: Invalid version format: '$VERSION'" >&2
+    exit 1
+fi
+
+echo "==> Uploading posthog-js v$VERSION to s3://$BUCKET/$VERSION/"
+aws s3 cp "$DIST_DIR/" "s3://$BUCKET/$VERSION/" \
+    --recursive \
+    --exclude "*" \
+    --include "*.js" \
+    --cache-control "public, max-age=31536000, immutable" \
+    --content-type "application/javascript"
+
+echo "==> Updating versions.json in s3://$BUCKET/"
+TMPDIR="$(mktemp -d)"
+trap 'rm -rf "$TMPDIR"' EXIT
+
+# Distinguish "file doesn't exist" from real errors (auth, network).
+# A blind fallback to '[]' on any error would silently drop all previous versions.
+if aws s3 cp "s3://$BUCKET/versions.json" "$TMPDIR/versions.json"; then
+    echo "Downloaded existing versions.json"
+elif aws s3api head-object --bucket "$BUCKET" --key "versions.json" 2>/dev/null; then
+    echo "ERROR: versions.json exists but could not be downloaded" >&2
+    exit 1
+else
+    echo "No existing versions.json found, starting fresh"
+    echo '[]' > "$TMPDIR/versions.json"
+fi
+
+if jq -e --arg v "$VERSION" '.[] | select(.version == $v)' "$TMPDIR/versions.json" > /dev/null 2>&1; then
+    echo "Version $VERSION already in versions.json, skipping"
+else
+    jq --arg v "$VERSION" --arg ts "$(date -u +%Y-%m-%dT%H:%M:%SZ)" \
+        '. + [{"version": $v, "timestamp": $ts}]' "$TMPDIR/versions.json" > "$TMPDIR/versions_updated.json"
+    aws s3 cp "$TMPDIR/versions_updated.json" "s3://$BUCKET/versions.json" \
+        --content-type "application/json"
+    echo "Added v$VERSION to versions.json"
+fi

.github/workflows/release.yml

@@ -334,11 +334,107 @@ jobs:
                   message: '❌ Failed to release `${{ matrix.package.name }}@v${{ steps.check-package-version.outputs.committed-version }}`! <https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}|View logs>'
                   emoji_reaction: 'x'
 
+    build-s3-artifacts:
+        name: Build posthog-js dist for S3
+        needs: [version-bump, publish, notify-approval-needed]
+        runs-on: ubuntu-latest
+        # Run as long as the version bump committed — even if some matrix publishes failed,
+        # posthog-js might have succeeded and we still want the artifacts in S3.
+        if: always() && needs.version-bump.outputs.commit-hash != ''
+        permissions:
+            contents: read
+        outputs:
+            is-new-version: ${{ steps.check-version.outputs.is-new-version }}
+            committed-version: ${{ steps.check-version.outputs.committed-version }}
+        steps:
+            - name: Checkout repository
+              uses: actions/checkout@v6
+              with:
+                  ref: ${{ needs.version-bump.outputs.commit-hash }}
+                  fetch-depth: 0
+
+            - name: Check posthog-js version
+              id: check-version
+              uses: PostHog/check-package-version@v2.1.0
+              with:
+                  path: packages/browser
+
+            - name: Setup environment
+              if: steps.check-version.outputs.is-new-version == 'true'
+              uses: ./.github/actions/setup
+
+            - name: Upload dist artifact
+              if: steps.check-version.outputs.is-new-version == 'true'
+              uses: actions/upload-artifact@v4
+              with:
+                  name: posthog-js-dist
+                  path: packages/browser/dist/*.js
+                  retention-days: 1
+                  if-no-files-found: error
+
+    upload-s3:
+        name: Upload posthog-js dist to S3
+        needs: [build-s3-artifacts, version-bump, notify-approval-needed]
+        runs-on: ubuntu-latest
+        if: always() && needs.build-s3-artifacts.outputs.is-new-version == 'true'
+        environment: 'S3 Upload' # For OIDC credential scoping only — no required reviewers (single approval at NPM Release)
+        permissions:
+            contents: read
+            id-token: write
+        steps:
+            # Sparse checkout: only the upload script — no pnpm install/build runs here.
+            - name: Checkout upload script
+              uses: actions/checkout@v6
+              with:
+                  ref: ${{ needs.version-bump.outputs.commit-hash }}
+                  sparse-checkout: .github/scripts
+
+            - name: Download dist artifact
+              uses: actions/download-artifact@v4
+              with:
+                  name: posthog-js-dist
+                  path: packages/browser/dist
+
+            # Upload to US (us-east-1)
+            - name: Configure AWS credentials (US)
+              uses: aws-actions/configure-aws-credentials@8df5847569e6427dd6c4fb1cf565c83acfa8afa7 # v6
+              with:
+                  role-to-assume: ${{ vars.AWS_S3_UPLOAD_ROLE_ARN_US }}
+                  aws-region: us-east-1
+
+            - name: Upload dist and update manifest (US)
+              env:
+                  VERSION: ${{ needs.build-s3-artifacts.outputs.committed-version }}
+              run: .github/scripts/upload-posthog-js-s3.sh posthog-js-prod-us
+
+            # Upload to EU (eu-central-1)
+            - name: Configure AWS credentials (EU)
+              uses: aws-actions/configure-aws-credentials@8df5847569e6427dd6c4fb1cf565c83acfa8afa7 # v6
+              with:
+                  role-to-assume: ${{ vars.AWS_S3_UPLOAD_ROLE_ARN_EU }}
+                  aws-region: eu-central-1
+
+            - name: Upload dist and update manifest (EU)
+              env:
+                  VERSION: ${{ needs.build-s3-artifacts.outputs.committed-version }}
+              run: .github/scripts/upload-posthog-js-s3.sh posthog-js-prod-eu
+
+            - name: Notify Slack - S3 Upload Failed
+              continue-on-error: true
+              if: ${{ failure() && needs.notify-approval-needed.outputs.slack_ts != '' }}
+              uses: PostHog/.github/.github/actions/slack-thread-reply@main
+              with:
+                  slack_bot_token: ${{ secrets.SLACK_CLIENT_LIBRARIES_BOT_TOKEN }}
+                  slack_channel_id: ${{ vars.SLACK_APPROVALS_CLIENT_LIBRARIES_CHANNEL_ID }}
+                  thread_ts: ${{ needs.notify-approval-needed.outputs.slack_ts }}
+                  message: '❌ Failed to upload posthog-js v${{ needs.build-s3-artifacts.outputs.committed-version }} dist to S3! <https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}|View logs>'
+                  emoji_reaction: 'x'
+
     notify-released:
         name: Notify Slack - Released
-        needs: [notify-approval-needed, publish]
+        needs: [notify-approval-needed, publish, upload-s3]
         runs-on: ubuntu-latest
-        if: always() && needs.publish.result == 'success' && needs.notify-approval-needed.outputs.slack_ts != ''
+        if: always() && needs.publish.result == 'success' && needs.upload-s3.result == 'success' && needs.notify-approval-needed.outputs.slack_ts != ''
         steps:
             - name: Checkout repository
               uses: actions/checkout@v6