ci: resolve statsDir + move checkout earlier

Author: danielroe

.github/workflows/size-comment.yml

@@ -19,24 +19,18 @@ jobs:
         with:
           node-version: latest
 
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
+        with:
+          sparse-checkout: scripts/parse-sizes.ts
+          sparse-checkout-cone-mode: false
+
       - name: ⏬ Download artifacts from workflow run
         uses: actions/download-artifact@v4
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
           run-id: ${{ github.event.workflow_run.id }}
           path: .
 
-      - name: 🔍 Debug downloaded artifacts
-        run: |
-          echo "=== Downloaded artifacts structure ==="
-          ls -la
-          echo "=== head-stats contents ==="
-          ls -la head-stats/ || echo "head-stats not found"
-          echo "=== base-stats contents ==="
-          ls -la base-stats/ || echo "base-stats not found"
-          echo "=== pr-number contents ==="
-          ls -la pr-number/ || echo "pr-number not found"
-
       - name: 🔍 Get PR number from artifact
         id: pr
         run: |
@@ -49,11 +43,6 @@ jobs:
             echo "result=" >> $GITHUB_OUTPUT
           fi
 
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
-        with:
-          sparse-checkout: scripts/parse-sizes.ts
-          sparse-checkout-cone-mode: false
-
       - name: 📊 Generate size comparison
         id: sizes
         run: |

scripts/parse-sizes.ts

@@ -1,5 +1,6 @@
 import { readFileSync } from 'node:fs'
 import process from 'node:process'
+import { fileURLToPath } from 'node:url'
 
 interface RollupStatsNode {
   renderedLength?: number
@@ -103,7 +104,7 @@ function comparePackage(name: string, headPath: string, basePath: string): Packa
 /**
  * Generate markdown comment for size comparison
  */
-export function generateSizeComment(packages: string[], statsDir = '.'): string {
+export function generateSizeComment(packages: string[], statsDir = process.cwd()): string {
   let commentBody = '## 📦 Bundle Size Comparison\n\n'
 
   for (const pkg of packages) {
@@ -151,6 +152,7 @@ if (isMainModule) {
     process.exit(1)
   }
 
-  const comment = generateSizeComment(packages)
+  const rootDir = fileURLToPath(new URL('..', import.meta.url))
+  const comment = generateSizeComment(packages, rootDir)
   console.log(comment)
 }