ci: setup action.yaml validation

.github/workflows/ci.yml

@@ -62,3 +62,12 @@ jobs:
           path: |
             dist/
             action.yaml
+
+  validate-action-yaml:
+    runs-on: ubuntu-latest
+    timeout-minutes: 1
+    steps:
+      - uses: actions/checkout@v4
+      - uses: oven-sh/setup-bun@v2
+      - run: bun install
+      - run: bun scripts/validate-yaml.ts

package.json

@@ -35,6 +35,7 @@
     "@biomejs/biome": "^1.8.3",
     "esbuild": "^0.23.1",
     "vitest": "^2.0.5",
-    "typescript": "^5.5.4"
+    "typescript": "^5.5.4",
+    "yaml": "^2.5.0"
   }
 }

scripts/validate-yaml.ts

@@ -0,0 +1,30 @@
+import YAML from 'yaml';
+import fs from 'node:fs';
+
+const actionYaml = YAML.parse(fs.readFileSync("action.yaml", "utf-8"));
+
+const inputKeys = Object.keys(actionYaml.inputs)
+const envKeys = new Set<string>();
+actionYaml.runs.steps.forEach((step: any) => {
+    if (step.name !== "Compare with base branch bundle") return;
+    Object.keys(step.env).forEach((key: string) => {
+        envKeys.add(key.replace(/^INPUT_/, "").toLowerCase())
+    })
+})
+if (envKeys.size === 0) {
+    throw new Error("No environment variables found. Did you forget to add `env` to the step?")
+}
+
+const missingKeys = inputKeys.filter((key: string) => !envKeys.has(key))
+if (missingKeys.length > 0) {
+    const s = missingKeys.map((key: string) => `INPUT_${key.toUpperCase()}: \${{ inputs.${key} }}`).join("\n")
+
+    throw new Error(`
+Missing environment variables for ${missingKeys.join(", ")}.
+Add the following envs to the step "Compare with base branch bundle" in action.yaml:
+
+${s}    
+    `)
+} else {
+    console.log("All environment variables are present")
+}