ci: check generated pages (#696)

Author: brendanjryan

.github/workflows/ci.yml

@@ -71,6 +71,7 @@ jobs:
           node-version: "24"
           cache: "pnpm"
       - run: pnpm install --frozen-lockfile
+      - run: pnpm check:generated
       - run: pnpm build
         env:
           MPP_SECRET_KEY: ${{ secrets.MPP_SECRET_KEY || 'ci-placeholder-key' }}

package.json

@@ -7,10 +7,12 @@
     "build": "node scripts/generate-discovery.ts && node scripts/build-diagrams.ts && node scripts/copy-vocs-theme.ts && node scripts/generate-cli-help.ts && node scripts/generate-og-descriptions.ts && vite build",
     "check": "biome check --write",
     "check:ci": "biome check",
+    "check:generated": "pnpm generate:pages && git diff --exit-code -- src/pages.gen.ts",
     "check:sdk-drift": "npx tsx .github/actions/sdk-drift-check/check-sdk-drift.ts",
     "check:types": "tsc --noEmit",
     "dev": "node scripts/generate-discovery.ts && vite dev",
     "generate:discovery": "node scripts/generate-discovery.ts",
+    "generate:pages": "node scripts/generate-pages.ts",
     "preinstall": "pnpx only-allow pnpm",
     "prepare": "pnpm simple-git-hooks",
     "preview": "vite preview",

scripts/generate-pages.ts

@@ -0,0 +1,42 @@
+import { existsSync, readFileSync, writeFileSync } from "node:fs";
+import { createRequire } from "node:module";
+import { dirname, resolve } from "node:path";
+import { pathToFileURL } from "node:url";
+
+const root = resolve(import.meta.dirname, "..");
+const pagesDir = resolve(root, "src/pages");
+const outputPath = resolve(root, "src/pages.gen.ts");
+
+const require = createRequire(import.meta.url);
+const vocsEntry = require.resolve("vocs");
+const typegenPath = resolve(
+  dirname(vocsEntry),
+  "waku/internal/patches/vite-plugins/fs-router-typegen.js",
+);
+
+const { generateFsRouterTypes } = (await import(
+  pathToFileURL(typegenPath).href
+)) as {
+  generateFsRouterTypes: (
+    pagesDir: string,
+  ) => Promise<string | null | undefined>;
+};
+
+if (!existsSync(pagesDir)) {
+  throw new Error(`Pages directory not found: ${pagesDir}`);
+}
+
+const generated = await generateFsRouterTypes(pagesDir);
+if (!generated) {
+  throw new Error("Failed to generate src/pages.gen.ts");
+}
+
+const current = existsSync(outputPath)
+  ? readFileSync(outputPath, "utf-8")
+  : undefined;
+
+if (current !== generated) {
+  writeFileSync(outputPath, generated, "utf-8");
+}
+
+console.log("Generated src/pages.gen.ts");