chore: initialize from frontend template 4dc033c

vite.service-worker.config.ts

@@ -0,0 +1,92 @@
+import { readFile } from "node:fs/promises";
+import { defineConfig } from "vite";
+
+import {
+  SERVICE_WORKER_CACHE_SCHEMA_VERSION,
+  SERVICE_WORKER_PROTOCOL_VERSION,
+  SERVICE_WORKER_SCRIPT_PATH,
+} from "./src/contracts/service-worker.ts";
+import { INSTALLED_RUNTIME_CAPABILITIES } from "./src/features/installed-runtime-capabilities.ts";
+import { resolveServiceWorkerBuildInput } from "./scripts/lib/service-worker-build-input.ts";
+
+/**
+ * §17.2.2 step 5. The Service Worker build.
+ *
+ * Runs only when the static selection is `ACTIVE`, after the app build has
+ * completed and the hashed asset list has been generated. `emptyOutDir` is
+ * false so it adds `service-worker.js` beside the already-built app rather than
+ * replacing it.
+ */
+
+const selection = INSTALLED_RUNTIME_CAPABILITIES.serviceWorker;
+
+async function readGenerated<T>(path: string, exportName: string): Promise<T> {
+  try {
+    const module = (await import(path)) as Record<string, unknown>;
+    if (!(exportName in module)) {
+      throw new TypeError(`Generated module does not export ${exportName}.`);
+    }
+    return module[exportName] as T;
+  } catch (error) {
+    throw new TypeError(`Required generated module is unavailable: ${path}`, {
+      cause: error,
+    });
+  }
+}
+
+const assets = await readGenerated(
+  "./.generated/frontend-runtime/service-worker-assets.ts",
+  "SERVICE_WORKER_ASSETS",
+);
+const contractSet = await readGenerated<{ setDigest?: string }>(
+  "./.generated/frontend-runtime/contract-set.ts",
+  "BUILD_CONTRACT_SET",
+);
+const runtimeConfig = JSON.parse(
+  await readFile("public/config.json", "utf8"),
+) as Record<string, string>;
+
+const buildId = process.env.VITE_BUILD_ID ?? "local-build";
+const releaseId = process.env.RELEASE_ID ?? "local-release";
+const buildInput = resolveServiceWorkerBuildInput({
+  selection,
+  assets,
+  contractSet,
+  runtimeConfig,
+  buildId,
+  releaseId,
+});
+
+export default defineConfig({
+  build: {
+    // §17.2.2: exactly one input, exactly one output, no additional chunk.
+    emptyOutDir: false,
+    sourcemap: false,
+    rollupOptions: {
+      input: "src/adapters/service-worker/service-worker-entry.ts",
+      output: {
+        format: "es",
+        inlineDynamicImports: true,
+        entryFileNames: SERVICE_WORKER_SCRIPT_PATH,
+      },
+    },
+  },
+  define: {
+    __CA_SERVICE_WORKER_BUILD_INFO__: JSON.stringify({
+      serviceWorkerProtocolVersion: SERVICE_WORKER_PROTOCOL_VERSION,
+      cacheSchemaVersion: SERVICE_WORKER_CACHE_SCHEMA_VERSION,
+      buildId,
+      releaseId,
+      contractSetDigest: buildInput.contractSetDigest,
+      staticAssetSetDigest: buildInput.assets.setDigest,
+    }),
+    __CA_SERVICE_WORKER_ASSETS__: JSON.stringify(buildInput.assets),
+    __CA_SERVICE_WORKER_HANDLERS__: JSON.stringify(buildInput.handlers),
+    __CA_RUNTIME_CONFIG_URL__: JSON.stringify(
+      process.env.VITE_RUNTIME_CONFIG_URL ?? "/config.json",
+    ),
+    __CA_RELEASE_MANIFEST_URL__: JSON.stringify(
+      buildInput.releaseManifestUrl,
+    ),
+  },
+});