test: split vitest into unit and gateway

scripts/test-parallel.mjs

@@ -0,0 +1,42 @@
+import { spawn } from "node:child_process";
+
+const pnpm = process.platform === "win32" ? "pnpm.cmd" : "pnpm";
+
+const runs = [
+  {
+    name: "unit",
+    args: ["vitest", "run", "--config", "vitest.unit.config.ts"],
+  },
+  {
+    name: "gateway",
+    args: ["vitest", "run", "--config", "vitest.gateway.config.ts"],
+  },
+];
+
+const children = new Set();
+
+const run = (entry) =>
+  new Promise((resolve) => {
+    const child = spawn(pnpm, entry.args, {
+      stdio: "inherit",
+      env: { ...process.env, VITEST_GROUP: entry.name },
+    });
+    children.add(child);
+    child.on("exit", (code, signal) => {
+      children.delete(child);
+      resolve(code ?? (signal ? 1 : 0));
+    });
+  });
+
+const shutdown = (signal) => {
+  for (const child of children) {
+    child.kill(signal);
+  }
+};
+
+process.on("SIGINT", () => shutdown("SIGINT"));
+process.on("SIGTERM", () => shutdown("SIGTERM"));
+
+const codes = await Promise.all(runs.map(run));
+const failed = codes.find((code) => code !== 0);
+process.exit(failed ?? 0);