feat: add application productivity foundations

packages/csr/test/api-client.test.ts

@@ -0,0 +1,23 @@
+import { expect, test } from "bun:test";
+import { createApiClient } from "../src/index.ts";
+
+test("typed API client expands params, query and JSON input", async () => {
+  let request: Request | undefined;
+  const call = createApiClient({
+    baseUrl: "https://app.test",
+    fetch: async (input, init) => {
+      request = new Request(input, init);
+      return Response.json({ ok: true });
+    },
+  });
+  expect(
+    await call<{ ok: boolean }, { name: string }>("/api/users/[id]", {
+      method: "PUT",
+      params: { id: 7 },
+      query: { audit: true },
+      body: { name: "Ada" },
+    }),
+  ).toEqual({ ok: true });
+  expect(request?.url).toBe("https://app.test/api/users/7?audit=true");
+  expect(await request?.json()).toEqual({ name: "Ada" });
+});