feat(compiler): compile client api blocks into the browser module

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-19 15:41:13 +05:30
parent b457ad1d54
commit bd2f6ac5e3
2 changed files with 109 additions and 0 deletions
@@ -0,0 +1,82 @@
+import { expect, test } from "bun:test";
+import { parse } from "@wrnexus/syntax";
+import { generateTargets } from "../src/targets.ts";
+
+function browserModule(inner: string): string {
+  return generateTargets(
+    parse(`page Repro {
+  client {
+${inner}
+  }
+
+  functions {
+    client async function run(): Promise<void> {
+      const users = await api.searchUsers({ name: "Ajay" })
+      console.log(users)
+    }
+  }
+
+  view { <main><button @click="run()">go</button></main> }
+}
+`),
+  ).browser;
+}
+
+const BLOCK = `    api searchUsers POST /api/users {
+      request {
+        body {
+          name?: string
+          age?: number
+        }
+      }
+
+      response {
+        return data.users
+      }
+
+      error {
+        return []
+      }
+    }`;
+
+test("emits an api member that calls the transport with the block's path and method", () => {
+  const generated = browserModule(BLOCK);
+
+  expect(generated).toContain("const api =");
+  expect(generated).toContain("searchUsers");
+  expect(generated).toContain('"/api/users"');
+  expect(generated).toContain('"POST"');
+});
+
+test("declared field types never reach the browser module", () => {
+  // The artifact is written as .mjs and parsed as JavaScript.
+  const generated = browserModule(BLOCK);
+
+  expect(generated).not.toContain("name?: string");
+  expect(generated).not.toContain("age?: number");
+});
+
+test("the emitted module is valid JavaScript", () => {
+  const generated = browserModule(BLOCK);
+
+  expect(() => {
+    new Function(generated.replace(/^\s*import[^\n]*$/gm, "").replace(/\bexport\s+/g, ""));
+  }).not.toThrow();
+});
+
+test("a block without an error section still emits its response body", () => {
+  const generated = browserModule(`    api plainUsers GET /api/users {
+      request {
+        parameters {
+          team: string
+        }
+      }
+
+      response {
+        return data.users
+      }
+    }`);
+
+  expect(generated).toContain("plainUsers");
+  expect(generated).toContain("data.users");
+});