fix(compiler): avoid deferred helper name collisions

packages/compiler/src/client-codegen.ts

@@ -270,8 +270,8 @@ function functionEntry(
     .join("\n");
   const commitBinding = stateNames.length
     ? `const __wrnexusCommit = () => { ${copyBack} };
-    ${!parameterNames.has("commit") && !declaredLocals.has("commit") ? "const commit = __wrnexusCommit;" : ""}
-    ${!parameterNames.has("setTimeout") && !declaredLocals.has("setTimeout") ? `const setTimeout = (callback, delay, ...args) => globalThis.setTimeout(() => {
+    ${!parameterNames.has("commit") && !declaredLocals.has("commit") && !functionAliases.includes("commit") ? "const commit = __wrnexusCommit;" : ""}
+    ${!parameterNames.has("setTimeout") && !declaredLocals.has("setTimeout") && !functionAliases.includes("setTimeout") ? `const setTimeout = (callback, delay, ...args) => globalThis.setTimeout(() => {
       try { return callback(...args); } finally { __wrnexusCommit(); }
     }, delay);` : ""}`
     : "";

packages/compiler/test/v060-targets.test.ts

@@ -184,3 +184,19 @@ test("deferred timer state writes commit after the client function returns", asy
   expect(state.value).toBe(2);
   expect(rendered).toBe("2");
 });
+
+test("the deferred commit helper does not shadow an authored commit function", () => {
+  const targets = generateTargets(
+    parse(`component AuthoredCommit {
+      state { value: number = 0 }
+      functions {
+        client function commit(): void { value = 1 }
+        client function save(): void { commit() }
+      }
+      view { <button @click='save()'>{value}</button> }
+    }`),
+  );
+
+  expect(() => new Function(targets.browser.replace(/^export\s+/gm, ""))).not.toThrow();
+  expect(targets.browser).not.toContain("const commit = __wrnexusCommit");
+});