fix(build): missing bundle mode

scripts/build.ts

@@ -1,13 +1,14 @@
 import path from "path";
-import { build as esbuild } from "esbuild";
+import { build as esbuild, BuildOptions } from "esbuild";
 
-const baseConfig = {
-  platform: "node" as const,
-  target: "esnext" as const,
-  format: "cjs" as const,
+const baseConfig: BuildOptions = {
+  platform: "node",
+  target: "esnext",
+  format: "cjs",
   nodePaths: [path.join(__dirname, "../src")],
   sourcemap: true,
   external: [],
+  bundle: true,
 };
 
 async function main() {

src/__tests__/index.test.ts

@@ -1,27 +1,14 @@
 import { describe, expect, it } from "vitest";
-import { foo, bar } from "../index";
+import { foobar } from "../index";
 
-describe("foo()", () => {
+describe("foobar()", () => {
   describe("given two positive integers", () => {
     const first = 1;
     const second = 2;
 
     describe("when called", () => {
-      it("returns the sum of them", () => {
-        expect(foo(first, second)).toEqual(3);
-      });
-    });
-  });
-});
-
-describe("bar()", () => {
-  describe("given two positive integers", () => {
-    const first = 2;
-    const second = 1;
-
-    describe("when called", () => {
-      it("returns the subtraction of them", () => {
-        expect(bar(first, second)).toEqual(1);
+      it("returns the sum of them multiplied by 3", () => {
+        expect(foobar(first, second)).toEqual(9);
       });
     });
   });

src/bar.ts

@@ -0,0 +1,3 @@
+export function bar() {
+  return "bar";
+}

src/foo.ts

@@ -0,0 +1,3 @@
+export function foo() {
+  return "foo";
+}

src/index.ts

@@ -1,7 +1,6 @@
-export function foo(a: number, b: number): number {
-  return a + b;
-}
+import { bar } from "./bar";
+import { foo } from "./foo";
 
-export function bar(a: number, b: number): number {
-  return a - b;
+export function foobar(a: number, b: number) {
+  return foo().repeat(a).length + bar().repeat(b).length;
 }