build: set up build script

packages/blocknumber/.gitignore

@@ -0,0 +1 @@
+dist/

packages/blocknumber/package.json

@@ -4,7 +4,7 @@
     "description": "",
     "main": "index.ts",
     "scripts": {
-        "build": "tsc",
+        "build": "tsc -p tsconfig.build.json",
         "lint": "eslint .",
         "lint:fix": "pnpm lint --fix",
         "format": "prettier --check .",

packages/blocknumber/src/helloWorld.spec.ts

@@ -1,7 +1,11 @@
 import { describe, expect, it } from "vitest";
 
+import foo from "./helloWorld";
+
 describe("test", () => {
     it("pass", () => {
-        expect(1).toBe(1);
+        const result = foo();
+
+        expect(result).toBe("bar");
     });
 });

packages/blocknumber/src/helloWorld.ts

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