create a app.js file
run > npm init add "type" = "module"
add this code to app.js
import test from "aabb11"
const result1 = test.add(2, 3); console.log(result1); // Output: 5
const result2 = test.subtract(7, 4); console.log(result2); // Output: 3
const result3 = test.multiply(5, 6); console.log(result3); // Output: 30
now run node app.js