const add = (a, b) => { return a + b}module.exports = { add: add minus: (a, b) => { return a - b }}
const my_math = require('./my_math') let res1 = my_math.add(4, 5) console.log(res1)
const add = (a, b) => { return a + b } module.exports = { add: add, minus: (a, b) => { return a - b } }