2.4-Modules ecma-international.org
Modules are stored in files.
//------ lib.js ------
export const sqrt = Math.sqrt;
export function square(x) {
return x * x;
}
export function diag(x, y) {
return sqrt(square(x) + square(y));
}
//------ main.js ------
import { square, diag } from ‘src/lib';
console.log( square(11) ); // 121
console.log( diag(4, 3) ); // 5