ES6 modules

Information drawn from

• These are the features in es6 that you should know

Before modules, a variable declared outside any function was a global variable.

With modules, a variable declared outside any function is hidden and not available to other modules unless it is explicitly exported.

Exporting makes a function or object available to other modules. In the next example, I export functions from different modules:

//module "./TodoStore.js"
export default function TodoStore(){}

//module "./UserStore.js"
export default function UserStore(){}

Importing makes a function or object, from other modules, available to the current module.

import TodoStore from "./TodoStore";
import UserStore from "./UserStore";

const todoStore = TodoStore();
const userStore = UserStore();

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Last update on 23 Feb 2020

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