When should I use curly braces for ES6 import?

Question

It seems to be obvious, but I found myself a bit confused about when to use curly braces for importing a single module in ES6. For example, in the React-Native project I am

Answer 1

usually when you export a function you need to use the {}

if you have

export const x 

you use

import {x} from ''

if you use

export default const x 

you need to use

import x from ''

here you can change X to whatever variable you want