Why do we use curly brace while importing some library?

In React Native, curly braces are used in import statements to import named exports from a module. This is a common practice in JavaScript ES6 and is essential for distinguishing between default exports and named exports.

Default Exports vs. Named Exports

1. Default Exports:

   • A module can have only one default export.
   • When importing a default export, you do not use curly braces.
   • Example:
     javascript Copy

     // module.js
     const myDefaultExport = 'default';
     export default myDefaultExport;
     
     // main.js
     import myDefaultExport from './module';

2. Named Exports:

   • A module can have multiple named exports.
   • When importing named exports, you must use curly braces.
   • Example:
     javascript Copy

     // module.js
     export const namedExport1 = 'export1';
     export const namedExport2 = 'export2';
     
     // main.js
     import { namedExport1, namedExport2 } from './module';

Why Use Curly Braces?

Curly braces are used to specify exactly which named exports you want to import from a module. This is necessary because named exports are not the default export and need to be explicitly identified.

Example in React Native

In React Native, you often see imports like this:

import React, { useState } from 'react';

• React is the default export from the 'react' module.
• useState is a named export from the same module.

Summary

• Curly braces are used to import named exports.
• No curly braces are used to import default exports.
• This distinction helps in modularizing code and ensuring that only the necessary parts of a module are imported, which can improve code readability and...