When Should I Use Curly Braces for Es6 Import?

When should I use curly braces for ES6 import?

ES6 introduced a new module system that allows developers to import and export functionality between different JavaScript files. When using the import statement, you may have noticed that sometimes curly braces are used and sometimes they are not. So, when should you use curly braces for ES6 import? Let’s explore the different scenarios.

1. Importing a default export

When a module exports a single value as the default export, you can import it without using curly braces. This is the most common scenario and is used when a module only has one main functionality to export.

Example:

import MyComponent from './MyComponent';

In the above example, the module ‘./MyComponent’ exports a single value as the default export, which can be imported without using curly braces.

2. Importing named exports

When a module exports multiple values as named exports, you need to use curly braces to import them individually. This allows you to selectively import only the specific functionality you need from the module.

Example:

import { function1, function2 } from './myModule';

In the above example, the module ‘./myModule’ exports multiple values as named exports, which can be imported using curly braces.

3. Importing both default and named exports

Sometimes, a module may export both a default export and named exports. In this case, you can import the default export without using curly braces and import the named exports using curly braces.

Example:

import MyComponent, { function1, function2 } from './myModule';

In the above example, the module ‘./myModule’ exports both a default export (MyComponent) and named exports (function1, function2), which can be imported using a combination of import statements with and without curly braces.

4. Importing everything as a namespace

If you want to import all the exports from a module as a single object, you can use the import * as syntax. This allows you to access all the exports using a namespace.

Example:

import * as myModule from './myModule';

In the above example, all the exports from ‘./myModule’ are imported as a single object (myModule), which can be used to access the individual exports.

Remember, the decision to use or not use curly braces for ES6 import depends on the specific export structure of the module you are importing from. By understanding these different scenarios, you can effectively import the required functionality and optimize your code.

That’s all for this topic! Happy coding!