Should I Use Curly Braces for ES6 Single-Module Imports?

When to Use Curly Braces for ES6 Single-Module Imports

In ES6, you have two options for importing modules: default and named imports. Default exports allow you to import the entire module using a single identifier, while named exports let you specify which specific components you want to import.

Default Imports (No Curly Braces)

Use default imports when you want to import the entire module as a single object. This is useful when the module only exports one default value, such as a class or a function. To use a default import, simply use the import keyword followed by the module path. For example:

import initialState from './todoInitialState';

Named Imports (Curly Braces)

Use named imports when you want to import specific components from a module. To do this, enclose the components you want to import in curly braces after the import keyword. For example:

import { A, B } from './someModule';

When to Use Curly Braces for Single-Module Imports

You should never use curly braces for single-module imports. Default imports (without curly braces) are always used for single-module imports, regardless of whether the module has a named export or not. Using curly braces for single-module imports will result in an error.

Default vs. Named Exports

Default exports are useful for exporting the main functionality of a module, while named exports are suitable for exporting auxiliary functions or constants that may not be necessary for all users of the module. A module can have only one default export, but it can have multiple named exports.

Remember that single-module imports always use default imports (no curly braces). If a module has a named export that you want to import, you must use named imports (with curly braces).

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