A TypeScript Barrel is a way to simplify the importing of multiple exports from a single module.

Imagine you have a module called myModule that has several exports, such as:

export const foo = 1;
export const bar = 2;
export const baz = 3;

To import these exports into another module, you would normally have to write something like this:

import { foo, bar, baz } from './myModule';

This can get tedious if you have a large number of exports, and it can also make your code less readable. This is where TypeScript Barrels come in.