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.