barrel file
noun1
Computing, Engineering, Mathematics, Natural sciences, Physical sciences, Programming, Sciences A JavaScript or TypeScript module which does nothing except import various files and then export them together, for the convenience of other developers who only need to know about and work with that single barrel file.
- The first thing you want to do to build your framework is export the functions that you want to expose to the developer using it from the src/index.js barrel file. Whatever you export from this file makes the public API of the framework.2024, Ángel Sola Orbaiceta, Build a Frontend Web Framework (From Scratch), Shelter Island, N.Y.: Manning Publications Co., →ISBN, page 111: