The reason behind the creation of .pnp.loader.mjs and .pnp.cjs files by yarn

While working on my React project with Vite, I noticed that when using yarn to start the "live server," two new files are created: .pnp.loader.mjs and .pnp.cjs. Can anyone explain what these files are for? I've never come across them before as I usually use npm or yarn, so this is the first time they have appeared.

Answer №1

The implementation of .pnp.cjs forms an integral part of the Yarn Plug'n'Play process, greatly enhancing installation and runtime efficiency by rendering the traditional node_modules directory unnecessary.

Additionally, Yarn introduces a groundbreaking ESM loader known as .pnp.loader.mjs.

Answer №2

To prevent the creation of .pnp.cjs, you can establish a .yarnrc.yml file in the main directory and include: nodeLinker: node-modules

Answer №3

npx create-next-app@latest
npx next dev

According to Jan Willems, the problem stems from using Yarn.

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