Heads up: yalc has been effectively unmaintained since ~2021, but it still works. Alternatives worth knowing about: pnpm add ../package-a (or the link: protocol), npm pack, or just using pnpm workspaces — though none of them quite replicate yalc’s publish/push model.

Installation

npm install -g yalc

Usage

Say we have two projects. e.g. one website & one npm package that the website depends on:

website-a which depends on npm package-a

Step 1

Run yalc publish in the package-a repo

Step 2

Run yalc add package-a in the website-a repo

Step 3

Run yarn in website-a

Step 4

Whenever you update package-a, run yalc push in the package-a repo

You may need to run yarn build && yalc push if package-a needs building first. And You may need to run run yalc add package-a in the website-a repo.

If you have a dev server running in website-a, it might pick up the changes after yalc push automatically so you may not need to do anything else.

Revert

When you’re done testing with Yalc, run yalc remove --all to remove all the yalced packages from website-a