yaln (Yet another local npm)

While developing some libraries I noticed that npm link, yarn link and also partially yalc sometimes have problem when it comes to mimicking the publish process and create an acutally working local environment.

So yaln will simply "create" a simple local npm registry.

It will:

• Use npm pack to create an actual npm package file and store it in ~/.yaln/packages/.
• It will watch for changes of packages in ~/.yaln/packages/ and installs them locally.

Install

npm i -g @chbiel/yaln

Or from source

git clone ...
cd ...
npm i -g .

Usage

In source project

tsc-watch

tsc-watch --onSuccess "yaln pack"

Rollup

rollup -c --watch --watch.onBundleEnd="yaln pack"

npm run watch --watch.onBundleEnd="yaln pack"

In target project

yaln watch [package list]

Pre commit hook

Simple pre commit hook to ensure no file references in package json get committed:

      - id: no-relative-packages
        name: no-relative-packages
        entry: bash -c "git diff --cached --name-only | grep -q 'package.json' && cat package.json | grep -E 'file:.+\/\.lnpm\/.+' && echo -e 'file references not allowed in package.json' 1>&2 && exit 1 || exit 0"
        language: system
        pass_filenames: false

Known bugs

• Looks like sometimes, when the first package update gets detected, the package gets installed twice

Missing features

• Support yarn
• Add command to add dependency without watch
• Allow configuration of exchangePath
• Add CommonJS support