Multi Layer Package Link

multi-layer-link.sh

#!/usr/bin/env bash

set -e

Help()
{
   # Display Help
   echo "This script is intended to improve the development experience of packages with multiple layers of dependencies that are built locally"
   echo "All upstream packages must have valid "build" scripts"
   echo "Usage: ./multi-layer-link.sh A B C"
   echo "Result: In the case above of A -> B -> C the script will build A, install A downstream to B, build B, install B downstream to C"
   echo "Note: Performance is heavily dependent of the build times of upstream packages, try to use a performant build tool like vite on upstream packages"
}

while getopts ":h" opt; do
   case $opt in
      h)
         Help
         exit;
   esac
done



if [[ $# -lt 2 ]]
then
    echo Invalid number of arguments
    exit 1
fi


prev_tarball=""

for path in $@
do

    cd "$path" || { echo "$path" not found ; exit 1 ; }

    if [[ $prev_tarball != "" ]]
    then
        echo Installing "$prev_tarball" to "$path"
        npm i --silent "$prev_tarball" &>/dev/null || echo An error occurred while installing "$prev_tarball" to "$path"
        echo Install complete
    fi

    if [[ $path != "${*: -1:1}" ]]
    then
        echo Building "$path"
        npm run --quiet build &>/dev/null || echo "A build error occurred" 
        prev_tarball="$path"/"$(npm pack --quiet | tail -1)"
        echo Built "$prev_tarball"
    fi        

done

exit