Bundle a package and dependencies in a monorepo (bundle is controlled by "files" and "npm pack")

pack.sh

#!/usr/bin/env bash

set -e

while (( $# > 0 )); do
  case "${1}" in
    -w | --workspace)
    workspace="${2}"
    shift 2
    ;;
    -o | --output)
    output="${2}"
    shift 2
    ;;
    *)
    shift
    ;;
  esac
done

function die () {
  echo "error: $1"
  exit 1
}

if [[ -z $workspace ]]; then
  die "-w, --workspace is required"
fi

if [[ -z $output ]]; then
  die "-o, --output is required"
fi

dependencies=($(
  npm list --json -l -w $workspace \
    | jq -r -c '.. | .dependencies? | objects | .[] | @base64'
))

for ((i = 0; i < ${#dependencies[@]}; i++)); do
  package=$(echo "${dependencies[i]}" | base64 --decode)

  name=$(echo $package | jq -r '.name')
  path=$(echo $package | jq -r '.path')
  uri=$(echo $package | jq -r '.resolved')

  if [[ "$uri" == "file:"* ]]; then
    echo "copy $name"
    files=($(
      npm pack --dry-run --json -w $name \
        | jq -r '.[].files[].path | @base64'
    ))
    for item in "${files[@]}"; do
      file=$(echo $item | base64 --decode)
      if (( $i == 0 )); then
        echo "copy $output/$(dirname $file)"
        mkdir -p $output/$(dirname $file)
        cp -L $path/$file $output/$file
      else
        echo "copy $output/node_modules/$name/$(dirname $file)"
        mkdir -p $output/node_modules/$name/$(dirname $file)
        cp -L $path/$file $output/node_modules/$name/$file
      fi
    done
  else
    echo "copy $output/node_modules/$name"
    mkdir -p $output/node_modules/$name
    cp -L -R -T $path $output/node_modules/$name
  fi
done

Requires npm@^8

./pack.sh -w @scope/package -o bundle  

{
  "name": "@scope/package",
  "version": "1.0.0",
  "files": [ /* here are your files to bundle */ ]
}