Bash script to migrate multiple projects into one Lerna monorepo (https://lernajs.io)

migrate-to-lerna.sh

#!/usr/bin/env bash

set -x
shopt -s extglob dotglob

cd "$HOME"
rm -rf "$HOME/TEMP_DIR"
mkdir "$HOME/TEMP_DIR"
cd "$HOME/TEMP_DIR"
git init

function clone_repo () {
  git clone "https://github.com/some-username/$1.git"
  cd "$1"
  mkdir -p "packages/$1"
  git mv !(packages|.git|..|.) packages
  cd packages
  git mv !("$1") "$1"
  cd "$HOME/TEMP_DIR/$1"
  git add . -A
  git commit -m "Move source to packages/$1" -n
  cd "$HOME/TEMP_DIR"
}

clone_repo "some-package-1"
clone_repo "some-package-2"
clone_repo "some-package-3"

cd "$HOME/TEMP_DIR"
mkdir lerna-monorepo
cd lerna-monorepo
git init

git pull $HOME/TEMP_DIR/some-package-1 master --allow-unrelated-histories -s resolve
git pull $HOME/TEMP_DIR/some-package-2 master --allow-unrelated-histories -s resolve
git pull $HOME/TEMP_DIR/some-package-3 master --allow-unrelated-histories -s resolve

set +x
shopt -u extglob dotglob