Checking for file changes and running them on the `post-merge` git hook

post-merge.sh

#!/bin/bash

function changed {
  git diff --name-only HEAD@{1} HEAD | grep "^$1" > /dev/null 2>&1
}

if changed 'migrations/'; then
  echo "🗄 The migrations/ directory has changed. Run migrations script to get up-to-date."
fi

if changed 'package-lock.json'; then
  echo "📦 The package-lock.json file has changed. Run npm install to bring your dependencies up to date."
fi