git_release_version.sh

#!/bin/bash
#

# Check if there's some unstaged/uncommitted changes
if [ -n "$(git status --porcelain)" ]; then
  echo "[\033[1;31mPlease commit your changes before upgrading application version.\033[m";
  exit 1;
fi

# npm version (major|minor|patch|premajor|preminor|prepatch|prerelease)
# @see https://docs.npmjs.com/cli/version
SEMVER_TYPE=$2

# current package version
CURRENT_PACKAGE_VERSION=$1

# if semver version is not defined
if [ -z $SEMVER_TYPE ]; then
  echo '[\033[1;31mMissing semver type argument.\033[m'
  exit 1;
fi

# ---------------------
#
# Update Application version
# Using `npm version` command
#
NEW_PACKAGE_VERSION=$(npm version $SEMVER_TYPE)
# get new package version
NEW_PACKAGE_VERSION=v$(echo $NEW_PACKAGE_VERSION | cut -c 2-)

# ---------------------
#
# Generate Changelogs since last version
# Output in a Markdown file
#
FILENAME=changelogs/release_$NEW_PACKAGE_VERSION.md

# Using git log to write content
git --no-pager log --reverse --pretty=format:'
[**%h**](http://github.com/<account>/<project>/commit/%H)
*%ad*
%B
' v$CURRENT_PACKAGE_VERSION.. > $FILENAME

# prepend title and version numver
echo "### Changelogs v$CURRENT_PACKAGE_VERSION \n$(cat $FILENAME)" >$FILENAME

# amend changes to current version commit
git add -A .
git commit --amend --no-edit

exit 0;