css/script/bump-rc

#!/bin/bash
set -e

package="$1"
npm_tag=rc
semver=$(npm bin)/semver

bold=$(tput bold)
normal=$(tput sgr0)

pushd modules/$package > /dev/null

# get the version we're publishing as a release candidate
local_version=$(jq -r .version package.json)
echo "Bumping $package@${local_version}"
if [[ $local_version =~ "-" ]]; then
  echo "❌ Found pre-release version: $package@$local_version; bailing!"
  exit 1
fi

# find the *greatest* published prerelease
rc_prefix="$local_version-rc"
rc_version=$(
  npm info "$package@$npm_tag" --json \
    | jq -r '.versions[]' \
    | grep "^${rc_prefix/./\.}" \
    | sort -r \
    | head -1
)
# if there isn't one, use the current local version
if [[ "$rc_version" == "" ]]; then
  echo "   🤷‍♀️  no published RC; using ${bold}${local_version}${normal}"
  rc_version=$local_version
else
  echo "   📰  published RC: ${bold}${rc_version}${normal}"
fi

# increment by the tagged prerelease id
next_version=$(
  $semver -i prerelease --preid $npm_tag "$rc_version"
)

bumped=$(npm version --no-git "$next_version")
echo "   ➡️  ${bold}${bumped}${normal}"
popd > /dev/null