Add version bump script

scripts/bump-version.sh

@@ -0,0 +1,39 @@
+#!/bin/bash
+
+set -e
+
+if [[ -z $1 ]]; then
+  echo "Usage: $0 {patch|minor|major}"
+  exit 1
+fi
+
+if [[ $1 =~ ^(patch|minor|major)$ ]]; then
+  echo "Creating a new '$1' version"
+else
+  echo "Invalid argument: $1"
+  echo "Usage: $0 {patch|minor|major}"
+  exit 1
+fi
+
+if [[ -n $(git status --porcelain) ]]; then
+  echo "Your working directory is not clean. Please commit or stash your changes before proceeding."
+  exit 1
+else
+  echo "Your working directory is clean."
+fi
+
+echo "Bumping version"
+# Bump package.json only; we create the commit and tag ourselves below so the
+# tag matches the bare version (e.g. 0.7.7) that publish.yml triggers on.
+npm version "$1" --no-git-tag-version
+
+# Commit and tag
+git add .
+TAG=$(node -p "require('./package.json').version")
+git commit -m "Bump version to $TAG"
+
+git push
+echo "Tagging $TAG"
+git tag -a "$TAG" -m "Release $TAG"
+git push origin "$TAG"
+echo "Done"