🤖 config(husky): Configure commit-msg hook.

These changes were automatically generated by a transform whose code can be found at:
  - https://github.com/aureooms/rejuvenate/blob/a5a57b70ac6fd6fb77fdab32e6b7be7519ce9564/src/transforms/husky:hook-configure-commit-msg.js
Please contact the author of the transform if you believe there was an error.

.commitlintrc.js

@@ -0,0 +1,3 @@
+module.exports = {
+	extends: ['@js-library']
+};

.husky/commit-msg

@@ -0,0 +1,52 @@
+#!/bin/sh
+. "$(dirname "$0")/_/husky.sh"
+
+function ask () {
+
+	# This is a general-purpose function to ask Yes/No questions in Bash, either
+	# with or without a default answer. It keeps repeating the question until it
+	# gets a valid answer.
+
+	# http://djm.me/ask
+
+	if [ "${2:-}" = "Y" ]; then
+		prompt="Y/n"
+		default=Y
+	elif [ "${2:-}" = "N" ]; then
+		prompt="y/N"
+		default=N
+	else
+		prompt="y/n"
+		default=
+	fi
+
+	while true; do
+
+		# Ask the question (not using "read -p" as it uses stderr not stdout)
+		echo -n "$1 [$prompt] "
+
+		# Read the answer (use /dev/tty in case stdin is redirected from somewhere else)
+		read REPLY </dev/tty
+
+		# Default?
+		if [ -z "$REPLY" ]; then
+			REPLY=$default
+		fi
+
+		# Check if the reply is valid
+		case "$REPLY" in
+			Y*|y*) return 0 ;;
+			N*|n*) return 1 ;;
+		esac
+
+	done
+
+}
+
+while ! npm run commit-msg -- "$1" ; do
+	if [ -t 1 ] && ask 'There was an error. Do you wish to amend your commit message?' Y ; then
+		${GIT_EDITOR:-$EDITOR} "$1" < /dev/tty
+	else
+		exit 1
+	fi
+done

package.json

@@ -35,6 +35,7 @@
     "build": "rm -rf lib && babel src -d lib",
     "build-docs": "esdoc",
     "build-gh-pages": "npm run build-docs",
+    "commit-msg": "commitlint --edit",
     "cover": "c8 --all --src src --reporter=lcov npm test",
     "install-hooks": "husky install",
     "lint-config": "fixpack --dryRun",
@@ -53,6 +54,8 @@
     "@babel/polyfill": "7.12.1",
     "@babel/preset-env": "7.13.10",
     "@babel/register": "7.13.8",
+    "@commitlint/cli": "12.0.1",
+    "@js-library/commitlint-config": "0.0.3",
     "ava": "3.15.0",
     "c8": "7.6.0",
     "coveralls": "3.1.0",