setup librejs license and cachebust service worker file

scripts/cachebust.sh

@@ -0,0 +1,41 @@
+#!/bin/bash
+
+set -Eeuo pipefail
+trap cleanup SIGINT SIGTERM ERR EXIT
+
+readonly PROJECT_ROOT=$(realpath $(dirname $(dirname "${BASH_SOURCE[0]}")))
+source $PROJECT_ROOT/scripts/lib.sh
+
+readonly DIST=$PROJECT_ROOT/static/cache/bundle/
+
+
+file_extension() {
+	echo $1 | rev | tr
+}
+
+cache_bust(){
+	name=$(get_file_name $1)
+	extension="${name##*.}"
+	filename="${name%.*}"
+	file_hash=$(sha256sum $1 | cut -d " " -f 1 | tr "[:lower:]" "[:upper:]") 
+
+	msg "${GREEN}- Processing $name: $filename.$file_hash.$extension"
+
+	sed -i \
+		"s/$name/assets\/bundle\/$filename.$file_hash.$extension/" \
+		$(find $DIST -type f -a -name "*.js")
+}
+
+setup_colors
+
+msg "${BLUE}[*] Setting up files for cache busting"
+
+for file in $(find $DIST  -type f -a -name "*.js")
+do
+	name=$(get_file_name $file)
+	case $name in
+		"bench.js")
+			cache_bust $file
+			;;
+	esac
+done