style(livereload): format code

- read environment var as array
- convert array elements to regex objects
- update environment variable defaults

build/Dockerfile

@@ -23,7 +23,8 @@ EXPOSE 35729
 RUN apk --update --no-cache add \
         tini \
         tzdata \
-    openssl
+        openssl \
+    && apk --update --no-cache upgrade
 
 # labels
 LABEL org.opencontainers.image.authors="Asif Bacchus <asif@asifbacchus.dev>"
@@ -40,7 +41,7 @@ ENV PATH=/home/node/.npm-global/bin:$PATH
 ENV TZ="Etc/UTC"
 ENV LR_PORT=35729
 ENV LR_EXTS="html,xml,css,js,jsx,ts,tsx,php,py"
-ENV LR_EXCLUDE=".git/,.svn/,.vscode/,.idea/"
+ENV LR_EXCLUDE=".vscode/,.idea/,.tmp$,.swp$"
 ENV LR_DELAY=500
 ENV LR_DEBUG=true
 ENV LR_HTTPS=true

build/livereload.js

@@ -1,6 +1,5 @@
-// implement node-livereload over an HTTPS connection
+// implement node-livereload over an HTTP or HTTPS connection
 
-// healthcheck function
 function healthcheck() {
     const express = require('express');
     const http = require('http');
@@ -8,12 +7,12 @@ function healthcheck() {
     const app = express();
     const router = express.Router();
 
-    router.use((req, res, next) =>{
+    router.use((req, res, next) => {
         res.header('Access-Control-Allow-Methods', 'GET');
         next();
     });
 
-    router.get('/health', (req, res) =>{
+    router.get('/health', (req, res) => {
         res.status(200).send('Ok');
     });
 
@@ -23,17 +22,23 @@ function healthcheck() {
     hServer.listen(3000);
 }
 
-// load livereload module
+// load modules
 const livereload = require('livereload');
+const fs = require('fs');
+
+// process from environment variable as array and convert elements to RegEx objects
+const extraExclusions = process.env.LR_EXCLUDE.split(",");
+extraExclusions.forEach((exclusion, idx) => {
+    extraExclusions[idx] = new RegExp(exclusion);
+});
 
 // set createServer options
-const fs = require('fs');
 const options = {
     port: process.env.LR_PORT,
     exts: process.env.LR_EXTS,
-    exclusions: process.env.LR_EXCLUDE,
+    exclusions: extraExclusions,
     usePolling: true,
-    delay: process.env.LR_DELAY,
+    delay: process.env.LR_DELAY
 };
 
 // set debugging output as per LR_DEBUG