Add Brotli compression as the default compresion

lib/tools/redownload/gzipCompressor.js

@@ -6,7 +6,7 @@ var zlib    = require('zlib');
 var GzipCompressor = function() {
 
     function compressFile(entry) {
-        debug('Entering compressFile');
+        debug('Entering gzip compressor');
         return gzipUncompressedFile(entry)
 
         .then(gzipOptimizedFile);
@@ -16,7 +16,7 @@ var GzipCompressor = function() {
     function gzipUncompressedFile(entry) {
         var deferred = Q.defer();
 
-        if (entryTypeCanBeGzipped(entry) && entry.weightCheck && !entry.weightCheck.isCompressed && entry.weightCheck.bodyBuffer) {
+        if (entryTypeCanBeCompressed(entry) && entry.weightCheck && !entry.weightCheck.isCompressed && entry.weightCheck.bodyBuffer) {
             debug('Compression missing, trying to gzip file %s', entry.url);
 
             var uncompressedSize = entry.weightCheck.uncompressedSize;
@@ -33,7 +33,7 @@ var GzipCompressor = function() {
                     if (gainIsEnough(uncompressedSize, compressedSize)) {
                         debug('File correctly gziped, was %d and is now %d bytes', uncompressedSize, compressedSize);
 
-                        entry.weightCheck.afterCompression = compressedSize;
+                        entry.weightCheck.afterGzipCompression = compressedSize;
                     } else {
                         debug('Gzip gain is not enough, was %d and is now %d bytes', uncompressedSize, compressedSize);
                     }
@@ -53,7 +53,7 @@ var GzipCompressor = function() {
     function gzipOptimizedFile(entry) {
         var deferred = Q.defer();
 
-        if (entryTypeCanBeGzipped(entry) && entry.weightCheck && entry.weightCheck.isOptimized === false) {
+        if (entryTypeCanBeCompressed(entry) && entry.weightCheck && entry.weightCheck.isOptimized === false) {
             debug('Trying to gzip file after minification: %s', entry.url);
 
             var uncompressedSize = entry.weightCheck.optimized;
@@ -68,7 +68,7 @@ var GzipCompressor = function() {
                     var compressedSize = buffer.length;
 
                     debug('Correctly gziped the minified file, was %d and is now %d bytes', uncompressedSize, compressedSize);
-                    entry.weightCheck.afterOptimizationAndCompression = compressedSize;
+                    entry.weightCheck.afterOptimizationAndGzipCompression = compressedSize;
 
                     deferred.resolve(entry);
                 }
@@ -89,13 +89,14 @@ var GzipCompressor = function() {
         return (gain > 2048 || (ratio > 0.2 && gain > 100));
     }
 
-    function entryTypeCanBeGzipped(entry) {
+    function entryTypeCanBeCompressed(entry) {
         return entry.isJS || entry.isCSS || entry.isHTML || entry.isJSON || entry.isSVG || entry.isTTF || entry.isXML || entry.isFavicon;
     }
 
     return {
         compressFile: compressFile,
-        entryTypeCanBeGzipped: entryTypeCanBeGzipped
+        gainIsEnough: gainIsEnough,
+        entryTypeCanBeCompressed: entryTypeCanBeCompressed
     };
 };