Add prettier, reformat

.prettierrc

@@ -0,0 +1,6 @@
+{
+  "trailingComma": "none",
+  "singleQuote": true,
+  "printWidth": 80,
+  "arrowParens": "always"
+}

index.js

@@ -1,9 +1,9 @@
 'use strict';
 
-var through2    = require('through2');
+var through2 = require('through2');
 var PluginError = require('plugin-error');
-var bufferMode  = require('./lib/buffer');
-var streamMode  = require('./lib/stream');
+var bufferMode = require('./lib/buffer');
+var streamMode = require('./lib/stream');
 var defaults = require('defaults');
 var bytes = require('bytes');
 
@@ -21,17 +21,16 @@ var PLUGIN_NAME = 'gulp-zopfli';
  * @returns {Stream}
  */
 module.exports = function(options) {
-
   options = options || {};
   defaults(options, {
     format: 'gzip',
     append: true,
     threshold: false,
     zopfliOptions: {}
   });
-  if(options.threshold) {
-    if(typeof options.threshold != 'number') {
-      if(typeof options.threshold == 'string') {
+  if (options.threshold) {
+    if (typeof options.threshold != 'number') {
+      if (typeof options.threshold == 'string') {
         options.threshold = bytes(options.threshold) || 150;
       } else {
         options.threshold = 150;
@@ -41,12 +40,12 @@ module.exports = function(options) {
   }
 
   var ext = '';
-  if(options.append) {
-    if(options.format === 'gzip') {
+  if (options.append) {
+    if (options.format === 'gzip') {
       ext = '.gz';
-    } else if(options.format === 'deflate') {
+    } else if (options.format === 'deflate') {
       ext = '.deflate';
-    } else if(options.format === 'zlib') {
+    } else if (options.format === 'zlib') {
       ext = '.zz';
     }
   }
@@ -55,7 +54,6 @@ module.exports = function(options) {
   stream.options = options;
 
   function compress(file, enc, done) {
-
     /*jshint validthis: true */
     var self = this;
 
@@ -83,7 +81,7 @@ module.exports = function(options) {
     };
 
     // Check if file contents is a buffer or a stream
-    if(file.isBuffer()) {
+    if (file.isBuffer()) {
       bufferMode(file.contents, options, finished);
     } else {
       streamMode(file.contents, options, finished);

lib/buffer.js

@@ -3,7 +3,7 @@
 const through2 = require('through2');
 const zopfli = require('@gfx/zopfli');
 const Readable = require('stream').Readable;
-const toArray  = require('stream-to-array');
+const toArray = require('stream-to-array');
 const compress = require('./compress');
 
 module.exports = function(contents, options, callback) {
@@ -29,7 +29,7 @@ module.exports = function(contents, options, callback) {
   rs.pipe(compressStream);
 
   // Turn gzip stream back into a buffer
-  toArray(compressStream, function (err, chunks) {
+  toArray(compressStream, function(err, chunks) {
     if (err) {
       callback(err, null, false);
       return;

lib/compress.js

@@ -1,11 +1,11 @@
-const zopfli   = require('@gfx/zopfli');
+const zopfli = require('@gfx/zopfli');
 const through2 = require('through2');
 
 const formats = ['gzip', 'deflate', 'zlib'];
 
 module.exports = ({ format, zopfliOptions }, callback) => {
   if (!formats.includes(format)) {
-    callback("incorrect format : " + format, null, false);
+    callback('incorrect format : ' + format, null, false);
     return;
   }
 

lib/stream.js

@@ -5,14 +5,13 @@ const toArray = require('stream-to-array');
 const compress = require('./compress');
 
 module.exports = function(contents, options, callback) {
-
   const compressStream = compress(options, callback);
   if (!compressStream) return;
 
   // Check if the threshold option is set
   if (options.threshold) {
     // Check if the stream contents is less than the threshold
-    toArray(contents, function (err, chunks) {
+    toArray(contents, function(err, chunks) {
       if (err) {
         callback(err, null, false);
         return;

package.json

@@ -1,6 +1,6 @@
 {
   "name": "gulp-zopfli-green",
-  "version": "3.0.0-beta.1",
+  "version": "3.0.0-beta.2",
   "description": "Updated Zopfli compressor for gulp",
   "keywords": [
     "gulpplugin",
@@ -49,6 +49,7 @@
     "jshint": "^2.9.6",
     "mocha": "^5.2.0",
     "nid": "^0.3.2",
+    "prettier": "^1.14.2",
     "should": "^13.2.1"
   },
   "resolutions": {

yarn.lock

@@ -2044,6 +2044,11 @@ prelude-ls@~1.1.2:
   resolved "https://registry.yarnpkg.com/prelude-ls/-/prelude-ls-1.1.2.tgz#21932a549f5e52ffd9a827f570e04be62a97da54"
   integrity sha1-IZMqVJ9eUv/ZqCf1cOBL5iqX2lQ=
 
+prettier@^1.14.2:
+  version "1.14.2"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.14.2.tgz#0ac1c6e1a90baa22a62925f41963c841983282f9"
+  integrity sha512-McHPg0n1pIke+A/4VcaS2en+pTNjy4xF+Uuq86u/5dyDO59/TtFZtQ708QIRkEZ3qwKz3GVkVa6mpxK/CpB8Rg==
+
 pretty-hrtime@^1.0.0:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/pretty-hrtime/-/pretty-hrtime-1.0.3.tgz#b7e3ea42435a4c9b2759d99e0f201eb195802ee1"