├── test ├── fixtures │ ├── 123 │ └── testing ├── expected │ ├── custom_options │ └── default_options └── devperf_test.js ├── .gitignore ├── demo ├── img │ └── results.png └── smallest-config │ ├── package.json │ └── Gruntfile.js ├── tasks ├── front │ ├── assets │ │ ├── interlace.png │ │ ├── main.css │ │ ├── main.js │ │ ├── jquery-2.1.0.min.js │ │ └── handlebars-v1.3.0.js │ └── index.html └── devperf.js ├── .jshintrc ├── LICENSE-MIT ├── Gruntfile.js ├── package.json └── README.md /test/fixtures/123: -------------------------------------------------------------------------------- 1 | 1 2 3 -------------------------------------------------------------------------------- /test/fixtures/testing: -------------------------------------------------------------------------------- 1 | Testing -------------------------------------------------------------------------------- /test/expected/custom_options: -------------------------------------------------------------------------------- 1 | Testing: 1 2 3 !!! -------------------------------------------------------------------------------- /test/expected/default_options: -------------------------------------------------------------------------------- 1 | Testing, 1 2 3. -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | node_modules 2 | npm-debug.log 3 | devperf -------------------------------------------------------------------------------- /demo/img/results.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/gmetais/grunt-devperf/HEAD/demo/img/results.png -------------------------------------------------------------------------------- /tasks/front/assets/interlace.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/gmetais/grunt-devperf/HEAD/tasks/front/assets/interlace.png -------------------------------------------------------------------------------- /demo/smallest-config/package.json: -------------------------------------------------------------------------------- 1 | { 2 | "name": "devperf", 3 | "version": "0.0.0", 4 | "devDependencies": { 5 | "grunt": "~0.4.4", 6 | "grunt-devperf": "latest" 7 | } 8 | } -------------------------------------------------------------------------------- /.jshintrc: -------------------------------------------------------------------------------- 1 | { 2 | "curly": true, 3 | "eqeqeq": true, 4 | "immed": true, 5 | "latedef": true, 6 | "newcap": true, 7 | "noarg": true, 8 | "sub": true, 9 | "undef": true, 10 | "boss": true, 11 | "eqnull": true, 12 | "node": true 13 | } 14 | -------------------------------------------------------------------------------- /demo/smallest-config/Gruntfile.js: -------------------------------------------------------------------------------- 1 | module.exports = function(grunt) { 2 | 3 | grunt.initConfig({ 4 | devperf: { 5 | options: { 6 | urls: [ 7 | // Insert the URLs you want to test in this list 8 | 'http://www.my-website.com/my-page-1', 9 | 'http://www.my-website.com/my-page-2' 10 | ], 11 | openResults: true, 12 | timeout: 300, 13 | numberOfRuns: 5, 14 | resultsFolder: './' 15 | } 16 | } 17 | }); 18 | 19 | grunt.loadNpmTasks('grunt-devperf'); 20 | grunt.registerTask('default', ['devperf']); 21 | }; -------------------------------------------------------------------------------- /LICENSE-MIT: -------------------------------------------------------------------------------- 1 | Copyright (c) 2014 Gaël Métais 2 | 3 | Permission is hereby granted, free of charge, to any person 4 | obtaining a copy of this software and associated documentation 5 | files (the "Software"), to deal in the Software without 6 | restriction, including without limitation the rights to use, 7 | copy, modify, merge, publish, distribute, sublicense, and/or sell 8 | copies of the Software, and to permit persons to whom the 9 | Software is furnished to do so, subject to the following 10 | conditions: 11 | 12 | The above copyright notice and this permission notice shall be 13 | included in all copies or substantial portions of the Software. 14 | 15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 16 | EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES 17 | OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 18 | NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT 19 | HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, 20 | WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 21 | FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 22 | OTHER DEALINGS IN THE SOFTWARE. 23 | -------------------------------------------------------------------------------- /Gruntfile.js: -------------------------------------------------------------------------------- 1 | /* 2 | * grunt-devperf 3 | * https://github.com/gaelmetais/grunt-devperf 4 | * 5 | * Copyright (c) 2014 Gaël Métais 6 | * Licensed under the MIT license. 7 | */ 8 | 9 | module.exports = function(grunt) { 10 | 'use strict'; 11 | 12 | // Project configuration. 13 | grunt.initConfig({ 14 | jshint: { 15 | all: [ 16 | 'Gruntfile.js', 17 | 'tasks/devperf.js', 18 | 'tasks/front/assets/main.js' 19 | ] 20 | }, 21 | 22 | // Configuration to be run 23 | devperf: { 24 | options: { 25 | urls: [ 26 | 'http://www.google.com', 27 | 'http://www.yahoo.com' 28 | ], 29 | openResults: true 30 | } 31 | }, 32 | 33 | // Unit tests : TODO 34 | nodeunit: { 35 | tests: [] 36 | } 37 | 38 | }); 39 | 40 | // Actually load this plugin's task(s). 41 | grunt.loadTasks('tasks'); 42 | 43 | // These plugins provide necessary tasks. 44 | grunt.loadNpmTasks('grunt-contrib-jshint'); 45 | grunt.loadNpmTasks('grunt-contrib-clean'); 46 | 47 | 48 | grunt.registerTask('default', ['devperf']); 49 | 50 | // By default, lint and run all tests. 51 | grunt.registerTask('lint', ['jshint']); 52 | 53 | }; 54 | -------------------------------------------------------------------------------- /package.json: -------------------------------------------------------------------------------- 1 | { 2 | "name": "grunt-devperf", 3 | "description": "Helps front-end developers to reach a good quality good performances, based on phantomas and grunt-phantomas.", 4 | "version": "0.2.13", 5 | "homepage": "https://github.com/gmetais/grunt-devperf", 6 | "author": { 7 | "name": "Gaël Métais", 8 | "email": "gael@gaelmetais.com", 9 | "url": "www.gaelmetais.com" 10 | }, 11 | "repository": { 12 | "type": "git", 13 | "url": "git://github.com/gmetais/grunt-devperf.git" 14 | }, 15 | "bugs": { 16 | "url": "https://github.com/gmetais/grunt-devperf/issues" 17 | }, 18 | "licenses": [ 19 | { 20 | "type": "MIT", 21 | "url": "https://github.com/gmetais/grunt-devperf/blob/master/LICENSE-MIT" 22 | } 23 | ], 24 | "engines": { 25 | "node": ">= 0.8.0" 26 | }, 27 | "devDependencies": { 28 | "grunt-contrib-jshint": "^0.10.0", 29 | "grunt-contrib-nodeunit": "^0.4.1", 30 | "grunt-contrib-clean": "^0.6.0", 31 | "grunt": "^0.4.4" 32 | }, 33 | "peerDependencies": { 34 | "grunt": "^0.4.4" 35 | }, 36 | "dependencies": { 37 | "grunt-phantomas": "0.10.0", 38 | "grunt-open": "^0.2.3" 39 | }, 40 | "keywords": [ 41 | "gruntplugin", 42 | "phantomas", 43 | "performance", 44 | "metrics", 45 | "phantomjs" 46 | ] 47 | } 48 | -------------------------------------------------------------------------------- /test/devperf_test.js: -------------------------------------------------------------------------------- 1 | 'use strict'; 2 | 3 | var grunt = require('grunt'); 4 | 5 | /* 6 | ======== A Handy Little Nodeunit Reference ======== 7 | https://github.com/caolan/nodeunit 8 | 9 | Test methods: 10 | test.expect(numAssertions) 11 | test.done() 12 | Test assertions: 13 | test.ok(value, [message]) 14 | test.equal(actual, expected, [message]) 15 | test.notEqual(actual, expected, [message]) 16 | test.deepEqual(actual, expected, [message]) 17 | test.notDeepEqual(actual, expected, [message]) 18 | test.strictEqual(actual, expected, [message]) 19 | test.notStrictEqual(actual, expected, [message]) 20 | test.throws(block, [error], [message]) 21 | test.doesNotThrow(block, [error], [message]) 22 | test.ifError(value) 23 | */ 24 | 25 | exports.devperf = { 26 | setUp: function(done) { 27 | // setup here if necessary 28 | done(); 29 | }, 30 | default_options: function(test) { 31 | test.expect(1); 32 | 33 | var actual = grunt.file.read('tmp/default_options'); 34 | var expected = grunt.file.read('test/expected/default_options'); 35 | test.equal(actual, expected, 'should describe what the default behavior is.'); 36 | 37 | test.done(); 38 | }, 39 | custom_options: function(test) { 40 | test.expect(1); 41 | 42 | var actual = grunt.file.read('tmp/custom_options'); 43 | var expected = grunt.file.read('test/expected/custom_options'); 44 | test.equal(actual, expected, 'should describe what the custom option(s) behavior is.'); 45 | 46 | test.done(); 47 | }, 48 | }; 49 | -------------------------------------------------------------------------------- /tasks/front/assets/main.css: -------------------------------------------------------------------------------- 1 | html { 2 | height: 100%; 3 | width: 100%; 4 | } 5 | body { 6 | /* Background and console styles from Eric Bidelman (ericbidelman@chromium.org) */ 7 | /* http://www.htmlfivewow.com/demos/terminal/terminal.html */ 8 | background: black; 9 | background: radial-gradient(center center, contain, rgba(0,150,0,.5), black) center center no-repeat, black; /*center center for the gradient scrolls with the page :(*/ 10 | background: -webkit-radial-gradient(center center, contain, rgba(0,150,0,.5), black) center center no-repeat, black; 11 | background: -moz-radial-gradient(center center, contain, rgba(0,150,0,.5), black) center center no-repeat, black; 12 | background: -ms-radial-gradient(center center, contain, rgba(0,150,0,.5), black) center center no-repeat, black; 13 | background: -o-radial-gradient(center center, contain, rgba(0,150,0,.5), black) center center no-repeat, black; 14 | background-size: 110% 100%; 15 | background-attachment: fixed; 16 | 17 | color: #0F0; 18 | font-family: "Andale Mono", AndaleMono, monospace; 19 | font-size: 13px; 20 | min-height: 100%; 21 | overflow-x: hidden; 22 | } 23 | *::-moz-selection {color: yellow; background: red;} 24 | *::selection {color: yellow; background: red;} 25 | 26 | #interlace { 27 | position: absolute; 28 | left: 0; 29 | top: 0; 30 | background: url(interlace.png) top left repeat, rgba(255,255,255,0.5); 31 | width: 100%; 32 | height: 100%; 33 | opacity: 0.2; 34 | z-index: 10; 35 | pointer-events: none; 36 | } 37 | h1, h2, h3, h4, h4, p, ul, li { 38 | font-size: 1em; 39 | font-weight: normal; 40 | margin: 0; 41 | padding: 0; 42 | list-style-position: inside; 43 | list-style-type: none; 44 | } 45 | .green { 46 | color: lime; 47 | } 48 | .red { 49 | color: red; 50 | } 51 | .cyan { 52 | color: cyan; 53 | } 54 | .magenta { 55 | color: magenta; 56 | } 57 | .yellow { 58 | color: yellow; 59 | } 60 | .white { 61 | color: white; 62 | } 63 | .black { 64 | color: black; 65 | } 66 | .red-background { 67 | background: red; 68 | } 69 | .green-background { 70 | background: lime; 71 | } 72 | .magenta-background { 73 | background: magenta; 74 | } 75 | .cyan-background { 76 | background: cyan; 77 | } 78 | .yellow-background { 79 | background: yellow; 80 | } 81 | 82 | 83 | .blink { 84 | background-color: green; 85 | -webkit-animation: blink 1s steps(2, start) infinite; 86 | animation: blink 1s steps(2, start) infinite; 87 | } 88 | @-webkit-keyframes blink { 89 | to { 90 | visibility: hidden; 91 | } 92 | } 93 | @keyframes blink { 94 | to { 95 | visibility: hidden; 96 | } 97 | } 98 | 99 | 100 | .page .separator { 101 | width: 100%; 102 | overflow: hidden; 103 | } 104 | .page .separator:after { 105 | content: "*********************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************"; 106 | } 107 | .page .timeCompare { 108 | display: table; 109 | } 110 | .page .timeCompare .left, 111 | .page .timeCompare .right { 112 | display: table-cell; 113 | } 114 | .page .timeCompare .left { 115 | text-align: right; 116 | } 117 | .page .timeCompare .right { 118 | text-align: left; 119 | } 120 | .page .timeCompare .meter { 121 | display: table-cell; 122 | } 123 | .page .filesRepartition { 124 | display: table; 125 | } 126 | .page .filesRepartition .row { 127 | display: table-row; 128 | } 129 | .page .filesRepartition .row > div { 130 | display: table-cell; 131 | text-align: center; 132 | vertical-align: middle; 133 | padding-right: 24px; 134 | } 135 | .page .graph { 136 | position: relative; 137 | } 138 | .page .graph > div { 139 | position: absolute; 140 | top: 5px; 141 | left: 16px; 142 | width: 680px; 143 | height: 124px; 144 | } 145 | -------------------------------------------------------------------------------- /tasks/front/index.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | > devperf 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |
16 |

> devperf --author=gaelmetais

17 |
18 |
19 |
20 | >   21 | 22 | 106 | 111 | 112 | -------------------------------------------------------------------------------- /tasks/front/assets/main.js: -------------------------------------------------------------------------------- 1 | $(document).ready(function() { 2 | 3 | function init() { 4 | loadData(settings, results); 5 | } 6 | 7 | function renderPages(data, conf) { 8 | var source = $("#page-template").html(); 9 | var template = Handlebars.compile(source); 10 | var html = template(data); 11 | 12 | html += "

Complete."; 13 | 14 | $("#pageContainer").append(html); 15 | } 16 | 17 | function loadData(conf, data) { 18 | 19 | var graphs = [], i, imax, j, jmax; 20 | 21 | for (i=0, imax=data.pages.length ; i -1 && pageData[warning.variable] > warning.limit) { 32 | pageWarnings.push({ 33 | message: warning.message, 34 | value: pageData[warning.variable] 35 | }); 36 | } 37 | } 38 | data.pages[i].warnings = pageWarnings; 39 | 40 | // Graphs data fetching 41 | var graphSettings = getGraphSettings(pageData.timingsHistory.length); 42 | 43 | var ttfb = []; 44 | var odrt = []; 45 | var wolt = []; 46 | var htcd = []; 47 | for (j=0, jmax=pageData.timingsHistory.length; j'; 121 | 122 | $.each(this.points, function(i, point) { 123 | s += '
' + point.series.name + ': ' + point.y + 'ms'; 124 | }); 125 | 126 | return s; 127 | }, 128 | shared: true 129 | }, 130 | plotOptions: { 131 | line: { 132 | marker: { 133 | enabled: (numberOfValues === 1), 134 | symbol: 'diamond', 135 | radius: 2, 136 | states: { 137 | hover: {enabled: true} 138 | } 139 | } 140 | }, 141 | series: { 142 | animation: false 143 | } 144 | } 145 | }); 146 | } 147 | 148 | $(document).ready(init); 149 | }); 150 | 151 | Handlebars.registerHelper('meter', function(value, max, low, high) { 152 | var charNumber = 60; 153 | var percentage = Math.round((value / max) * charNumber); 154 | var gauge = []; 155 | 156 | var className = "black yellow-background"; 157 | if (value < low) { 158 | className = "black green-background"; 159 | } else if (value > high) { 160 | className = "black red-background"; 161 | } 162 | 163 | for (var j=0 ; j.'); 166 | } else { 167 | gauge.push('.'); 168 | } 169 | } 170 | return new Handlebars.SafeString("[" + gauge.join('') + "]"); 171 | }); 172 | 173 | Handlebars.registerHelper('round', function(value) { 174 | return Math.round(value); 175 | }); -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # grunt-devperf 2 | 3 | 4 | ## Important! 5 | **This project is not maintained anymore.** Please have a look at [Yellow Lab Tools](https://github.com/gmetais/YellowLabTools) and [grunt-yellowlabtools](https://github.com/gmetais/grunt-yellowlabtools) for replacements. 6 | 7 | 8 | Helps front-end developers to reach a good quality and good performances, based on [phantomas](https://github.com/macbre/phantomas) and [grunt-phantomas](https://github.com/stefanjudis/grunt-phantomas). 9 | 10 | Day after day, while working on your project, keep an eye on performance metrics and get warnings for things you should optimize. 11 | 12 | [![Dependency Status](https://gemnasium.com/gmetais/grunt-devperf.svg)](https://gemnasium.com/gmetais/grunt-devperf) 13 | 14 | 15 | ## Install method 1: i don't care about Grunt 16 | 17 | **Use this minimalist installation if you just want to launch some quick tests.** 18 | 19 | You need NodeJS v0.8 or higher. If you don't have it, go to http://nodejs.org and grab the latest version. 20 | 21 | 1) Create a directory for your grunt-devperf installation, anywhere you want. Let's call it `devperf`: 22 | ```shell 23 | mkdir devperf 24 | cd devperf 25 | ``` 26 | 27 | 2) Install Grunt globally: 28 | ```shell 29 | npm install grunt-cli -g 30 | ``` 31 | 32 | 3) Install grunt-devperf locally: 33 | ```shell 34 | npm install grunt-devperf 35 | ``` 36 | 37 | 4) Copy the example `Gruntfile.js` to the root of your `devperf` directory: 38 | ```shell 39 | cp node_modules/grunt-devperf/demo/smallest-config/Gruntfile.js ./ 40 | ``` 41 | 42 | 5) Then edit this copy of `Gruntfile.js` to insert your own list of URLs. 43 | 44 | **It's done!** You can launch your first test with this command: 45 | ```shell 46 | grunt 47 | ``` 48 | 49 | 50 | ## Install method 2: i already love Grunt 51 | 52 | This plugin requires Grunt `~0.4.4`. 53 | 54 | Install the plugin: 55 | ```shell 56 | npm install grunt-devperf --save-dev 57 | ``` 58 | 59 | Once the plugin has been installed, it may be enabled inside your Gruntfile with this line of JavaScript: 60 | 61 | ```js 62 | grunt.loadNpmTasks('grunt-devperf'); 63 | ``` 64 | 65 | I recommand using it as a part of your Continuous Integration system, but you can also simply use it locally while developping. 66 | 67 | 68 | ## Setup the "devperf" task 69 | 70 | ### Overview 71 | In your project's Gruntfile, add a section named `devperf` to the data object passed into `grunt.initConfig()`. 72 | 73 | ```js 74 | grunt.initConfig({ 75 | devperf: { 76 | options: { 77 | urls: [ 78 | 'http://www.google.com' 79 | ] 80 | } 81 | } 82 | }); 83 | ``` 84 | 85 | ### Options 86 | 87 | #### options.urls 88 | Type: `Array of Strings` 89 | Default value: `['http://www.google.fr']` 90 | 91 | The list of URLs you want to test. Don't forget the protocol (http:// or https://), even on localhost. 92 | 93 | #### options.numberOfRuns 94 | Type: `Integer` 95 | Default value: `5` 96 | 97 | The number of times you want phantomas to call each page. 98 | A higher number of runs could give a better accuracy, but note that they are run in parallel and that your machine's bandwith may suffer. 99 | 100 | #### options.timeout 101 | Type: `Integer` 102 | Default value: `120` 103 | 104 | The time after which phantomas should cancel a run. 105 | 106 | #### options.openResults 107 | Type: `Boolean` 108 | Default value: `false` 109 | 110 | Automatically opens the browser on the results page when the devperf task is finished. 111 | 112 | #### options.resultsFolder 113 | Type: `String` 114 | Default value: `./devperf` 115 | 116 | This is the folder where the results will be generated, including grunt-phantomas reports. 117 | It can be relative to your project: `./my-folder` (you might want to add this folder to your `.gitignore` file). 118 | Or it can be anywhere else in your file system: `/var/www/devperf` 119 | 120 | 121 | ### Usage Examples 122 | 123 | In this example, several Urls are tested 124 | 125 | ```js 126 | grunt.initConfig({ 127 | devperf: { 128 | options: { 129 | urls: [ 130 | 'http://www.google.com', 131 | 'http://www.yahoo.com', 132 | 'http://www.github.com', 133 | 'http://www.facebook.com' 134 | ], 135 | numberOfRuns: 5, 136 | timeout: 120, 137 | openResults: true, 138 | resultsFolder: './devperf' 139 | } 140 | } 141 | }); 142 | ``` 143 | Then, open the `index.html` file with your browser to see the results. It is located in the results folder (`./devperf/`by default). 144 | 145 | 146 | Results snapshot: 147 | ![grunt-devperf example results](https://raw.github.com/gmetais/grunt-devperf/master/demo/img/results.png) 148 | 149 | About the results: 150 | - Yes it looks like a console but it's a web page! 151 | - Some metrics might have decimals, because they are averages of multiple runs. 152 | - The link to the grunt-phantomas report will give you tons of details, very helpful for debugging. 153 | - The files size are not reliable (sometimes gzipped, sometimes not). Check issue #6. 154 | 155 | 156 | 157 | ### Warnings list 158 | 159 | #### Default list of warnings 160 | 161 | When a metric is greater than the limit, the message is displayed. 162 | 163 | Metric | Limit | Message 164 | --------------------------|:-------:|-------------------------------------------------------------------- 165 | requests | 200 | Too many requests, i guess your site is slow, isn't it? 166 | cssCount | 6 | Too many CSS files, use concatenation 167 | jsCount | 12 | Too many JS files, use concatenation 168 | imageCount | 30 | Too many images, use lazyloading 169 | smallImages | 20 | Too many small images (<2kB), build sprites 170 | imageSize | 512000 | Total image size (bytes) is too high, try image optimisation 171 | webfontCount | 4 | Too many custom fonts, tell the designer you don't want that 172 | notFound | 0 | Number of 404 errors 173 | multipleRequests | 1 | Some static assets are requested multiple times 174 | imagesWithoutDimensions | 5 | Number of images without dimensions 175 | commentsSize | 1000 | Reduce size of comments in HTML 176 | whiteSpacesSize | 8000 | Reduce the number of whitespaces in HTML 177 | DOMelementsCount | 2000 | Reduce the number of DOM elements 178 | documentWriteCalls | 0 | Remove all document.write() calls 179 | jsErrors | 0 | Number of Javascript errors 180 | consoleMessages | 0 | Remove console.log or console.*whatever* 181 | DOMqueries | 200 | Reduce number of DOM queries 182 | DOMqueriesDuplicated | 30 | Many duplicated DOM queries, try to save results into variables 183 | DOMinserts | 100 | Reduce number of DOM insertions 184 | jQuerySizzleCalls | 300 | Reduce number of Sizzle calls (= jQuery DOM queries) 185 | headersSentSize | 20000 | Reduce size of headers sent (cookies?) 186 | 187 | 188 | #### Modifying the warnings 189 | 190 | In the Gruntfile, you can change any of them by adding a `warnings` option this way: 191 | 192 | ```js 193 | grunt.initConfig({ 194 | devperf: { 195 | options: { 196 | urls: [ 197 | 'http://www.google.com' 198 | ], 199 | warnings: [ 200 | { 201 | // Changing the limit for this variable 202 | variable : "jsErrors", 203 | limit : 42, 204 | }, 205 | { 206 | // Changing the message 207 | variable : "jQuerySizzleCalls", 208 | message : "I like this message best" 209 | }, 210 | { 211 | // Changing the limit and the message 212 | variable : "DOMelementsCount", 213 | limit : 200, 214 | message: "DOM elements number is my big issue so i reduced the limit" 215 | }, 216 | { 217 | // Disabling a warning (-1 is infinite) 218 | variable : "consoleMessages", 219 | limit : -1 220 | }, 221 | { 222 | // Adding one of the numerous Phantomas variables not handled by grunt-devperf 223 | variable : "jsonCount", 224 | limit : 5, 225 | message : "I really care about having a small number of JSON requests" 226 | } 227 | ] 228 | } 229 | } 230 | }); 231 | ``` 232 | 233 | You can find the complete list of Phantomas variables and their descriptions [here](https://github.com/macbre/phantomas#metrics). 234 | If you think one of these variables deserves a warning in grunt-devperf, don't hesitate to open an issue! 235 | 236 | 237 | ### Advanced Phantomas options 238 | 239 | #### options.phantomasOptions 240 | Type: `Object` 241 | Default value: `{}` 242 | 243 | Use this if you need to send parameters to `phantomas`. You can find the list of parameters [here](https://github.com/macbre/phantomas#parameters). You can enable some features such as proxy, authentification or domain blocking. 244 | 245 | Example: 246 | ```js 247 | grunt.initConfig({ 248 | devperf: { 249 | options: { 250 | urls: [ 251 | 'http://www.google.com' 252 | ], 253 | phantomasOptions: { 254 | 'proxy': 'localhost:8080', 255 | 'no-externals': true 256 | } 257 | } 258 | } 259 | }); 260 | ``` 261 | 262 | 263 | ## Contributing 264 | This project is in early stage (beta). You can help by reporting any issue, giving your feedback or coding new functionnalities. 265 | 266 | 267 | ## TODO 268 | - Write tests 269 | - Create profiles for phones and tablets (force viewport and UA, decrease some of the limits) 270 | 271 | 272 | ## Author 273 | Gaël Métais. I'm a webperf freelance based in Paris. I can also help your company about Web Performances, visit [my website](https://www.gaelmetais.com). 274 | -------------------------------------------------------------------------------- /tasks/devperf.js: -------------------------------------------------------------------------------- 1 | /* 2 | * grunt-devperf 3 | * https://github.com/gaelmetais/grunt-devperf 4 | * 5 | * Copyright (c) 2014 Gaël Métais 6 | * Licensed under the MIT license. 7 | */ 8 | 9 | /*jslint node: true */ 10 | 'use strict'; 11 | 12 | var fs = require('fs'); 13 | var path = require('path'); 14 | 15 | module.exports = function(grunt) { 16 | require('grunt-phantomas/tasks/phantomas')(grunt); 17 | 18 | grunt.registerTask('devperfAfter', 'Task to run after phantomas', function() { 19 | 20 | grunt.task.requires('phantomas'); 21 | 22 | var pages = []; 23 | var options = this.options({}); 24 | options.urls.forEach(function(url) { 25 | var folderName = sanitizeFolderName(url); 26 | 27 | var page = { 28 | url : url, 29 | timingsHistory : [], 30 | gruntPhantomasReport : folderName + '/index.html' 31 | }; 32 | 33 | var pageDataFolder = options.resultsFolder + '/' + folderName + '/data'; 34 | grunt.log.writeln('Looking for result files in ' + pageDataFolder); 35 | 36 | var pageJsonFiles = fs.readdirSync(pageDataFolder); 37 | 38 | pageJsonFiles.filter(function(file){ 39 | return file.indexOf('.json') == 13; 40 | }).sort(function(a, b) { 41 | return parseInt(a, 10) < parseInt(b, 10) ? 1 : -1; 42 | }).forEach(function(jsonFileName, key) { 43 | var timestamp = jsonFileName.substring(0, 13); 44 | 45 | var filePath = pageDataFolder + '/' + jsonFileName; 46 | var content = fs.readFileSync(filePath); 47 | var json = JSON.parse(content); 48 | 49 | // Avoid problems with the old json file format of grunt-phantomas (before v0.7.0) by ignoring them 50 | if (json.metrics) { 51 | 52 | // Get all metrics for most recent data 53 | if (key === 0) { 54 | for (var metric in json.metrics) { 55 | page[metric] = json.metrics[metric].median; 56 | } 57 | } 58 | 59 | // Get history for each 60 | page.timingsHistory.push({ 61 | 'timestamp': timestamp, 62 | 'timeToFirstByte': json.metrics.timeToFirstByte.average, 63 | 'domInteractive': (json.metrics.domInteractive || json.metrics.onDOMReadyTime).average, 64 | 'domComplete': (json.metrics.domComplete || json.metrics.windowOnLoadTime).average, 65 | 'httpTrafficCompleted': json.metrics.httpTrafficCompleted.average 66 | }); 67 | 68 | } 69 | }); 70 | 71 | pages.push(page); 72 | }); 73 | 74 | // Write result file 75 | fs.writeFileSync(options.resultsFolder + '/results.json', JSON.stringify({pages: pages}, null, 4)); 76 | grunt.log.writeln('File "' + options.resultsFolder + '/results.json' + '" created.'); 77 | 78 | // Write settings file for the front 79 | var settingsFilePath = options.resultsFolder + '/settings.json'; 80 | fs.writeFileSync(settingsFilePath, JSON.stringify(options, null, 4)); 81 | grunt.log.writeln('File "' + settingsFilePath + '" created.'); 82 | 83 | // Copy assets 84 | var frontFilesPath = __dirname + '/front'; 85 | grunt.file.copy(frontFilesPath + '/assets/main.js', options.resultsFolder + '/assets/main.js'); 86 | grunt.file.copy(frontFilesPath + '/assets/main.css', options.resultsFolder + '/assets/main.css'); 87 | grunt.file.copy(frontFilesPath + '/assets/interlace.png', options.resultsFolder + '/assets/interlace.png'); 88 | grunt.file.copy(frontFilesPath + '/assets/handlebars-v1.3.0.js', options.resultsFolder + '/assets/handlebars-v1.3.0.js'); 89 | grunt.file.copy(frontFilesPath + '/assets/jquery-2.1.0.min.js', options.resultsFolder + '/assets/jquery-2.1.0.min.js'); 90 | grunt.file.copy(frontFilesPath + '/assets/highcharts.js', options.resultsFolder + '/assets/highcharts.js'); 91 | grunt.log.writeln('Assets copied.'); 92 | 93 | // Write index.html 94 | var indexHtml = grunt.file.read(frontFilesPath + '/index.html'); 95 | indexHtml = indexHtml.replace('/*%%RESULTS%%*/', 'var results = ' + JSON.stringify({pages: pages}, null, 4)); 96 | indexHtml = indexHtml.replace('/*%%SETTINGS%%*/', 'var settings = ' + JSON.stringify(options, null, 4)); 97 | var indexPath = options.resultsFolder + '/index.html'; 98 | grunt.file.write(indexPath, indexHtml); 99 | 100 | // Open the index.html file in browser (option) 101 | if (options.openResults) { 102 | require('grunt-open/tasks/open')(grunt); 103 | 104 | // Inject the config into devperfAfter task 105 | grunt.config.set('open.devperf_auto_task', {path: indexPath}); 106 | grunt.task.run('open:devperf_auto_task'); 107 | } 108 | }); 109 | 110 | 111 | // Executes the sequence (phantomas, then devperf) 112 | grunt.registerTask('devperf', 'Helps front-end developers to maintain a good quality, based on phantomas and grunt-phantomas.', function() { 113 | 114 | // Merge task-specific and/or target-specific options with these defaults. 115 | var options = this.options({ 116 | urls: [ 117 | 'http://www.google.fr' 118 | ], 119 | warnings: [], 120 | numberOfRuns: 5, 121 | timeout: 120, 122 | openResults: false, 123 | resultsFolder: './devperf', 124 | phantomasOptions: {} 125 | }); 126 | 127 | var defaultWarnings = [ 128 | { 129 | variable : "requests", 130 | limit : 200, 131 | message: "Too many requests, i guess your site is slow, isn't it?" 132 | }, 133 | { 134 | variable : "cssCount", 135 | limit : 6, 136 | message: "Too many CSS files, use concatenation" 137 | }, 138 | { 139 | variable : "jsCount", 140 | limit : 12, 141 | message: "Too many JS files, use concatenation" 142 | }, 143 | { 144 | variable : "imageCount", 145 | limit : 30, 146 | message: "Too many images, use lazyloading" 147 | }, 148 | { 149 | variable : "smallImages", 150 | limit : 20, 151 | message: "Too many small images, build sprites" 152 | }, 153 | { 154 | variable : "imageSize", 155 | limit : 512000, 156 | message: "Total image size (bytes) is too high, try image optimisation" 157 | }, 158 | { 159 | variable : "webfontCount", 160 | limit : 4, 161 | message: "Too many custom fonts, tell the designer you don't want that" 162 | }, 163 | { 164 | variable : "notFound", 165 | limit : 0, 166 | message: "Number of 404 errors" 167 | }, 168 | { 169 | variable : "multipleRequests", 170 | limit : 1, 171 | message: "Some static assets are requested multiple times" 172 | }, 173 | { 174 | variable : "imagesWithoutDimensions", 175 | limit : 5, 176 | message: "Number of images without dimensions" 177 | }, 178 | { 179 | variable : "commentsSize", 180 | limit : 1000, 181 | message: "Reduce size of comments in HTML" 182 | }, 183 | { 184 | variable : "whiteSpacesSize", 185 | limit : 8000, 186 | message: "Reduce the number of whitespaces in HTML" 187 | }, 188 | { 189 | variable : "DOMelementsCount", 190 | limit : 2000, 191 | message: "Reduce the number of DOM elements" 192 | }, 193 | { 194 | variable : "documentWriteCalls", 195 | limit : 0, 196 | message: "Remove all document.write() calls" 197 | }, 198 | { 199 | variable : "jsErrors", 200 | limit : 0, 201 | message: "Number of Javascript errors" 202 | }, 203 | { 204 | variable : "consoleMessages", 205 | limit : 0, 206 | message: "Remove console.log or console.*whatever*" 207 | }, 208 | { 209 | variable : "DOMqueries", 210 | limit : 200, 211 | message: "Reduce number of DOM queries" 212 | }, 213 | { 214 | variable : "DOMqueriesDuplicated", 215 | limit : 30, 216 | message: "Many duplicated DOM queries, try to save results into variables" 217 | }, 218 | { 219 | variable : "DOMinserts", 220 | limit : 100, 221 | message: "Reduce number of DOM insertions" 222 | }, 223 | { 224 | variable : "jQuerySizzleCalls", 225 | limit : 300, 226 | message: "Reduce number of Sizzle calls (= jQuery DOM queries)" 227 | }, 228 | { 229 | variable : "headersSentSize", 230 | limit : 20000, 231 | message: "Reduce size of headers sent (cookies?)" 232 | } 233 | ]; 234 | 235 | // Merge user defined warnings with defaults 236 | defaultWarnings.forEach(function(defaultWarn) { 237 | var found = false; 238 | options.warnings.forEach(function(userWarn) { 239 | if (userWarn.variable === defaultWarn.variable) { 240 | found = true; 241 | if (userWarn.message === undefined) { 242 | userWarn.message = defaultWarn.message; 243 | } else if (userWarn.limit === undefined) { 244 | userWarn.limit = defaultWarn.limit; 245 | } else if (userWarn.message === undefined && userWarn.limit === undefined) { 246 | grunt.log.error('Warning ' + userWarn.variable + ' is misconfigured, it has been ignored.'); 247 | userWarn.limit = -1; 248 | userWarn.message = "Ignored"; 249 | } 250 | } 251 | }); 252 | if (!found) { 253 | options.warnings.push(defaultWarn); 254 | } 255 | }); 256 | 257 | // Copy these warnings to the grunt-phantomas assertions style 258 | var phantomasAssertions = {}; 259 | options.warnings.forEach(function(warning) { 260 | if (warning.limit > 0) { 261 | phantomasAssertions[warning.variable] = warning.limit; 262 | } 263 | }); 264 | 265 | // Inject the phantomas config into grunt config 266 | var phantomasConfig = {}; 267 | options.urls.forEach(function(url) { 268 | var runConfig = { 269 | options: { 270 | indexPath: options.resultsFolder + '/' + sanitizeFolderName(url) + '/', 271 | url: url, 272 | numberOfRuns: options.numberOfRuns, 273 | options: options.phantomasOptions, 274 | assertions: phantomasAssertions 275 | } 276 | }; 277 | runConfig.options.options.timeout = options.timeout; 278 | phantomasConfig[sanitizeFolderName(url)] = runConfig; 279 | }); 280 | grunt.config.set('phantomas', phantomasConfig); 281 | grunt.task.run('phantomas'); 282 | 283 | // Inject the config into devperfAfter task 284 | grunt.config.set('devperfAfter', {options: options}); 285 | grunt.task.run('devperfAfter'); 286 | }); 287 | }; 288 | 289 | function sanitizeFolderName(path) { 290 | var folderName = path.replace(/[\/\.\?\:\-\&\%\=]/g, ''); 291 | // Shorten name if it's too long 292 | if (folderName.length > 100) { 293 | folderName = folderName.substring(0, 100); 294 | } 295 | return folderName; 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