我正在使用最新的Yeoman Angular生成器来启动一个项目。我想使用SASS和Compass,这是Yeoman默认提供的。
Compass的一个大缺点就是它非常慢。我已经包含了Twitter Bootstrap(SASS版本),在我的样式文件夹中有三个`.scss`文件,编译大约需要10-12秒。当使用实时监控时,速度略快(大约1秒)。
但是每次更改样式文件都要等待10-12秒,这太疯狂了。我找到了一些帖子(其中大多数是一年前的),但它们没有对我有所帮助。我还发现了这个项目 https://github.com/sindresorhus/grunt-sass,它用C++版本替换了原始的 https://github.com/gruntjs/grunt-contrib-sass,而不是使用Ruby编译。但缺点是它不支持Compass。
我希望有人能帮助我加速。 这是我的设置:
一个文件更改显示了这个日志:
Compass的一个大缺点就是它非常慢。我已经包含了Twitter Bootstrap(SASS版本),在我的样式文件夹中有三个`.scss`文件,编译大约需要10-12秒。当使用实时监控时,速度略快(大约1秒)。
但是每次更改样式文件都要等待10-12秒,这太疯狂了。我找到了一些帖子(其中大多数是一年前的),但它们没有对我有所帮助。我还发现了这个项目 https://github.com/sindresorhus/grunt-sass,它用C++版本替换了原始的 https://github.com/gruntjs/grunt-contrib-sass,而不是使用Ruby编译。但缺点是它不支持Compass。
我希望有人能帮助我加速。 这是我的设置:
我正在使用grunt serve
启动我的grunt服务器,实时监控*.js, *.scss
文件,并在文件更改时触发重新加载。这是我的Gruntfile.js
:
// Generated on 2014-06-16 using generator-angular 0.9.0-1
'use strict';
// # Globbing
// for performance reasons we're only matching one level down:
// 'test/spec/{,*/}*.js'
// use this if you want to recursively match all subfolders:
// 'test/spec/**/*.js'
module.exports = function (grunt) {
// Load grunt tasks automatically
require('load-grunt-tasks')(grunt);
// Time how long tasks take. Can help when optimizing build times
require('time-grunt')(grunt);
// Configurable paths for the application
var appConfig = {
app: require('./bower.json').appPath || 'app',
dist: 'dist'
};
// Define the configuration for all the tasks
grunt.initConfig({
// Project settings
yeoman: appConfig,
// Watches files for changes and runs tasks based on the changed files
watch: {
bower: {
files: ['bower.json'],
tasks: ['wiredep']
},
js: {
files: ['<%= yeoman.app %>/scripts/{,*/}*.js'],
tasks: ['newer:jshint:all'],
options: {
livereload: '<%= connect.options.livereload %>'
}
},
jsTest: {
files: ['test/spec/{,*/}*.js'],
tasks: ['newer:jshint:test', 'karma']
},
compass: {
files: ['<%= yeoman.app %>/styles/{,*/}*.{scss,sass}'],
tasks: ['compass:server', 'autoprefixer'],
options: {
spawn: false,
}
},
gruntfile: {
files: ['Gruntfile.js']
},
livereload: {
options: {
livereload: '<%= connect.options.livereload %>'
},
files: [
'<%= yeoman.app %>/{,*/}*.html',
'.tmp/styles/{,*/}*.css',
'<%= yeoman.app %>/images/{,*/}*.{png,jpg,jpeg,gif,webp,svg}'
]
}
},
// The actual grunt server settings
connect: {
options: {
port: 9000,
// Change this to '0.0.0.0' to access the server from outside.
hostname: 'localhost',
livereload: 35729
},
livereload: {
options: {
open: false,
middleware: function (connect) {
return [
connect.static('.tmp'),
connect().use(
'/bower_components',
connect.static('./bower_components')
),
connect.static(appConfig.app)
];
}
}
},
test: {
options: {
port: 9001,
middleware: function (connect) {
return [
connect.static('.tmp'),
connect.static('test'),
connect().use(
'/bower_components',
connect.static('./bower_components')
),
connect.static(appConfig.app)
];
}
}
},
dist: {
options: {
open: false,
base: '<%= yeoman.dist %>'
}
}
},
// Make sure code styles are up to par and there are no obvious mistakes
jshint: {
options: {
jshintrc: '.jshintrc',
reporter: require('jshint-stylish')
},
all: {
src: [
'Gruntfile.js',
'<%= yeoman.app %>/scripts/{,*/}*.js'
]
},
test: {
options: {
jshintrc: 'test/.jshintrc'
},
src: ['test/spec/{,*/}*.js']
}
},
// Empties folders to start fresh
clean: {
dist: {
files: [{
dot: true,
src: [
'.tmp',
'<%= yeoman.dist %>/{,*/}*',
'!<%= yeoman.dist %>/.git*'
]
}]
},
server: '.tmp'
},
// Add vendor prefixed styles
autoprefixer: {
options: {
browsers: ['last 1 version']
},
dist: {
files: [{
expand: true,
cwd: '.tmp/styles/',
src: '{,*/}*.css',
dest: '.tmp/styles/'
}]
}
},
// Automatically inject Bower components into the app
wiredep: {
app: {
src: ['<%= yeoman.app %>/index.html'],
ignorePath: new RegExp('^<%= yeoman.app %>/|../')
},
sass: {
src: ['<%= yeoman.app %>/styles/{,*/}*.{scss,sass}'],
ignorePath: /(\.\.\/){1,2}bower_components\//
}
},
// Compiles Sass to CSS and generates necessary files if requested
compass: {
options: {
sassDir: '<%= yeoman.app %>/styles',
cssDir: '.tmp/styles',
generatedImagesDir: '.tmp/images/generated',
imagesDir: '<%= yeoman.app %>/images',
javascriptsDir: '<%= yeoman.app %>/scripts',
fontsDir: '<%= yeoman.app %>/styles/fonts',
importPath: './bower_components',
httpImagesPath: '/images',
httpGeneratedImagesPath: '/images/generated',
httpFontsPath: '/styles/fonts',
relativeAssets: false,
assetCacheBuster: false,
raw: 'Sass::Script::Number.precision = 10\n'
},
dist: {
options: {
generatedImagesDir: '<%= yeoman.dist %>/images/generated'
}
},
server: {
options: {
debugInfo: true
}
}
},
// Renames files for browser caching purposes
filerev: {
dist: {
src: [
'<%= yeoman.dist %>/scripts/{,*/}*.js',
'<%= yeoman.dist %>/styles/{,*/}*.css',
'<%= yeoman.dist %>/images/{,*/}*.{png,jpg,jpeg,gif,webp,svg}',
'<%= yeoman.dist %>/styles/fonts/*'
]
}
},
// Reads HTML for usemin blocks to enable smart builds that automatically
// concat, minify and revision files. Creates configurations in memory so
// additional tasks can operate on them
useminPrepare: {
html: '<%= yeoman.app %>/index.html',
options: {
dest: '<%= yeoman.dist %>',
flow: {
html: {
steps: {
js: ['concat', 'uglifyjs'],
css: ['cssmin']
},
post: {}
}
}
}
},
// Performs rewrites based on filerev and the useminPrepare configuration
usemin: {
html: ['<%= yeoman.dist %>/{,*/}*.html'],
css: ['<%= yeoman.dist %>/styles/{,*/}*.css'],
options: {
assetsDirs: ['<%= yeoman.dist %>','<%= yeoman.dist %>/images']
}
},
// The following *-min tasks will produce minified files in the dist folder
// By default, your `index.html`'s <!-- Usemin block --> will take care of
// minification. These next options are pre-configured if you do not wish
// to use the Usemin blocks.
// cssmin: {
// dist: {
// files: {
// '<%= yeoman.dist %>/styles/main.css': [
// '.tmp/styles/{,*/}*.css'
// ]
// }
// }
// },
// uglify: {
// dist: {
// files: {
// '<%= yeoman.dist %>/scripts/scripts.js': [
// '<%= yeoman.dist %>/scripts/scripts.js'
// ]
// }
// }
// },
// concat: {
// dist: {}
// },
imagemin: {
dist: {
files: [{
expand: true,
cwd: '<%= yeoman.app %>/images',
src: '{,*/}*.{png,jpg,jpeg,gif}',
dest: '<%= yeoman.dist %>/images'
}]
}
},
svgmin: {
dist: {
files: [{
expand: true,
cwd: '<%= yeoman.app %>/images',
src: '{,*/}*.svg',
dest: '<%= yeoman.dist %>/images'
}]
}
},
htmlmin: {
dist: {
options: {
collapseWhitespace: true,
conservativeCollapse: true,
collapseBooleanAttributes: true,
removeCommentsFromCDATA: true,
removeOptionalTags: true
},
files: [{
expand: true,
cwd: '<%= yeoman.dist %>',
src: ['*.html', 'views/{,*/}*.html'],
dest: '<%= yeoman.dist %>'
}]
}
},
// ngmin tries to make the code safe for minification automatically by
// using the Angular long form for dependency injection. It doesn't work on
// things like resolve or inject so those have to be done manually.
ngmin: {
dist: {
files: [{
expand: true,
cwd: '.tmp/concat/scripts',
src: '*.js',
dest: '.tmp/concat/scripts'
}]
}
},
// Replace Google CDN references
cdnify: {
dist: {
html: ['<%= yeoman.dist %>/*.html']
}
},
// Copies remaining files to places other tasks can use
copy: {
dist: {
files: [{
expand: true,
dot: true,
cwd: '<%= yeoman.app %>',
dest: '<%= yeoman.dist %>',
src: [
'*.{ico,png,txt}',
'.htaccess',
'*.html',
'views/{,*/}*.html',
'images/{,*/}*.{webp}',
'fonts/*'
]
}, {
expand: true,
cwd: '.tmp/images',
dest: '<%= yeoman.dist %>/images',
src: ['generated/*']
}, {
expand: true,
cwd: '.',
src: 'bower_components/bootstrap-sass-official/vendor/assets/fonts/bootstrap/*',
dest: '<%= yeoman.dist %>'
}]
},
styles: {
expand: true,
cwd: '<%= yeoman.app %>/styles',
dest: '.tmp/styles/',
src: '{,*/}*.css'
}
},
// Run some tasks in parallel to speed up the build process
concurrent: {
server: [
'compass:server'
],
test: [
'compass'
],
dist: [
'compass:dist',
'imagemin',
'svgmin'
]
},
// Test settings
karma: {
unit: {
configFile: 'test/karma.conf.js',
singleRun: false
}
}
});
grunt.loadNpmTasks('grunt-sass');
grunt.registerTask('serve', 'Compile then start a connect web server', function (target) {
if (target === 'dist') {
return grunt.task.run(['build', 'connect:dist:keepalive']);
}
grunt.task.run([
'clean:server',
'wiredep',
'concurrent:server',
'autoprefixer',
'connect:livereload',
'watch'
]);
});
grunt.registerTask('server', 'DEPRECATED TASK. Use the "serve" task instead', function (target) {
grunt.log.warn('The `server` task has been deprecated. Use `grunt serve` to start a server.');
grunt.task.run(['serve:' + target]);
});
grunt.registerTask('test', [
'clean:server',
'autoprefixer',
'connect:test',
'karma'
]);
grunt.registerTask('build', [
'clean:dist',
'wiredep',
'useminPrepare',
'concurrent:dist',
'autoprefixer',
'concat',
'ngmin',
'copy:dist',
'cdnify',
'cssmin',
'uglify',
'filerev',
'usemin',
'htmlmin'
]);
grunt.registerTask('default', [
'newer:jshint',
'test',
'build'
]);
};
启动我的Grunt服务器时,我得到了这个输出:
Running "serve" task
Running "clean:server" (clean) task
Cleaning .tmp...OK
Running "wiredep:app" (wiredep) task
Running "wiredep:sass" (wiredep) task
Running "concurrent:server" (concurrent) task
Running "compass:server" (compass) task
directory .tmp/styles/
create .tmp/styles/colors.css (0.173s)
create .tmp/styles/main.css (5.485s)
create .tmp/styles/styles.css (5.725s)
Compilation took 11.39s
Done, without errors.
Execution Time (2014-06-17 13:43:30 UTC)
compass:server 12.9s ▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇ 100%
Total 12.9s
Running "autoprefixer:dist" (autoprefixer) task
File .tmp/styles/colors.css created.
File .tmp/styles/main.css created.
File .tmp/styles/styles.css created.
Running "connect:livereload" (connect) task
Started connect web server on http://localhost:9000
Running "watch" task
Waiting...
一个文件更改显示了这个日志:
>> File "app/styles/colors.scss" changed.
Running "compass:server" (compass) task
identical .tmp/styles/colors.css (0.033s)
overwrite .tmp/styles/main.css (4.074s)
overwrite .tmp/styles/styles.css (4.548s)
Compilation took 9.216s
Running "autoprefixer:dist" (autoprefixer) task
File .tmp/styles/colors.css created.
File .tmp/styles/main.css created.
File .tmp/styles/styles.css created.
Running "watch" task
Completed in 12.515s at Tue Jun 17 2014 15:48:47 GMT+0200 (CEST) - Waiting...
正如您所看到的,初始启动大约需要13秒,文件更改需要约9秒。
有什么想法可以加快速度吗?
更新
我稍微尝试了一下,这可能会有所帮助。它不能解决编译速度慢的问题本身,但可以加快速度:
- 如果您不需要Bootstrap SASS版本,请跳过并切换到普通的CSS版本。这将显著减少编译时间。
- 如果您需要SASS版本,请查看
bootstrap.scss
文件(无论是在您的bower_components/bootstrap-sass-official
文件夹中还是手动下载的位置)。也许有一些组件是您不需要的,所以您可以跳过一些文件。在您的主SCSS文件中,您将像这样包含bootstrap:@import "bootstrap-sass-official/vendor/assets/stylesheets/bootstrap.scss";
。查看此文件,并将仅需要的内容复制到您的主SCSS文件中(并确保更改路径)。 - 确保您正确使用
@import
语句。默认情况下,所有没有文件名前缀_
的文件都会被Grunt编译和包含。通常,您会为整个应用程序使用一个文件,例如styles.scss
,或者如果您想将其分开,则使用几个文件,例如page1.scss、page2.scss...
。如果您包含其他文件,例如@import 'colors.scss';
,请确保文件名为_colors.scss
。否则,colors.scss
也会被Grunt编译,然后由于@import
语句再次编译。这会减慢您的编译过程。
但是,这些只是解决方法,并不能加速编译本身。因此,我们仍在寻找解决方案。