我是Grunt的新手,到目前为止,我非常喜欢它。
我希望Grunt在运行grunt watch
在我的Grunfile.coffee中,我目前有(相关部分) 注意:assets / javascript / app.coffee和assets / javascript / app.js是目录
coffee:
default:
expand: true
cwd: "assets/javascript/app.coffee"
src: ["*.coffee"]
dest: "assets/javascript/app.js"
ext: ".js"
uglify:
dev:
options:
beautify: true
compress: false
mangle: false
preserveComments: 'all'
files:
"js/app.js": "assets/javascript/app.js/*.js"
"js/libs.js": "assets/javascript/libs/*.js"
watch:
coffeescript:
files: 'assets/javascript/**/*.coffee'
tasks: ["coffee"]
javascript:
files: "assets/**/*.js"
tasks: ["uglify:dev"]
livereload:
files: ["Gruntfile.coffee", "js/*.js", "*.php", "css/*.css", "images/**/*.{png,jpg,jpeg,gif,webp,svg}", "js/*.js", ]
options:
livereload: true
可能有一个较短的方法,但我首先将app.coffee编译为app.js,这样在我分发我的作品后,不熟悉Coffeescript的人可以以合理的方式浏览代码。
所有这一切的问题在于,现在我保存了一个Coffeescript文件,我得到了太多步骤(我认为):
>> File "assets/javascript/app.coffee/browse.coffee" changed.
Running "coffee:default" (coffee) task
File assets/javascript/app.js/browse.js created.
File assets/javascript/app.js/filters.js created.
Done, without errors.
Completed in 0.837s at Tue May 28 2013 12:30:18 GMT+0300 (EEST) - Waiting...
OK
>> File "assets/javascript/app.js/browse.js" changed.
>> File "assets/javascript/app.js/filters.js" changed.
Running "uglify:dev" (uglify) task
File "js/app.js" created.
File "js/libs.js" created.
Done, without errors.
Completed in 0.831s at Tue May 28 2013 12:30:19 GMT+0300 (EEST) - Waiting...
OK
>> File "js/app.js" changed.
>> File "js/libs.js" changed.
Completed in 0.000s at Tue May 28 2013 12:30:19 GMT+0300 (EEST) - Waiting...
目前我只是设置我的项目,但我会有更多的Coffeescript文件,我不希望Coffeescript在每次更改文件时重新编译所有文件。
此外,libs.js完全不参与所有这些,但我想它仍然是编译的,因为它也匹配“assets / * / .js”模式。
有没有办法让Grunt只编译已更改的文件?
答案 0 :(得分:73)
我终于找到了一个真正的解决方案!而且它也非常简单!
npm install grunt-newer --save-dev
然后在你的Gruntfile中(在grunt中加载任务后):
watch:
coffeescript:
files: 'assets/javascript/**/*.coffee'
tasks: ["newer:coffee"]
答案 1 :(得分:2)
如果将所有.coffee源连接到一个.js文件中,那么每次任何源更改时都必须重新编译它。将其拆分为几个.js文件并进行发布任务,您只能连接这些.js文件。这样你仍然只需要包含一个.js文件。
请参阅Using gruntjs, how do watch for changes in .coffee files?
答案 2 :(得分:1)
grunt.event.on
事件检测到文件中的更改,并收到action
和filepath
参数。
这是一个基于我的gruntfiles之一的未经测试的示例。在这种情况下,我的所有源coffeescript文件都保存在名为sources的目录中,为了预览,它们被编译并保存到名为dev
的目录下的相同目录结构中。SOURCES_DIR = 'sources'
DEV_DIR = 'dev'
grunt.initConfig
watch :
all :
files : ["**/*.coffee"]
coffee :
dev :
files :
dest : "app.js"
grunt.loadNpmTasks 'grunt-contrib-watch'
grunt.loadNpmTasks 'grunt-contrib-coffee'
grunt.registerTask 'build', ['coffee:dev']
grunt.event.on('watch', (action,filepath) ->
# Determine the full directory of the changed file
wdi = filepath.lastIndexOf '/'
wd = filepath.substring 0,wdi
# remove `sources` prefix from that directory
fpath = wd.replace(SOURCES_DIR,'') + '/'
# determine the filename
fnamei = filepath.lastIndexOf '.'
fname = filepath.substring wdi+1,fnamei # NOTE: this breaks the case where in same dir
# concatenate fpath and fname with the dir to be compiled into
deststr = "#{DEV_DIR}#{fpath}#{fname}.coffee"
# set coffee.dev.files value in the coffee task to have am entry of form {"destination":"source"}
obj = {}
obj[deststr] = filepath
grunt.config "coffee.dev.files", obj
# fire the coffee task
grunt.task.run "coffee"
)
希望有所帮助。
编辑:可能不完全是您想要的 - 因为毫无疑问您需要访问中间变量,操作等等 - 但您可以使用grunt来运行shell coffee命令。 grunt-shell
npm任务执行此操作,例如
EDIT2:我遇到了grunt.watch.on
在OSX 10.8和MacVim 7.3上不能始终如一地处理grunt 0.4.1的问题。无论出于何种原因,它都不再看了。我已经恢复到只使用基本的grunt initConfig对象,但具有更多的粒度,因此它只监视和编译相对较小的文件组而不是整个批次。这大大减慢了构建时间,但它更加强大。你的里程可能非常。
答案 3 :(得分:0)
我也偶然发现了这一点,并没有发现任何适用于当前版本的工作版本(0.4.1)但是Jof Arnolds的回答显示了一个很好的方法。
这就是我提出的:
# only recompile changed files
grunt.event.on "watch", (action, filepath) ->
# note that we have to manually change the target file name to
# our desired format
targetName = filepath.replace(/\/(client|shared)/, "")
.replace(".coffee", ".js")
.replace("app/", "")
options =
src: filepath
dest: "public/javascripts/#{targetName}"
grunt.config ["coffee", "client"], options
我的咖啡部分看起来有点像这样:
coffee:
client:
options:
sourceMap: false
files: [
expand: true
cwd: "app"
src: ["*/client/**/*.coffee", "helpers/{client,shared}/*.coffee"]
dest: "public/javascripts"
rename: (folder, name) ->
name = name.replace(/\/(client|shared)/, "")
[folder, name].join path.sep
ext: ".js"
]