删除LESS //编译注释

Question

是否可以配置LESS以在通过JS编译时删除"// comments"？

我想从输出的less文件中删除它们.

Answer 1

//根据文档规定,较少的单行注释应该是静默的:

单行注释在LESS中也有效,但它们是"静默的",它们不会出现在已编译的CSS输出中:

// Hi, I'm a silent comment, I won't show up in your CSS
.class { color: white }

请参阅LESS的网站:http://lesscss.org/#-comments

-xflag在命令行上工作以输出缩小的CSS(将删除CSS注释),但无论如何,双斜杠不应出现在css上.请参阅"命令行使用"主题中的http://lesscss.org/#usage.

Answer 2

关于没有CLI工具的JS使用,文档说:

您可以将一些选项传递给编译器:

不幸的是,这些选项并未在任何地方指定 你必须知道代码的位置,这里是:https://github.com/less/less.js/blob/0c2c1b2ba3036c62be5fc4e6232d3c0493559764/lib/less/env.js

各种选项(在撰写本文时,来自上面链接的blob):

var parseCopyProperties = [
    'paths',            // option - unmodified - paths to search for imports on
    'optimization',     // option - optimization level (for the chunker)
    'files',            // list of files that have been imported, used for import-once
    'contents',         // map - filename to contents of all the files
    'contentsIgnoredChars', // map - filename to lines at the begining of each file to ignore
    'relativeUrls',     // option - whether to adjust URL's to be relative
    'rootpath',         // option - rootpath to append to URL's
    'strictImports',    // option -
    'insecure',         // option - whether to allow imports from insecure ssl hosts
    'dumpLineNumbers',  // option - whether to dump line numbers
    'compress',         // option - whether to compress
    'processImports',   // option - whether to process imports. if false then imports will not be imported
    'syncImport',       // option - whether to import synchronously
    'javascriptEnabled',// option - whether JavaScript is enabled. if undefined, defaults to true
    'mime',             // browser only - mime type for sheet import
    'useFileCache',     // browser only - whether to use the per file session cache
    'currentFileInfo'   // information about the current file - for error reporting and importing and making urls relative etc.
];

和:

var evalCopyProperties = [
    'silent',         // whether to swallow errors and warnings
    'verbose',        // whether to log more activity
    'compress',       // whether to compress
    'yuicompress',    // whether to compress with the outside tool yui compressor
    'ieCompat',       // whether to enforce IE compatibility (IE8 data-uri)
    'strictMath',     // whether math has to be within parenthesis
    'strictUnits',    // whether units need to evaluate correctly
    'cleancss',       // whether to compress with clean-css
    'sourceMap',      // whether to output a source map
    'importMultiple', // whether we are currently importing multiple copies
    'urlArgs'         // whether to add args into url tokens
];

它们还通过各种使用LESS通过JS的Grunt和Gulp插件进行了记录.

所以,要回答你的问题,你不能在/**/不使用的情况下删除评论compress.所有其他事情也是如此.

Answer 3

2015年7月更新:在尝试-x其他答案建议的时候,我收到了这个警告:

compress选项已被弃用.我们建议您使用专用的css minifier,例如,请参阅less-plugin-clean-css.

您可以安装该插件与

npm install -g less-plugin-clean-css

然后运行lessc与--clean-css争论.