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找到的解决方案请参见此帖子的底部
尝试使用带有NodeJS的构建脚本来构建LESS(更少的CSS)
我正在尝试使用节点脚本更少地构建一个css文件,我的文件结构无法更改,看起来像:
/public/css/app.css
/resources/assets/less/xenon.less
/quickSync/02_lessCompiler.js
较少文件的内容实际上包括与.less文件本身相同且在层次结构中更高级别的其他较少文件,例如:
//导入Bootstrap变量和Mixins
@import“ bs-less / variables.less”;
@import“ bs-less / mixins.less”;
// LessHat
@import“ other-less / lesshat.less”;
...等
从上面的链接,我尝试了以下操作:
var less = require('less');
var fs = require('fs');
var path = require('path');
var basePath = __dirname +'/ ..';
var lessPath = basePath +'/resources/assets/less/xenon.less',
outputPath = basePath +'/public/css/app.css';
fs.readFile(lessPath,function(error,data){
数据= data.toString();
console.log(错误);
console.log(data);
less.render(data,function(e,css){
console.log(e);
console.log(css);
fs.writeFile(outputPath,css,function(err){
if(err){
console.log(err);
}
console.log('done');
});
});
});
上述解决方案的控制台输出为:
空值
//导入Bootstrap变量和Mixins
@import“ bs-less / variables.less”;
@import“ bs-less / mixins.less”;
// LessHat
@import“ other-less / lesshat.less”;
// Xenon Basic UI
@import“ xenon-core.less”;
// 形式
@import“ xenon-forms.less”;
//氙气附加组件
@import“ xenon-components.less”;
//氙气皮
@import“ xenon-skins.less”;
{[错误:未找到'xenon-skins.less'。尝试过-氙气皮少[氙气皮少]
类型:“文件”,
文件名:“输入”,
索引:311,
行:18,
callLine:NaN,
callExtract:未定义,
列:0,
提取:['// Xenon Skins','@import“ xenon-skins.less”;',未定义],
消息:找不到“ \'xenon-skins.less \”。尝试过-少了氙气,少了氙气',
堆栈:未定义}
未定义
完成
但是,输出文件只是读取
未定义
未定义
然后,我找到了这些人的博客:http://onedayitwillmake.com/blog/2013/03/compiling-less-from-a-node-js-script/并尝试了以下操作:
var less = require('less');
var fs = require('fs');
var path = require('path');
var lessPath = basePath +'/resources/assets/less/xenon.less',
outputPath = basePath +'/public/css/app.css';
//确保目录存在
var sureDirectory =函数(文件路径){
var dir = path.dirname(filepath);
var existSync = fs.existsSync || path.existsSync;
如果(!existsSync(dir)){
fs.mkdirSync(dir);
}
};
fs.readFile(lessPath,function(error,data){
var dataString = data.toString();
var options = {
路径:[basePath +'/ resources / assets / less'],// .less文件搜索路径
outputDir:basePath +'/ public / css',//输出目录,注意'/'
优化:1,//优化级别,越高越好,但波动性更大-1是一个好的值
filename:“ xenon.less”,//根.less文件
compress:false,//压缩?
yuicompress:false //使用YUI压缩器?
};
console.log(options);
options.outputDir = path.resolve(process.cwd(),options.outputDir)+“ /”;
sureDirectory(options.outputDir);
var parser = new less.Parser(options);
console.log('parsing');
parser.parse(dataString,function(error,cssTree){
如果(错误){
console.log('少编译错误:');
console.log(错误);
返回false;
}
//从cssTree创建CSS
var cssString = cssTree.toCSS({
压缩:options.compress,
yuicompress:options.yuicompress
});
fs.writeFile(outputPath,cssString,function(err){
logTime('Compiled less:'+ outputPath);
//运行mai传递的回调函数
打回来();
});
});
});
但是,此输出是错误的:
D:\ myproject \ node_modules \ less \ lib \ less \ parser \ parser.js:117
imports.contents [fileInfo.filename] = str;
^
TypeError:无法读取未定义的属性“内容”
在Object.Parser.parse(D:\ myproject \ node_modules \ less \ lib \ less \ parser \ parser.js:117:20)
在D:\ myproject \ quickSync \ 02_lessCompiler.js:51:16
在FSReqWrap.readFileAfterClose [完成时](fs.js:380:3)
这让我发疯,随便你走吧:
require('node-sass')。render({
文件:scssPath,
outFile:outputPath,
outputStyle:'展开',
sourceComments:正确
},函数(错误,结果){
//将结果写入磁盘。
});
用少节点编译器构建CSS的最简单方法是什么?
解:
fs.readFile(lessPath,function(error,data){
数据= data.toString();
less.render(data,{
路径:[basePath +'/ resources / assets / less /']
},function(e,css){
fs.writeFile(outputPath,css.css,function(err){
if(err){
console.log(err);
}
console.log('done');
});
});
}); 
第一个在这里工作,也许你应该
console.log(错误)
在readFile回调中,最有可能您的路径错误并且无法打开文件。
|
你的答案
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