让我们考虑下场景:当使用rem/vw开发移动端的时候，你定义了一个px转rem的函数,或者是网站配色的全局变量等，然后到工程里为每个vue文件或者组件@import ‘publicfilename.scss',那得重复做这样的工作很多很多...次，万一这些公用文件目录路径变怎么办呢，哭都来不及，想想都觉得恐怖呀！
return path.posix.join(assetsSubDirectory,_path)
}
exports.cssLoaders = function (options) {
options = options || {}
const cssLoader = {
loader: 'css-loader',options: {
sourceMap: options.sourceMap
}
}
// generate loader string to be used with extract text plugin
function generateLoaders (loader,loaderOptions) {
const loaders = options.usePostCSS ? [cssLoader,postcssLoader] : [cssLoader]
if (loader) {
loaders.push({
loader: loader + '-loader',options: Object.assign({},loaderOptions,{
sourceMap: options.sourceMap
})
})
}
// Extract CSS when that option is specified
// (which is the case during production build)
if (options.extract) {
return ExtractTextPlugin.extract({
use: loaders,fallback: 'vue-style-loader'
})
} else {
return ['vue-style-loader'].concat(loaders)
}
}
// https://vue-loader.vuejs.org/en/configurations/extract-css.html
return {
css: generateLoaders(),postcss: generateLoaders(),less: generateLoaders('less'),sass: generateLoaders('sass',{ indentedSyntax: true }),scss: generateLoaders('sass'),stylus: generateLoaders('stylus'),styl: generateLoaders('stylus')
}
}
// Generate loaders for standalone style files (outside of .vue)
exports.styleLoaders = function (options) {
const output = []
const loaders = exports.cssLoaders(options)
for (const extension in loaders) {
const loader = loaders[extension]
output.push({
test: new RegExp('.' + extension + '$'),use: loader
})
}
return output
}
exports.createNotifierCallback = () => {
const notifier = require('node-notifier')
return (severity,errors) => {
if (severity !== 'error') return
const error = errors[0]
const filename = error.file && error.file.split('!').pop()
notifier.notify({
title: packageConfig.name,message: severity + ': ' + error.name,subtitle: filename || '',icon: path.join(__dirname,'logo.png')
})
}
}
/**
- 增加 hljs 的 classname
*/
exports.wrapCustomClass = function (render) {
return function (...args) {
return render(...args)
.replace('<code class="','<code class="hljs ')
.replace('','<code class="hljs">')
}
}
/**
- Format HTML string
*/
exports.convertHtml = function (str) {
return str.replace(/(&#x)(w{4});/gi,$0 => String.fromCharCode(parseInt(encodeURIComponent($0).replace(/(%26%23x)(w{4})(%3B)/g,'$2'),16)))
}
sass Less 源文件
@param name classFile
@returns {string}
*/
function resolveResouce(name) {
return path.resolve(__dirname,'../static/' + name);
}
//导入全局sass mixin function等
function generateSassResourceLoader(){
var loaders = [
cssLoader,//'postcss-loader','sass-loader',{
loader:'sass-resources-loader',options: {
//需要一个全局路径
resources: [resolveResouce('index.scss')]
}
}
]
if(options.extract){
return ExtractTextPlugin.extract({
use:loaders,fallback: 'vue-style-loader'
})
}else{
return ['vue-style-loader'].concat(loaders)
}
}
