gulp用法快速記憶

var gutil = require('gulp-util');
gulp.task('default',function(){
 gutil.log('message')
 gutil.log(gutil.colors.red('error'))
 gutil.log(gutil.colors.green('message')+'some')
})

//引入模塊:var watchPath = require('gulp-watch-path');//設(shè)置一個(gè)監(jiān)聽js文件的人物watchjsgulp.task('watchjs',function(){
 gulp.watch('src/js/**/*.js',function(event){
 var paths = watchPath('event','src/','dist/')//監(jiān)聽所有的js文件，有一個(gè)文件發(fā)生改變，則返回一個(gè)對(duì)象，該對(duì)象包含被修改js文件的相關(guān)屬性。
 /*
 paths對(duì)象的結(jié)構(gòu)如下:{srcPath:'src/js/log.js',
 distPath:'dist/js/log.js',
 distDir:'dist/js/',
 srcFilename:'log.js',
 distFilename:'log.js'}
 */ 
 gulp.src(paths.srcPath)
 .pipe( uglify())
 .pipe(gulp.dest(paths.distDir))


})


})

var handleError = function (err) {
var colors = gutil.colors;
console.log('\n')
gutil.log(colors.red('Error!'))
gutil.log('fileName: ' + colors.red(err.fileName))
gutil.log('lineNumber: ' + colors.red(err.lineNumber))
gutil.log('message: ' + err.message)
gutil.log('plugin: ' + colors.yellow(err.plugin))
}
var combiner = require('stream-combiner2')
gulp.task('watchjs', function () {
gulp.watch('src/js/**/*.js', function (event) {
var paths = watchPath(event, 'src/', 'dist/')

var combined = combiner.obj([
gulp.src(paths.srcPath),
uglify(),
gulp.dest(paths.distDir)
])
combined.on('error', handleError)
})
})

var sourcemaps = require('gulp-sourcemaps')
// ...
var combined = combiner.obj([
gulp.src(paths.srcPath),
sourcemaps.init(),
uglify(),
sourcemaps.write('./'),
gulp.dest(paths.distDir)
])
// ...

gulp.task('watchcss', function () {
gulp.watch('src/css/**/*.css', function (event) {
var paths = watchPath(event, 'src/', 'dist/')//用于檢測(cè)被修改的文件，返回一個(gè)對(duì)像，該對(duì)象包含一些關(guān)于被修改文件的屬性。
gulp.src(paths.srcPath)//獲取文件地址
.pipe(sourcemaps.init())//初始化對(duì)象，便于后面生成該文件的.map文件
.pipe(autoprefixer({
browsers: 'last 2 versions'
}))//添加前綴
.pipe(minifycss())//執(zhí)行壓縮功能
.pipe(sourcemaps.write('./'))
.pipe(gulp.dest(paths.distDir))//