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gulp的 同步异步的批量执行

const {src, dest,watch,series,parallel} = require("gulp")function fn1(done){    console.log("A")    done()}function fn2(done){    console.log("B");    done()}function fn3(done){    console.log("C")    done()}exports.syncAll = series(fn1,fn2,fn3)  		/*同步*/exports.asyncAll = parallel(fn1,fn2,fn3)    /*异步*/

文件的转存

**src（）根据指定路径读取文件，得到指定文件的流对象

function copFn(done){    src(["development/index.html"]).pipe(dest("dist"))    done()}function watchFn(done){    watch(["development/index.html"],copFn);    done()}exports.watch = watchFn;