配置gulp-notify來(lái)不停止編譯less顯示錯(cuò)誤信息，但在編譯less時(shí)報(bào)了 TypeError: dest.on is not a function的錯(cuò)gulpfile.js代碼如下var gulp = require('gulp');var less = require('gulp-less');var through = require('gulp-through');var notify = require('gulp-notify');//LESS編譯任務(wù)gulp.task('less', function () {    return gulp.src('less/*.less')        .pipe(less())        .pipe(through(function () {            this.emit("error", new Error("Something happend: Error message!"))        }))        .on("error", notify.onError("Error: <%= error.message %>"))        .pipe(gulp.dest('css'));});gulp.task('default', function () {    gulp.watch('less/*.less', ['less']);});