Gulp Monitor file changes and copy to the specified directory

Directory modification, creation, and deletion are not supported for the time being.

varGulp = require (' Gulp '));varFS = require (' FS ');varPath = require (' path ');varless = require (' gulp-less ');varSass = require (' Gulp-sass '));varMinifycss = require (' gulp-minify-css '));varConcat = require (' Gulp-concat '));varUglify = require (' gulp-uglify '));varRename = require (' Gulp-rename '));vardel = require (' del ');varTINYLR = require (' TINY-LR '));varServer =TINYLR ();varPort = 1234;//Browser-syncvarBrowsersync = require (' Browser-sync '));//Create a multi -level catalogfunctionmkdirs (dirname, mode, callback) {fs.exists (dirname,function(exists) {if(exists) {callback (); }Else{            //Console.log (Path.dirname (dirname));Mkdirs (Path.dirname (dirname), mode,function() {fs.mkdir (dirname, mode, callback);        }); }    });}//Copy FilesfunctionCopyFile (OldPath, NewPath) {Console.log (' Copy ' +oldpath+ ' +NewPath); varStat =Fs.lstatsync (OldPath); if(Stat.isdirectory ()) {Console.log (OldPath+ ' is directory '); return false; }        varReadstream =Fs.createreadstream (OldPath); varWritestream =Fs.createwritestream (NewPath);    Readstream.pipe (Writestream); Readstream.on (' End ',function() {Console.log (' Copy End ');    }); Readstream.on (' Error ',function() {Console.log (' Copy error '); });} Gulp.task (' Default ',function() {}); Gulp.task (' CSS ',function() {    returnGULP.SRC (' Src/*.css ')//Compressed Files. Pipe (Gulp.dest (' target/css '))//output Folder. Pipe (Minifycss ());//Perform compression});//Compiling sassGulp.task (' sass ',function() {GULP.SRC ('./src/css/*.scss '). Pipe (Sass ()). Pipe (rename ({suffix:'. Min '}). Pipe (Minifycss ()). Pipe (Gulp.dest (' Target/css '));}); Gulp.task (' JS ',function() {    returnGulp.src ('./src/js/*.js ')). Pipe (Gulp.dest (' Target/js '))//output main.js to folder. Pipe (rename ({suffix: '. Min '}))//Rename the file name after compression. Pipe (Uglify ())//Compression. Pipe (Gulp.dest (' Target/js '));//Output}); Gulp.task (' HTML ',function() {    returnGulp.src ('./src/*.php ')). Pipe (Gulp.dest (' target/'));//Output});//Monitor task run Statement Gulp WatchGulp.task (' Watch ',function() {Server.listen (port,function(err) {if(err) {returnConsole.log (ERR); }                //Copy the modified fileGulp.watch (' src/**/** ',function(e) {console.log (e); varOldPath =E.path; varNewPath = Oldpath.replace (' \\src\\ ', ' \\target\\ '); varNewdirpathtemp = newpath.split ("\ \"); varCurrentpath = Fs.realpathsync ('. ')); varNewdirpath = [];  for(vari = 0; i < newdirpathtemp.length-1; i++) {Newdirpath[i]=Newdirpathtemp[i]; } Newdirpath= Newdirpath.join ("\ \"); Newdirpath= Newdirpath.replace (Currentpath, "); Newdirpath= Newdirpath.replace (/\\/g, "/"); Newdirpath= Newdirpath.replace ("/", "./"); //console.log (' current path ' +newdirpath);                        //when modified or added            if(' added ' = = E.type | | ' changed ' = = E.type | | ' Renamed ' = =e.type) {//determines whether the directory exists, does not exist, and createsFs.exists (Newdirpath,function(exists) {if(exists) {//Console.log ("folder exists");CopyFile (OldPath, NewPath); } Else {                        //Console.log ("folder does not exist, create directory");mkdirs (Newdirpath); //delay, wait for directory creation to completeSetTimeout (function() {CopyFile (OldPath, NewPath); }, 200);            }                }); } Else if(' deleted ' = = E.type) {//DeleteFs.unlink (NewPath,function(Err) {Console.log (' Delete ' +newpath+err);            });        }        }); //Monitor SassGulp.watch (' Src/css/*.scss ',function() {Gulp.run (' Sass ');        }); //Monitor JSGulp.watch ('./src/js/*.js ',function() {Gulp.run (' JS ');                }); //Listening for HTMLGulp.watch ('./src/*.php ',function() {Gulp.run (' HTML ');            });        }); //sync to browser in real timeBrowsersync.init ([' target/css/* ', ' target/js/* ', ' target/*.html ', ' target/*.php '], {        /*Static Service server: {baseDir: "Target"}*/                //Proxy ModeProxy: "Dz.com"    }); });

Gulp Monitor file changes and copy to the specified directory