Gulp go fmt

gulpfile.js

var gulp = require('gulp'),
    path = require('path'),
    tap  = require('gulp-tap'),
    exec = require('child_process').exec;

var serverPaths = {
    ALL_GO: ['./server/**/*.go'],
};
    
gulp.task('go-fmt', function() {
    gulp.src(serverPaths.ALL_GO)
        .pipe(tap(function(file, t) {
            console.log(file.path);
            exec('go fmt ' + file.path, function (err, stdout, stderr) {
                if (err) {
                    throw err
                }
            });
        }));
});