gulpfile.js

/* global require */
var gulp = require('gulp');
// Requires the gulp-sass plugin
var sass = require('gulp-sass');
var uglify = require('gulp-uglify');
var autoprefixer = require('gulp-autoprefixer');
var pump = require('pump');
var runSequence = require('run-sequence');
var concat = require("gulp-concat");
var sourcemaps = require("gulp-sourcemaps");
var browserSync = require('browser-sync').create();


gulp.task('vendorJS', function() {
    return gulp.src([
            "js/vendor/modernizr.js",
            "js/vendor/jquery-1.11.1.min.js",
            "js/vendor/jquery-ui.js",
            "js/vendor/bootstrap.js",
            "js/vendor/d3.min.js",
            "js/vendor/colorbrewer.js"
        ])
        .pipe(sourcemaps.init())
        .pipe(concat('vendor.js'))
        .pipe(uglify())
        .pipe(sourcemaps.write('./'))
        .pipe(gulp.dest('js/dist'));
});

gulp.task('javascript', function() {
    return gulp.src([
            "js/queue.js",
            "js/custom.js",
            "js/maps_binary5yr.js",
            "js/maps-substance.js",
            "js/lines-death.js",
            "js/lines-fent.js",
            "js/lines-bsas.js",
            "js/blocks-bar.js",
            "js/blocks-gender.js",
            "js/bars-age.js",
            "js/bars-race.js",
	    "js/video.js"

        ])
        .pipe(sourcemaps.init())
        .pipe(concat('main.js'))
        .pipe(gulp.dest('js/dist'))
        .pipe(uglify({
            compress: {
                drop_debugger: false,
                drop_console: false
            },
        }))
        .pipe(sourcemaps.write('./'))
        .pipe(gulp.dest('js/dist'));

});




gulp.task('js-watch', ['javascript'], function(done) {
    browserSync.reload();
    done();
});



// Static Server + watching scss/html files
gulp.task('serve', ['sass', 'vendorJS', 'javascript'], function() {

    browserSync.init({
        server: "."
    });

    gulp.watch("css/scss/*.scss", ['sass']);
    gulp.watch("js/**/*.js", ['js-watch']);
    gulp.watch("index.html").on('change', browserSync.reload);
});

// Compile sass into CSS & auto-inject into browsers
gulp.task('sass', function() {
    return gulp.src("css/scss/main.scss")
        .pipe(sass())
        .pipe(autoprefixer())
        .pipe(gulp.dest("css"))
        .pipe(browserSync.stream());
});

gulp.task('default', ['serve']);