gulpfile.js

'use strcit';

var gulp = require('gulp'),
    ts = require('gulp-typescript'),
    sourcemaps = require('gulp-sourcemaps'),
    concat = require('gulp-concat'),

    browserSync = require('browser-sync'),
    reload = browserSync.reload,

    del = require('del'),
    assign = require('object-assign'),


    // Load configuration
    tsconfig = require('./tsconfig.json'),
    config = require('./gulpfile.config')();

/**
 * Clean up destination directory
 */
 gulp.task('clean', function (done) {
    del([config.path.dest], done);
});


/**
 * Reload browser (connected with browser sync)
 */
gulp.task('reload', reload );


/**
 * Copy vendors into destination
 */
gulp.task('vendor', function () {
    gulp.src(config.vendor)
        .pipe(gulp.dest(config.path.dest + '/vendor'));
});


/**
 * Main (index.html)
 */
 gulp.task('main', function () {
    gulp.src(config.main)
        .pipe(gulp.dest(config.path.dest));
});


/**
 * Transpile TypeScript
 */
gulp.task('tsc', ['clean'], function () {
    var tsResult;

    tsResult = gulp.src([
        config.path.src + '/**/*.ts',
        'typings/tsd.d.ts'
    ])
        .pipe(sourcemaps.init())
        .pipe(ts(tsconfig)));

    tsResult.js
        .pipe(sourcemaps.write('.'))
        .pipe(gulp.dest(config.path.dest));
});


/**
 * Start developing (server + livereload)
 */
 gulp.task('start', ['default'], function ( done ) {
    gulp.watch(config.path.src + '/**/*.ts', ['tsc', 'reload']);
    gulp.watch(config.main, ['main', 'reload']);

    browserSync({
        server: {
            baseDir: config.path.dest
        },
        open: true,
        notify: false
    });
});


/**
 * Default: Only builds everything once
 */
gulp.task('default', ['clean', 'tsc', 'main', 'vendor']);