var gulp = require('gulp');

var browserify = require('browserify');

var source = require('vinyl-source-stream');

var tsify = require('tsify');

var sourcemaps = require('gulp-sourcemaps');

var buffer = require('vinyl-buffer');

var paths = {

pages: ['src/*.html']

};

gulp.task('copyHtml', function () {

return gulp.src(paths.pages)

.pipe(gulp.dest('dist'));

});

gulp.task('default', gulp.series('copyHtml', function () {

return browserify({

basedir: '.',

debug: true,

entries: ['src/main.ts'],

cache: {},

packageCache: {}

})

.plugin(tsify)

.transform('babelify', {

presets: ['es2015'],

extensions: ['.ts']

})

.bundle()

.pipe(source('bundle.js'))

.pipe(buffer())

.pipe(sourcemaps.init({loadMaps: true}))

.pipe(sourcemaps.write('./'))

.pipe(gulp.dest('dist'));

}));