iwmlib/gulpfile.js

const {src, dest, parallel} = require('gulp');
const uglify = require('gulp-uglify');
const rename = require('gulp-rename');
const concat = require('gulp-concat');
const replace = require('gulp-replace');

function vendors() {
    return src([
        './node_modules/optimal-select/dist/optimal-select.js',
        './node_modules/hammerjs/hammer.js',
        './node_modules/propagating-hammerjs/propagating.js',
        './node_modules/pixi.js/dist/pixi.js',
        './node_modules/pixi-compressed-textures/lib/crn_decomp.js',
        './node_modules/pixi-compressed-textures/bin/pixi-compressed-textures.js',
        './node_modules/pixi-filters/dist/pixi-filters.js',
        './node_modules/pixi-particles/dist/pixi-particles.js',
        './node_modules/pixi-projection/dist/pixi-projection.js',
        './node_modules/gsap/src/uncompressed/TweenMax.js',
        './node_modules/gsap/src/uncompressed/TimelineMax.js',
        './lib/3rdparty/pixi-ease.js',
        './lib/3rdparty/pixi-viewport.js',
        './lib/3rdparty/convertPointFromPageToNode.js'
    ], {sourcemaps: false})
        .pipe(concat('iwmlib.3rdparty.js'))
        .pipe(replace(/^\/\/# sourceMappingURL=.*$/gmi, ''))
        .pipe(dest('dist', {sourcemaps: false}))
        .pipe(rename({extname: '.min.js'}))
        .pipe(uglify())
        .pipe(dest('dist', {sourcemaps: false}))
}

function preload() {
    return src([
        './node_modules/gsap/src/uncompressed/TweenMax.js',
        './lib/3rdparty/convertPointFromPageToNode.js',
    ], {sourcemaps: false})
        .pipe(concat('iwmlib.3rdparty.preload.js'))
        .pipe(replace(/^\/\/# sourceMappingURL=.*$/gmi, ''))
        .pipe(dest('dist', {sourcemaps: false}))
        .pipe(rename({extname: '.min.js'}))
        .pipe(uglify())
        .pipe(dest('dist', {sourcemaps: false}))
}

exports.default = parallel(vendors, preload);