build script & framework wrapper for react, angular and vue

build.js

@@ -0,0 +1,75 @@
+const sh = require('shelljs');
+const fs = require('fs');
+const chalk = require('chalk');
+const gulp = require('gulp');
+const UglifyJS = require('uglify-js');
+const csso = require('csso');
+
+const uglifyFiles = [
+    {
+        src: './js/OverlayScrollbars.js',
+        dest: './js/OverlayScrollbars.min.js',
+    },
+    {
+        src: './js/jquery.overlayScrollbars.js',
+        dest: './js/jquery.overlayScrollbars.min.js',
+    }
+];
+const cssoFiles = [
+    {
+        src: './css/OverlayScrollbars.css',
+        dest: './css/OverlayScrollbars.min.css',
+    }
+];
+
+sh.echo(chalk.cyanBright('Start building:'));
+
+gulp.task('uglify', function (done) {
+    uglifyFiles.forEach((file) => {
+        if (sh.test('-f', file.src)) {
+            sh.echo(chalk.yellowBright('uglify: ') + chalk.greenBright(`${file.src} → ${file.dest}`));
+            sh.ShellString(UglifyJS.minify(fs.readFileSync(file.src, 'utf-8'), {
+                ie8: true,
+                compress: {
+                    ie8: true
+                },
+                mangle: {
+                    ie8: true,
+                    properties: {
+                        'regex': /^_/
+                    }
+                },
+                output: {
+                    ie8: true,
+                    beautify: false,
+                    comments: /@license|@preserve|^!/,
+                    indent_level: 4,
+                    indent_start: 0,
+                    quote_style: 0
+                }
+            }).code).to(file.dest);
+        }
+        else {
+            sh.echo(chalk.redBright(`${file.src} not found!`));
+        }
+    });
+    done();
+});
+
+gulp.task('csso', function (done) {
+    cssoFiles.forEach((file) => {
+        if (sh.test('-f', file.src)) {
+            sh.echo(chalk.yellowBright('csso: ') + chalk.greenBright(`${file.src} → ${file.dest}`));
+            sh.ShellString(csso.minify(fs.readFileSync(file.src, 'utf-8'), {
+                restructure: false,
+                comments: 'first-exclamation'
+            }).css).to(file.dest);
+        }
+        else {
+            sh.echo(chalk.redBright(`${file.src} not found!`));
+        }
+    });
+    done();
+});
+
+gulp.parallel('uglify', 'csso')();