add gulp for building client scripts and styles

gulpfile.js

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+'use strict';
+
+var autoprefixer = require('gulp-autoprefixer'),
+    path = require('path'),
+    minify = require('gulp-minify'),
+    cleanCss = require('gulp-clean-css'),
+    debug = require('gulp-debug'),
+    csso = require('gulp-csso'),
+    concatCss = require('gulp-concat-css'),
+    concatJs = require('gulp-concat'),
+    sourcemaps = require('gulp-sourcemaps'),
+    jshint = require('gulp-jshint'),
+    del = require('del'),
+    gulp = require('gulp'),
+    uglify = require('gulp-uglify');
+
+const AUTOPREFIXER_BROWSERS = [
+    'ie >= 10',
+    'ie_mob >= 10',
+    'ff >= 30',
+    'chrome >= 34',
+    'safari >= 7',
+    'opera >= 23',
+    'ios >= 7',
+    'android >= 4.4',
+    'bb >= 10'
+];
+var basePath = path.dirname(__filename);
+var staticPath = basePath + '/static/';
+
+gulp.task('clean', gulp.series(function () {
+    return del([
+        staticPath + 'css/build.css',
+        staticPath + 'js/build.js',
+        staticPath + 'js/build-min.js'
+    ]);
+}));
+
+gulp.task('minstyles', gulp.series(function () {
+    return del([staticPath + 'css/build.css'])
+}, function () {
+    return gulp.src(['static/css/**/*.css'], {base: basePath})
+        .pipe(autoprefixer({browsers: AUTOPREFIXER_BROWSERS}))
+        .pipe(concatCss('build.css'))
+        .pipe(sourcemaps.init())
+        .pipe(cleanCss())
+        .pipe(csso())
+        .pipe(sourcemaps.write())
+        .pipe(gulp.dest('static/css/', {base: basePath}));
+}));
+
+gulp.task('minscripts', gulp.series(gulp.series(function () {
+    return del([staticPath + 'js/build.js'])
+}, function () {
+    return gulp.src([
+        'node_modules/jquery/dist/jquery.js',
+        'node_modules/jquery-ui-dist/jquery-ui.js',
+        'node_modules/magnific-popup/dist/jquery.magnific-popup.js',
+        'node_modules/jquery-bar-rating/dist/jquery.barrating.min.js',
+        'node_modules/bootstrap/dist/js/bootstrap.js',
+        'node_modules/jquery-autocomplete/jquery.autocomplete.js',
+        'static/js/**/*.js'
+    ], {base: basePath})
+        .pipe(jshint())
+        .pipe(jshint.reporter('default'))
+        .pipe(uglify())
+        .pipe(sourcemaps.init())
+        .pipe(concatJs('build.js'))
+        .pipe(sourcemaps.write())
+        .pipe(minify())
+        .pipe(gulp.dest('static/js/', {base: basePath}));
+})));
+
+gulp.task('default', gulp.series('minstyles', 'minscripts'));

package.json

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+{
+  "name": "local-minifier",
+  "version": "0.1.0",
+  "description": "A local environment to minify CSS, JS",
+  "license": "Apache-2.0",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/amardeeprai/local-minifier"
+  },
+  "devDependencies": {
+    "del": "^2.0.2",
+    "gulp": "^4.0.0",
+    "gulp-autoprefixer": "latest",
+    "gulp-clean-css": "^3.10.0",
+    "gulp-csso": "^3.0.1",
+    "gulp-concat": "^2.6.1",
+    "gulp-concat-css": "^3.1.0",
+    "gulp-debug": "^4.0.0",
+    "gulp-jshint": "^2.1.0",
+    "gulp-minify": "^3.1.0",
+    "gulp-rename": "^1.4.0",
+    "gulp-sourcemaps": "^2.6.4",
+    "gulp-uglify": "^2.0.0",
+    "jshint": "^2.9.6",
+    "minimatch": "3.0.2",
+    "run-sequence": "^1.2.2"
+  },
+  "engines": {
+    "node": ">=0.12.0"
+  },
+  "dependencies": {
+    "bootstrap": "3.3.7",
+    "gulp-minify-css": "^1.2.4",
+    "jquery": "^3.3.1",
+    "jquery-autocomplete": "^1.2.8",
+    "jquery-bar-rating": "^1.2.2",
+    "jquery-ui-dist": "1.12.1",
+    "magnific-popup": "^1.1.0"
+  }
+}