Replace Grunt tasks with Gulp

gulpfile.js

@@ -0,0 +1,97 @@
+/* ==========================================================================
+   MINIMAL MISTAKES JEKYLL THEME - Gulpfile
+   ========================================================================== */
+
+/**
+*
+* Packages used
+*
+**/
+var gulp         = require('gulp');
+var sass         = require('gulp-sass');
+var prefix       = require('gulp-autoprefixer');
+var plumber      = require('gulp-plumber');
+var uglify       = require('gulp-uglifyjs');
+var jshint       = require('gulp-jshint');
+var rename       = require("gulp-rename");
+var imagemin     = require("gulp-imagemin");
+var pngquant     = require('imagemin-pngquant');
+
+/**
+*
+* Styles
+* - Compile
+* - Compress/Minify
+* - Catch errors (gulp-plumber)
+* - Run through Autoprefixer
+*
+**/
+gulp.task('css', function() {
+  gulp.src('_assets/css/**/*.scss')
+  .pipe(sass({outputStyle: 'compressed'}))
+  .pipe(prefix('last 2 versions', '> 5%', 'ie 9'))
+  .pipe(plumber())
+  .pipe(gulp.dest('assets/css'));
+});
+
+/**
+*
+* Javascript
+* - Concatenate main script with plugins
+* - Uglify
+* - Rename
+*
+**/
+gulp.task('scripts', function() {
+  gulp.src(['_assets/js/*.js', '_assets/js/plugins/*.js'])
+    .pipe(uglify())
+    .pipe(rename({
+      basename: "main",
+      suffix: ".min",
+    }))
+    .pipe(gulp.dest('assets/js'))
+});
+
+/**
+*
+* Javascript
+* - Lint for errors
+*
+**/
+gulp.task('jslint', function() {
+  return gulp.src('_assets/js/_*.js')
+    .pipe(jshint())
+    .pipe(jshint.reporter('default'))
+    .pipe(jshint.reporter('fail'))
+});
+
+/**
+*
+* Images
+* - Optimize image assets
+*
+**/
+gulp.task('images', function () {
+  return gulp.src('images/*')
+  .pipe(imagemin({
+    progressive: true,
+    svgoPlugins: [{removeViewBox: false}],
+    use: [pngquant()]
+  }))
+  .pipe(gulp.dest('images'));
+});
+
+
+/**
+*
+* Default task
+* - Runs scss, scripts and image tasks
+* - Watches for scss, script, and image changes
+*
+**/
+gulp.task('default', ['css', 'jslint', 'scripts', 'images'], function () {
+  gulp.watch('_assets/**/*.scss', ['css']);
+  gulp.watch('_assets/js/_*.js', ['jslint']);
+  gulp.watch('_assets/js/**/*.js', ['scripts']);
+  gulp.watch('images/*', ['images']);
+});