#example errors
Error: src/sass/utilities/mixins/_vendor-prefixes.scss
Error: Invalid CSS after "::-webkit-": expected "{", was "&-placeholder"
"&-placeholder" may only be used at the beginning of a compound selector.
on line 116 of src/sass/utilities/mixins/_vendor-prefixes.scss
Error: src/sass/base/_base.scss
Error: "ul" failed to @extend "%reset-list".
The selector "%reset-list" was not found.
Use "@extend %reset-list !optional" if the extend should be able to fail.
on line 142 of src/sass/base/_base.scss
events.js:160
throw er; // Unhandled 'error' event
^
Error: src/sass/utilities/_placeholders.scss
Error: You may not @extend an outer selector from within @media.
You may only @extend selectors within the same directive.
From "@extend %clearfix" on line 38 of src/sass/modules/_calendar.scss
on line 9 of src/sass/utilities/_placeholders.scss
#manual install
npm install --save-dev gulp gulp-autoprefixer gulp-compressor gulp-concat gulp-cssnano gulp-csso gulp-imagemin gulp-jshint gulp-livereload gulp-plumber gulp-rename gulp-sass gulp-sourcemaps gulp-sprite-generator gulp-spritesmith gulp-uglify gulp.spritesmith jshint merge-stream vinyl-buffer imagemin-pngquant