Cleans up after gulp-sourcemaps have done a sourcemaps.write() allowing you to combine streams that generate both dev assets with sourcemaps and minified production assets.
npm install gulp-purge-sourcemaps``
npm install --save-dev gulp-purge-sourcemaps
`js
var gulp = require('gulp');
var sass = require('gulp-sass');
var rename = require('gulp-rename');
var minifyCSS = require('gulp-minify-css');
var sourcemaps = require('gulp-sourcemaps');
var purgeSourcemaps = require('gulp-purge-sourcemaps');
gulp.task('default', function () {
gulp.src('app.scss')
.pipe(sourcemaps.init())
.pipe(sass())
.pipe(sourcemaps.write())
.pipe(gulp.dest('dist'))
.pipe(purgeSourcemaps(/ sourcemaps.write() has been called, minifyCSS should not be fooled into thinking it's not generated yet /))
.pipe(minifyCSS({keepSpecialComments:0, processImport: false}))
.pipe(rename({suffix: '.min'}))
.pipe(gulp.dest('dist'));
});
``
MIT