gulp-dedupe

> ### Forked Version using updated dependencies
> Original repo at https://github.com/hoho/gulp-dedupe

This plugin is checking for duplicate files (based on their name) in the stream and filter them or throw an error.


Install:

``sh
npm install gulp-dedupe --save-dev
`


Example:

`js
var dedupe = require('gulp-dedupe');

...
.pipe(dedupe()) // Remove duplicates from previous tasks (if any).
.pipe(concat('bundle.css')) // For example, we need to concat the result without duplicates.
.pipe(gulp.dest('./build'));
`

dedupe(options) optionally accepts options object. The following options are
available:

+ error to emit an error in case of duplicate (false by default).
+ same to emit an error in case duplicates have different contents (true by
default).
+ diff to supply duplicates with different contents error from previous option
with actual diff (false` by default).