59 lines
2.2 KiB
Markdown
59 lines
2.2 KiB
Markdown
# [gulp](https://github.com/wearefractal/gulp)-clone [](https://travis-ci.org/mariocasciaro/gulp-clone) [](http://badge.fury.io/js/gulp-clone) [](https://gemnasium.com/mariocasciaro/gulp-clone)
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> Duplicate files in memory.
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## Install
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Install with [npm](https://npmjs.org/package/gulp-clone).
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```
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npm install --save-dev gulp-clone
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```
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## Changelog
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* 2.0.0: **Possible Breaking change** - The dependency from gutil has been dropped, this has been reported to cause a breaking change in some circumstances. Please continue to use the 1.0 branch if that would cause problems in your setup.
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* 1.0.0: **Breaking change** - There is a new operating mode, as explained in the 1st example. The old
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operating mode is still available under the `clone.sink()` property.
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## Example
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gulp-clone is useful in all those situations where you perform a destructive operation on your files (as for example concat) and you want to keep your original files for further processing or saving.
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```js
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var gulp = require('gulp');
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var concat = require('gulp-concat');
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var clone = require('gulp-clone');
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var es = require('event-stream');
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gulp.task('default', function () {
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var scripts = gulp.src('assets/**/*.js');
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var bundle = scripts.pipe(clone())
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.pipe(concat('bundle.js'));
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// Merge the streams together, then write them to the out folder
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return es.merge(scripts, bundle).pipe(gulp.dest('out'));
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});
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```
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##Example - Bypass mode
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```js
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var gulp = require('gulp');
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var concat = require('gulp-concat');
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var clone = require('gulp-clone');
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var cloneSink = clone.sink();
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gulp.task('default', function () {
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gulp.src('assets/**/*.js')
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.pipe(cloneSink) //<- clone objects streaming through this point
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.pipe(concat("bundle.js"))
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.pipe(cloneSink.tap()) //<- output cloned objects + bundle.js
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.pipe(gulp.dest('out/')); //<- saves bundle.js + original files in one pass
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});
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```
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## License
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[MIT](http://en.wikipedia.org/wiki/MIT_License) @ Mario Casciaro
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