no writecb in Transform class

I have an issue with compiling slim.

My code looks like this:

``` javascript
var gulp = require('gulp');
var plugins = require('gulp-load-plugins')({scope: ['devDependencies']});

gulp.task('html', function () {
return gulp.src('slim/**/*.slim')
.pipe(plugins.slim())
.pipe(gulp.dest('dist/views'));
});
```

Error goes here:

``` bash
[19:07:24] Starting 'html'...
events.js:141
throw er; // Unhandled 'error' event
^

Error: no writecb in Transform class
at afterTransform (D:\Develop\bootstrap-wdk\node_modules\gulp-slim\node_modules\through2\node_modules\readable-stream\lib\_stream_transform.js:95:33)
at TransformState.afterTransform (D:\Develop\bootstrap-wdk\node_modules\gulp-slim\node_modules\through2\node_modules\readable-stream\lib\_stream_transform.js:79:12)
at Socket. (D:\Develop\bootstrap-wdk\node_modules\gulp-slim\index.js:124:18)
at emitNone (events.js:72:20)
at Socket.emit (events.js:166:7)
at endReadableNT (_stream_readable.js:893:12)
at doNTCallback2 (node.js:429:9)
at process._tickCallback (node.js:343:17)
```

I think this was resolved here, but I don't understand it.
https://github.com/sindresorhus/gulp-esnext/issues/8

Start by running the provided gulp task with the slim/**/*.slim input, then inspect gulp-slim/index.js around line 124 and the referenced through2 readable-stream Transform code. Done means the sample pipeline compiles Slim files and completes without the “no writecb in Transform class” error.

Written by the indexing model from the issue text.