Gulp: Gulp 4 Alpha 3 Error: using browserify leads to "already started" error

[Dan503]

I've been using Gulp 4 for a while now and loving it. Not long ago Gulp 4 Alpha 3 was released.

Since Alpha 3 was released, I haven't been able to compile any of my sites with it.

My sites essentially use the Gulp browserify+watchify recipe for handling JS and that seems to be where the code is breaking.

It started off with Error: Received a non-Vinyl object in dest() but that was just because I needed to update "vinyl-source-stream" to the latest version.

After updating "vinyl-source-stream" to v2.0.0 I ran into another error Error: already started. I haven't been able to figure that one out yet.

Here is the full call stack error:

`````````````
C:xxxxxxx\node_modulescloneable-readable\index.js:38
throw new Error('already started')
^

Error: already started
at Cloneable.clone (C:xxxxxxx\node_modulescloneable-readable\index.js:38:11)
at File.clone (C:xxxxxxx\node_modules\vinyl-source-stream\node_modules\vinyl\index.js:117:30)
at BufferList._callback (C:xxxxxxx\node_modules\vinyl-buffer\index.js:18:19)
at BufferList.end (C:xxxxxxx\node_modules\vinyl-buffer\node_modules\bl\bl.js:83:10)
at Cloneable.onend (C:xxxxxxx\node_modulesreadable-streamlib_stream_readable.js:570:10)
at Cloneable.g (events.js:292:16)
at emitNone (events.js:91:20)
at Cloneable.emit (events.js:185:7)
at endReadableNT (C:xxxxxxx\node_modulesreadable-streamlib_stream_readable.js:992:12)
at _combinedTickCallback (internal/process/next_tick.js:80:11)
`````````````

I'm not sure who is actually to blame for the error. It could be Gulp, browserify, or vinyl-source-stream. It's not watchify. I disbled watchify and the error still occurred.

Any help would be appreciated :)

[phated]

Hey @Dan503! You need to update vinyl-buffer to version 1.0.1 also - there was a bug in it that had gone unnoticed. You might have it locked in a package-lock.json file so it might have not installed, even though it used proper semver.

[Dan503]

Thanks! Updating vinyl-buffer worked :)