Undertaker custom registry supporting forward referenced tasks.
The focus of gulp 4.0 is to make the 90% use case extremely easy, but we don't want to completely unsupport the 10% use cases. We have noticed patterns people use and things they want to do (and have worked around), like serial execution. However, I believe forward referenced tasks (as defined in https://github.com/gulpjs/gulp/issues/802) are an edge case that is better handled with other patterns (coming soon: links to better patterns). If you must use forward referenced tasks, you can set this as a custom registry before registering any tasks.
var gulp = ;var FwdRef = ;gulp; // or gulp.registry(new FwdRef());gulp;gulp;
Constructor for the registry. Pass an instance of this registry to