Gulp tasks do not declare completion

[bignose-debian]

Gulp as of version 4 runs all tasks asynchronously. It passes to each task a callback function; if that function is not called, the task is assumed to fail.

The current gulpfile.js defines tasks that will fail in current versions of Gulp:

[22:17:41] The following tasks did not complete: coffee
[22:17:41] Did you forget to signal async completion?

[bignose-debian]

The Gulp documentation for asynchronous task completion specifies that synchronous task functions are no longer supported:

Synchronous tasks are no longer supported. They often led to subtle mistakes that were hard to debug, like forgetting to return your streams from a task.

When you see the "Did you forget to signal async completion?" warning, none of the techniques mentioned above were used. You'll need to use the error-first callback or return a stream, promise, event emitter, child process, or observable to resolve the issue.

[bignose-debian]

This is addressed in the branch ‘wip/issue/593/gulp-async-task-signal-completion’ in my personal fork repository. The branch merges cleanly to current ‘master’ branch.