Today in the Laminas Slack, somebody asked if there was an equivalent to Laravel's Tinker REPL. The short answer is "no", but I had a suggestion for them.
I fielded a question in the Laminas Slack yesterday that I realized should likely be a blog post. The question was:
Is there a way to register development-mode-only modules in Mezzio?
There's actually multiple ways to do it, though one that is probably more preferable to others.