Documentation Request Checklist

• I have read and agree to Mocha's Code of Conduct and Contributing Guidelines
• I have searched for related issues and issues with the faq label, but none matched my issue.
• I want to provide a PR to resolve this

Overview

Because we are a test framework, it's hard to know whether running npx mocha is running some deployed version of Mocha or a local build of Mocha. We should have a style guide for how to repro issues while staying within the repo so that folks can consistently reproduce issues.

Additional Info

No response