Turned Facebook Messenger into a JavaScript REPL

In plain words

Bot-wat is a Facebook Messenger bot that functions as a JavaScript REPL (read-eval-print loop), allowing users to execute and test JavaScript code directly within Messenger. Inspired by Gary Bernhardt's "Wat" talk about JavaScript's quirks, it lets developers experiment with JavaScript snippets in a conversational format. The bot is designed for developers and JavaScript enthusiasts who want to quickly test code or explore the language's behavior without leaving their messaging platform.

written from the facts on this page · September 2026

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