If you installed Socket.IO via NPM, the map file is already on your computer!
: This is the client-side library for Socket.IO , often "minified" (compressed) to reduce file size for faster loading. Minification removes whitespace and renames variables to single letters, making the code unreadable for humans. socket.io.js.map download
Copy socket.io.js.map from there into your public or static assets folder. How to Fix the 404 Error If you installed Socket
When you have the map file, your browser can show you exactly where an error occurred in the original source, rather than pointing to a cryptic line in a 50,000-character single-line minified file. Why is my browser trying to download it? Copy socket
The easiest way to get the correct version of the map file is to match it to the version of Socket.IO you are currently using. 1. Download from CDN (Recommended)