Better debugging for Cloudflare Workers, now with breakpoints

Cloudflare Workers provides various tools to help developers debug their applications from local environments to production. These include logs, console.log statements, DevTools for network requests and memory heap snapshots, and breakpoint debugging. Breakpoint debugging allows developers to pause code execution at specific points to evaluate its behavior. To set up breakpoint debugging in VSCode or WebStorm, developers need to create a launch configuration file with the appropriate settings. Cloudflare Workers' runtime, workerd, enables breakpoint debugging by adding an I/O thread for handling CDP messages and source maps for rendering original source code in the debugger. Future improvements include automatic attachment of IDEs to dev servers and support for Node-style logging hooks.

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