CLJS debugger

12/21

• vscode communicates to the debug adapter that a breakpoint has been set and where
• a chrome debugging client passes the request to chrome after some source map stuff
• uses the yo code extension skeleton setup

things to do to get it to work:

• close all chrome windows/tabs so you can start a session in debug mode
• in a terminal run chrome --remote-debugging-port=9222
  • if you connect, you'll some readout in the terminal or check localhost:9222/json
• set the URL you want to debug in debugAdapter.ts
• npm run watch in a terminal in vscode
• in the debug panel, select Run Extension
• in the extension host window, open a project w/ cljs
• in launch.json , add this to launch configurations :

{
	"type": "clojurescript",
	"request": "launch",
	"name": "Launch CLJS Debugger"
}

• type must match the type specified in your extension's package.json contributes.debuggers
• go to a .cljs file (this activates the extension)
• set a breakpoint
• in the extension host, run the "Launch CLJS debugger"
• your chrome session should be at the URL specified
• you may have to reload the page; check the debug console; the page should trip on your breakpoint at some point

TODO

• reduce the steps to get this running
  • passing in URL
  • when you get breakpoint from vscode, need to ask the debugger to re-read that file?
    • you can bypass Debugger.scriptParsed if you know the url and the source map info? use setBreakpointByUrl directly?
• add features
  • send debug data back to vscode
  • pause on line in vscode
• the sourcemap reading is janky

Ideas

• seems possible that the debugger itself should be a standalone project/process and this should house the debug adapter?
• integrate w/ shadow?