How to debug with VSCode when making a nyc coverage report? - node.js

Question

I am trying to debug when running nyc instead of just while running the mocha tests, so I won't have to run tests twice each time.
VSCode runs the coverage and shows it to me, but it will not stop or verify breakpoints, how do I set it to properly debug?
Is it even possible?
My launch configuration:
{
"type": "node",
"request": "launch",
"name": "Coverge",
"program": "/usr/local/bin/nyc",
"args": [
"${workspaceFolder}/node_modules/mocha/bin/_mocha",
"-u",
"tdd",
"--timeout",
"999999",
"--colors",
"${workspaceFolder}/tests/*/*"
],
"skipFiles": [
"${workspaceFolder}/node_modules/**/*.js"
],
"env": {},
"outputCapture": "std",
"internalConsoleOptions": "openOnSessionStart"
}

Answer 1

I got your back bro.
Since NYC runs the subprocess as a spawn it would not work. But you can run a what is called a Compound Launch, which in practice runs 2 processes and the first one connects to the second one that is there waiting, listening to a port (9229 by default) and then voila.
{
// Use IntelliSense to learn about possible attributes.
// Hover to view descriptions of existing attributes.
// For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
"version": "0.2.0",
"configurations": [
{
"type": "node",
"request": "launch",
"name": "Coverage",
"skipFiles": [
"<node_internals>/**"
],
"program": "${workspaceFolder}/node_modules/.bin/nyc",
"args": [
"-x","test","--reporter=lcov","--reporter=text",
"node", "--inspect-brk",
"./node_modules/.bin/mocha", "test", "--recursive", "--timeout=300000"
]
}
,
{ // https://code.visualstudio.com/Docs/editor/debugging#_launch-versus-attach-configurations
"type": "node",
"name": "AttachMocha",
"request": "attach",
"port": 9229
}
],
// https://code.visualstudio.com/Docs/editor/debugging#_compound-launch-configurations
"compounds": [
{
"name": "NYC/Mocha",
"configurations": ["AttachMocha", "Coverage"]
}
]
}
you are going to see NYC/Mocha on your debug run list.