launch.json settings to enable debugging into ripple emulate

[myusrn]

i'm looking to use vscode to facilitate debugging into "ripple emulate" startup behavior for "npm install ripple-emulator" package in order to look at possible resolutions to this ripple-emulator/ripple#16 feature request.

i'm stuck figuring out what to use in .vscode/launch.json node.js debugging settings, presumably for "program" and "args" properties, in order to make that work. I've tried "program": "${workspaceRoot}/lib/index" + "args": [ "emulate", "--nobrowser" ] but vscode debugger launch doesn't like that.

any pointers on how to get going with this npm package debugging story so i can understand what area of its sources does incoming arguments processing and browser launching in order to create a PR that will add the "--nobrowser" option?

[weinand]

@myusrn node-debug creates the command from the individual attributes of the launch config like this:

<runtimeExecutable> <runtimeArgs> --debug-brk=<port> <program> <args>

If the runtimeExecutable is not specified, it is set to 'node'.

So you can specify an arbitrary program for runtimeExecutable as long as it can deal with all the other arguments.