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Broken example for vm.runInDebugContext(code) #4862
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/cc @nodejs/documentation
Oh, that's because you need to start the debugger first now before you have access to
Debug.scripts(). I'd swap it out for a different example.Like this:
> vm.runInDebugContext('Debug').findScript(process.exit).name 'node.js' > vm.runInDebugContext('Debug').findScript(process.emit).name 'events.js'@bnoordhuis can you share an example of running arbitrary in a vm context?
I think I can get a test for #4819 by running some code in a debug context, but perhaps I am missing some... context (sorry couldn't help it).
When I try something like
const Debug = vm.runInDebugContext('var util = require("util");');I get
undefined:1 var util = require("util"); ^ ReferenceError: require is not defined at <anonymous>:1:12
As the definition of runInDebugContext is
vm.runInDebugContext(code)I thought I could feed arbitrary code. It appears that this context does not by default have access to all the node bits in the main context (this is a guess).I'll dig into the c++ and report back
As the definition of runInDebugContext is vm.runInDebugContext(code) I thought I could feed arbitrary code. It appears that this context does not by default have access to all the node bits in the main context (this is a guess).
That's correct. It's a clean slate JS VM with debugger bits but no node bits. It's similar to
vm.runInNewContext(code)in that respect, except that doesn't even have debugger bits.@bnoordhuis ahhh. That makes a lot of sense. I'll dig into the debugger source and see how it sets up the environment. That is a bit out of scope for this issue though, so I'll try and put together a working example for VM and perhaps some documentation about the context
Did you figure out how to do it?
- added a commit that references this issue
on May 17, 2016 - added 2 commits that reference this issue
on May 18, 2016
The current example fails
The error I receive is
Debug.scripts().forEach(function(script) { ^ illegal accessWill do more research and post in this thread