Manually adding/removing type definitions to global bindings in C++

[bkerec]

I am working on code analysis tool that works with multiple files. In order to properly detecting global variables from other files, I have to manually add them to luau. For that I'm using addGlobalBinding function which works very well. The issue is that if I want to change a definition of a manually added table (adding/removing table fields,...), I don't have a proper solution for that, or at least I didn't found one. What I'm currently doing is creating a new luau frontend and adding all custom stuff again. Is there a proper way of removing/updating a type definition from global bindings?

[vegorov-rbx]

One way to do it is to use getGlobalBinding and update it:

auto debugLib = Luau::getMutable<Luau::TableType>(Luau::getGlobalBinding(globals, "debug"));

debugLib->props["custom"] = Luau::makeProperty(makeFunction(arena, std::nullopt, {builtinTypes.stringType}, {}), "@luau/global/debug.custom");

[AmaranthineCodices]

Make sure, when you do this, that the arena you use will outlive the module, or you'll very easily create a use-after-free error.

[bkerec]

Thanks for the reply. Proposed solution works nicely. I will also add a code to remove global entirely (for people that might browse this thread):

Luau::AstName name = globals->globalNames.names->getOrAdd("debug");
globals->globalScope->bindings.erase(name);