Goto declaration from argument parameter

[avin-kavish]

I want to check the type of a parameter of a function and navigate to the declaration if it's within the local project. So far I've gotten the type with,

fn.getParameters().forEach(param => {
  const type = param.getType()

  // goto dec of type
})

How do I process the declaration of the type from here?

[donmccurdy]

I had trouble with this too recently. Documentation on the Node/Type/Symbol concepts would be helpful to me as well, but this seems to be working:

for (const decl of type.getSymbol().getDeclarations()) {
  // ...
}

I'm not so sure about checking if it's local to the project. Currently I'm doing that by keeping a list of exported declarations.