How to find all the types involved in a node?

How to find all the types involved in a node?

export const TraceConfiguration = {
	register(container?: IContainer): void {
		Object.assign(Tracer, DebugTracer);
	}
};

These types: IContainer, Tracer, DebugTracer for TraceConfiguration node.

or

export type BindingWithBehavior = IBinding & {
    sourceExpression: BindingBehaviorExpression;
};

These types: IBinding , BindingBehaviorExpression for BindingWithBehavior node.

No matter what is the node (Variable, Class, Literal, …) or where is the type (in Parameter, Block, Union, … ).

I want to access all available type.getText() in the whole node.

Does exist any general way to find out whole types that are used in a node? or I should define a specific functionality for each use case.

[dsherret]

Oh sorry, I misread your question originally. You may have to do:

const types = new Set<Type>();
node.forEachDescendant(descendant => {
    if (TypeGuards.isTypedNode(descendant) || TypeGuards.isIdentifier(descendant))
        types.add(descendant.getType());
    else if (TypeGuards.isReturnTypedNode(descendant))
        types.add(descendant.getReturnType());
});

That will get implicit types as well. You may want to filter out any types when you’re done (check Type#isAny())

[dsherret]

@HamedFathi I think you could just do:

const types = new Set<Type>();
node.forEachDescendant(descendant => {
    if (TypeGuards.isTypeNode(descendant))
        types.add(descendant.getType());
});

// or in 4.2.0 (just released)
const types = new Set<Type>(node.forEachDescendantAsArray().filter(TypeGuards.isTypeNode).map(d => d.getType()));

That won’t get all the implicit types in there though.

Side note: Using forEachDescendantAsArray is slightly more efficient than using getDescendants() because getDescendants() will return parsed out token nodes.