Determine the initial node using an identifier in a TypeScript Abstract Syntax Tree

I'm currently navigating through the Typescript AST and gathering certain information.

When I come across a reference to a variable (specifically an Identifier node), I am interested in retrieving the original node, such as a VariableDeclaration.

Is there a more efficient way to accomplish this task rather than traversing the AST from the root again, which seems like a workaround?

Are there any specific features or methods in Typescript that can help with this scenario?

Answer №1

It's actually quite a simple task:

const originalNode = checker.getSymbolAtLocation(node);

That's all you need to do!

With originalNode.valueDeclaration, we now have the original node.

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