How to disambiguate the namespaces of react-native and node?

I am using the setTimeout function which is defined in @types/node and @types/react-native (both picked up by Typescript without any imports at the top of the file).

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Typescript is defaulting to node, which I do not want. I want to use the react-native declaration. How can I disambiguate the setTimeout call?

Thanks for any help. :)