hard20 pts · first answer countsjavascripttypescriptinterfaces

Typing a global on window

An analytics script sets window.dataLayer. In a module file, how do you tell TypeScript about it?

A.type Window = { dataLayer: unknown[] } at the topB.(window as Window).dataLayer = [] in each fileC.interface Window extends dataLayer {} in the moduleD.declare global { interface Window { dataLayer: unknown[] } }

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Typing a global on window

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