File: narrowingRestGenericCall.ts

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node-typescript 4.8.4%2Bds1-2
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interface Slugs {
  foo: string;
  bar: string;
}

function call<T extends object>(obj: T, cb: (val: T) => void) {
  cb(obj);
}

declare let obj: Slugs;
call(obj, ({foo, ...rest}) => {
  console.log(rest.bar);
});