File: lastPropertyInLiteralWins.ts

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node-typescript 4.9.5%2Bds1-2
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interface Thing {
    thunk: (str: string) => void;
}
function test(thing: Thing) {
    thing.thunk("str");
}
test({ // Should error, as last one wins, and is wrong type
    thunk: (str: string) => {},
    thunk: (num: number) => {}
});

test({ // Should be OK.  Last 'thunk' is of correct type
    thunk: (num: number) => {},
    thunk: (str: string) => {}
});