File: typeArgInferenceWithNull.ts

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node-typescript 3.3.3333-1
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// All legal

function fn4<T extends string>(n: T) { }
fn4(null);

function fn5<T extends { x: string }>(n: T) { }
fn5({ x: null });

function fn6<T extends { x: string }>(n: T, fun: (x: T) => void, n2: T) { }
fn6({ x: null }, y => { }, { x: "" }); // y has type { x: any }, but ideally would have type { x: string }