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=== tests/cases/compiler/contextualTypingWithGenericSignature.ts ===
// If e is a FunctionExpression or ArrowFunctionExpression with no type parameters and no parameter or return type annotations, and T is a function type with EXACTLY ONE non - generic call signature, then any inferences made for type parameters referenced by the parameters of T’s call signature are fixed(section 4.12.2) and e is processed with the contextual type T, as described in section 4.9.3.
var f2: {
>f2 : <T, U>(x: T, y: U) => T
<T, U>(x: T, y: U): T
>x : T
>y : U
};
f2 = (x, y) => { return x }
>f2 = (x, y) => { return x } : <T, U>(x: T, y: U) => T
>f2 : <T, U>(x: T, y: U) => T
>(x, y) => { return x } : <T, U>(x: T, y: U) => T
>x : T
>y : U
>x : T
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