8 lines
181 B
TypeScript
8 lines
181 B
TypeScript
//@target: ES6
|
|
interface I<T, U> {
|
|
[Symbol.unscopables](x: T): U;
|
|
}
|
|
|
|
declare function foo<T, U>(p1: T, p2: I<T, U>): U;
|
|
|
|
foo("", { [Symbol.unscopables]: s => s.length }); |