TypeScript Version: 2.2.2

according to https://url.spec.whatwg.org/#urlsearchparams
URLSearchParams is iterable, but it is not iterable in typescript now.

this code failed to compile but run successful as plain JavaScript in google chrome.
Code

// A *self-contained* demonstration of the problem follows... const params = new URLSearchParams() params.set('k', 'v') for(let [key, value] of params) { console.log(key, value) }

Expected behavior:
compile successfully
Actual behavior:
error TS2488: Type must have a 'Symbol.iterator' method that returns an iterator.