method URLSearchParams.prototype.keys Usage in Deno```typescript import { URLSearchParams } from "node:node__url.d.ts"; ``` URLSearchParams.prototype.keys(): IterableIterator<string> Returns an ES6 `Iterator` over the names of each name-value pair. ```js const params = new URLSearchParams('foo=bar&foo=baz'); for (const name of params.keys()) { console.log(name); } // Prints: // foo // foo ``` Return Type IterableIterator<string>