Object.getOwnPropertyDescriptors accepts undefined (lib.es2017.object.d.ts)

**TypeScript Version:** 3.4.5 **Search Terms:** getOwnPropertyDescriptors **Code** ```ts Object.getOwnPropertyDescriptors(undefined); ``` **Expected behavior:** Undefined is not accepted. **Actual behavior:** Undefined is accepted. **Playground Link:** https://www.typescriptlang.org/play/index.html#src=Object.getOwnPropertyDescriptors(undefined)%3B However, can't seem to enable es2017 in the Playground **Related Issues:** <!-- Did you find other bugs that looked similar? --> n/a