<!-- 🚨 STOP 🚨 𝗦𝗧𝗢𝗣 🚨 𝑺𝑻𝑶𝑷 🚨 Half of all issues filed here are duplicates, answered in the FAQ, or not appropriate for the bug tracker. Even if you think you've found a *bug*, please read the FAQ first, especially the Common "Bugs" That Aren't Bugs section! Please help us by doing the following steps before logging an issue: * Search: https://github.com/Microsoft/TypeScript/search?type=Issues * Read the FAQ: https://github.com/Microsoft/TypeScript/wiki/FAQ Please fill in the *entire* template below. --> <!-- Please try to reproduce the issue with `typescript@next`. It may have already been fixed. --> **TypeScript Version:** 3.1.0-dev.201xxxxx <!-- Search terms you tried before logging this (so others can find this issue more easily) --> **Search Terms:** completion, paren **Code** ```ts type A = 'AAAAA' | 'BBBBBB'; type B<T extends A> = {}; type C = B<('/**/')> ``` **Expected behavior:** `'AAAAA'` or `'BBBBBB'` **Actual behavior:** no completions **Related Issues:** <!-- Did you find other bugs that looked similar? --> #25839 completion cannot walkup useless node (paren type)