<!-- 🚨 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:** 3.5.1 <!-- Search terms you tried before logging this (so others can find this issue more easily) --> **Search Terms:** **Code** ```ts function foo<T extends any[]>() { const fn1: (x: string, ...rest: T) => unknown = (x, ..._) => x; const fn2: (...args: never) => unknown = fn1 // error } ``` **Expected behavior:** Assignment of `fn1` to `fn2` should pass. **Actual behavior:** Assignment of `fn1` to `fn2` should fails. **Playground Link:** [link](https://www.typescriptlang.org/play/#code/GYVwdgxgLglg9mABMOcA8AVRBTAHlbMAEwGdEBDMATwG0BdAPgAoBKRAbwChEfEIESUZGACMALkRNcEwQCcYYAOYAaRADoNs7IIkY2AXgaJwAazBwA7kn2TcqjWoD6Bo7gDc3XvzCDhAJgkmB3JZRRIJMGwAN2xZF2MwM0trYRFOAF8gA) **Related Issues:** <!-- Did you find other bugs that looked similar? --> #33457