Skip to content

Instantly share code, notes, and snippets.

@lucamug

lucamug/example_type_guard.js

Last active January 20, 2021 11:44
Show Gist options
  • Save lucamug/4fcd72de4fe997db8a20f4e94cb9e1cf to your computer and use it in GitHub Desktop.
Save lucamug/4fcd72de4fe997db8a20f4e94cb9e1cf to your computer and use it in GitHub Desktop.
Download ZIP
Raw
example_type_guard.js
function isFish(pet: Fish | Bird): pet is Fish {
return (pet as Fish).swim !== undefined;
}
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment