Description
There are numerous questions as to why any cannot be narrowed from. Despite being natural and intuitive this feature was rejected due to being a serious breaking change to poorly written yet massive code bases.
Please consider putting it behind a flag provided the evident need for it.
TLDR
anyis not what you think it is (poor naming at play)- for narrowing use
type unknown = {} | undefined | null | voidinstead - yes, it's a hot unfortunate mess
- no, there is no painless way to fix it
- yes, you gonna need to fix your
*.d.tsby hands - why? to make average JS developers happy with their less than perfect code
- welcome to the club! get your badge at the reception
UPDATE
@yortus made a branch per #9999 (comment) where narrowing from any works!
try it: npm install typescript-narrowany