undefined | Better HN

0 points__s6y ago0 comments

TypeScript supports 'function f(x: any): x is T' as a way to declare that if f returns true, x may pass as type T

0 comments

1 comments · 1 top-level

cyral6y ago

This package has an index.d.ts file that utilizes exactly this.

j / k navigate · click thread line to collapse