TypeScript for JavaScript Developers Part 9: Custom Types with Generics

In this short clip, a custom type is defined using generics to define a "predicate" or a simple method that takes an item of a certain type and returns a boolean. This simplifies the definition of the "find" function but doesn't change any of the generated JavaScript.

[hakanviajando]

Do you "must" use the word Predicate or could it be anything? Can I make something like "type MapByName<T> = (item: T) => String" ?