pipe (λ)

Schemas may become hard to read as nesting grows, which may be solved by function composition in the form of the provided pipe utility function.

import { nonEmpty, nullable, pipe, string } from '@typeofweb/schema';

pipe(string, nullable, nonEmpty);
// is equivalent to
nonEmpty(nullable(string()));

λ is an alias for pipe:

import { nonEmpty, minStringLength, nil, λ, object, string } from '@typeofweb/schema';

const blogSchema = object({
  title: λ(string, minStringLength(10)),
  description: λ(string, nil),
  href: λ(string, nil, nonEmpty),
  rssUrl: λ(string, nil, nonEmpty),
})();