import {BooleanT} from './BooleanT.js'
import {onType} from '#core/helpers.js'
import {Returns, Type, TypeOfTypes, Undefined} from '#core/Type.js'
import {NumberT} from '#number/NumberT.js'

const bool = f => Returns(BooleanT, f)

export const boolean = onType(
   BooleanT, bool(p => p),
   NumberT, bool(a => !!a),
   TypeOfTypes, bool(() => true),
   Undefined, bool(() => false),
   [], bool(() => false)
)