TypeTags .Function

Overview#

Every JavaScript function is actually a Function object. This can be seen with the code (function(){}).constructor === Function, which returns true.

Usage#

import { TypeTags } from 'typetags'

console.log(TypeTags.Function)
// → [object Function]

Predicate#

.isFunction(value)#

• Checks if value is or has a default Function type tag.

const { TypeTags } = require('typetags')

function sayHi() {
  return 'Oh, hi!'
}

TypeTags.isFunction(sayHi)
// → true

TypeTags.isFunction(sayHi.toString())
// → false

Metadata (TType)#

Signature#

declare type ITypeTags = {
  [key in Types | NestedTypes]: Tags
}

declare interface Predicate {
  predicate(value: any): boolean
}

See MDN Web Docs#