TypeTags `.NaN`

Overview

The global NaN property is a value representing Not-A-Number.

Usage

import { TypeTags } from 'typetags'

function sanitise(x) {
  if (isNaN(x)) {
    return NaN
  }
  return x
}

const res = sanitise('hey')

console.log(TypeTags.NaN === TypeTags.get(res))
// → true

Metadata (TType)

Metadata	Value
`.type`	`NaN`
`.tag`	`[object Number]`
`.builtin()`	`undefined`
`.getTag()`	`[object Number]`
`.hasSpecialArgs()`	`false`
`.instance()`	`undefined`
`.instanceTypeOf()`	`number`
`.info()`	see more
`.isAvailable()`	`true`
`.isConstructor()`	`false`
`.isFactory()`	`false`
`.isFunction()`	`false`
`.isGlobal()`	`true`
`.isIterator()`	`false`
`.isNested()`	`false`
`.isObject()`	`false`
`.isPrimitive()`	`false`
`.isStringifiable()`	`true`
`.isSyntatic()`	`false`
`.isTypedArray()`	`false`
`.ownKeys()`	`[]`
`.toString()`	`function toString() { [native code] }`
`.typeOf()`	`number`

Signature

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

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

TypeTags .NaN

Overview#

Usage#

Metadata (TType)#

Signature#

See MDN Web Docs#

TypeTags `.NaN`

Overview

Usage

Metadata (TType)

Signature

See MDN Web Docs