TypeTags `.ReferenceError`

Overview

The ReferenceError object represents an error when a non-existent variable is referenced.

️🚫

Since error objects do not have unique type tags, a ReferenceError type tag is the same as any other Error object. If you need to check if an error is an instance of a ReferenceError, use instanceof instead.

Usage

import { TypeTags } from 'typetags'

const catchRefError = () => {
  let res
  try {
    let a = undefinedVariable
  } catch (error) {
    return (res = error instanceof ReferenceError)
  }
}

TypeTags.get(catchRefError) === TypeTags.ReferenceError
// → false

TypeTags.Error === TypeTags.ReferenceError
// → true

console.log(res)
// → true

Metadata (TType)

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

Signature

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

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

TypeTags .ReferenceError

Overview#

Usage#

Metadata (TType)#

Signature#

See MDN Web Docs#

TypeTags `.ReferenceError`

Overview

Usage

Metadata (TType)

Signature

See MDN Web Docs