TypeTags .FinalizationRegistry

Overview

A FinalizationRegistry object lets you request a callback when an object is garbage-collected.

Usage

import { TypeTags } from 'typetags'
console.log(TypeTags.FinalizationRegistry)
// → [object FinalizationRegistry]

Predicate

.isFinalizationRegistry(value)

  • Checks if value is or has a default FinalizationRegistry type tag.
const { TypeTags } = require('typetags')
let end = new FinalizationRegistry()
TypeTags.isFinalizationRegistry(end)
// → true
TypeTags.isFinalizationRegistry(end.toString())
// → true

Metadata (TType)

MetadataValue
.typeFinalizationRegistry
.tag[object FinalizationRegistry]
.builtin()undefined
.getTag()[object FinalizationRegistry]
.hasSpecialArgs()true
.instance()undefined
.instanceTypeOf()object
.info()see more
.isAvailable()true
.isConstructor()true
.isFactory()false
.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
}

See MDN Web Docs