TypeTags .Symbol
Overview
Symbol is a built-in object whose constructor returns a symbol primitive — also called a Symbol value or just a Symbol — that’s guaranteed to be unique.
Usage
import { TypeTags } from 'typetags'
let sym = Symbol('foo')
TypeTags.get(sym) === TypeTags.Symbol// → true
let symObj = Object(sym)
TypeTags.get(symObj) === TypeTags.Symbol// → false
console.log(TypeTags.Symbol)// → [object Symbol]Metadata (TType)
| Metadata | Value |
|---|---|
.type | Symbol |
.tag | [object Symbol] |
.builtin() | undefined |
.getTag() | [object Symbol] |
.hasSpecialArgs() | true |
.instance() | undefined |
.instanceTypeOf() | symbol |
.info() | see more |
.isAvailable() | true |
.isConstructor() | false |
.isFactory() | true |
.isFunction() | true |
.isGlobal() | true |
.isIterator() | false |
.isNested() | false |
.isObject() | false |
.isPrimitive() | true |
.isStringifiable() | true |
.isSyntatic() | false |
.isTypedArray() | false |
.ownKeys() | [length, name, prototype, for, keyFor, asyncIterator, hasInstance, isConcatSpreadable, iterator, match, matchAll, replace, search, species, split, toPrimitive, toStringTag, unscopables] |
.toString() | function toString() { [native code] } |
.typeOf() | function |
Signature
declare type ITypeTags = { [key in Types | NestedTypes]: Tags}
declare interface Predicate { predicate(value: any): boolean}