@js-utilities/typecheck
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0.1.6 • Public • Published

Type checking library

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A set of super-simple type checkers. Each checker returns boolean value. Most checkers are typescript type predicates.

Installation

npm i -S @js-utilities/typecheck

Usage example

import { isCallable } from "@js-utilities/typecheck";

const a: unknown = global.value;

if (isCallable(a)) a();

Available checkers:

Checker Return type
isCallable boolean
isFunction value is Function
isArrowFunction boolean
isArray<T> value is T[]
isObject<T> value is T
isBoolean value is boolean
isUndefined value is undefined
isNumber value is number
isString value is string
isSymbol value is symbol
isNull value is null
isMap<T, U> value is Map<T, U>
isSet<T> value is Set<T>
isWeakSet<T> value is WeakSet<T>
isWeakMap<T, U> value is WeakMap<T, U>
isPromise<T> value is Promise<T>

License

MIT License

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Install

npm i @js-utilities/typecheck

Weekly Downloads

365

Version

0.1.6

License

MIT

Unpacked Size

20.4 kB

Total Files

12

Last publish

Collaborators

  • shapovalov_v