ts-util-is

ts-util-is

TypeScript typeof utility helper with no dependencies. Provides type guards for all common types.

Installation

npm install ts-util-is

Usage

Import everything:

import * as util from 'ts-util-is';

let value: string | any[] = 'hey there';

if (util.isArray(value)) {
    console.log(value.join(' ')); // no TypeScript error!
}

Import only what you need:

import { isArray, isString } from 'ts-util-is';

let value: string | any[] = 'types are fun';

if (isArray(value)) {
    console.log(value.join(' ')); // no TypeScript error!
}

Methods

• isArray()
• isBase64()
• isBoolean()
• isDate()
• isDateValid()
• isDefined()
• isError()
• isFunction()
• isGuid()
• isInfinity()
• isNull()
• isNumber()
• isObject()
• isPlainObject()
• isRegExp()
• isString()
• isSymbol()
• isUndefined()

Changelog

1.1.2 (2017-07-18)

<a name="1.1.1"></a>