typeof-utility

Extended functions for defining and converting data types.

Install

Install with npm:

$ npm install --save typeof-utility

Usage

All functions

import * as Utils from 'typeof-utility';

Or individual functions

import {isString, isNumber, isNumeric} from 'typeof-utility';

const text = "text", infinityValue = 1/0, textNumber = "1";

typeof text === "string"; // boolean -> TRUE
typeof infinityValue === "number"; // boolean -> TRUE
typeof textNumber === "number"; // boolean -> FALSE

isString(text); // boolean -> TRUE, equiv `typeof text === "string"`
isNumber(infinityValue); // boolean -> FALSE
isNumber(textNumber); // boolean -> FALSE
isNumeric(textNumber); // boolean -> TRUE

Documents

| Function | Description |
| --- | --- | | instanceOf(left: any, right: any): boolean | Default instanceof wrapper. | | typeOf(value: any): boolean | Default typeof wrapper. | | isNumber(value: any): boolean | Value is number, not NaN and is finite. | | isNumeric(value: any): boolean | Value is number or a string convertible to a number, not NaN and is finite. | | isScalar(value: any): boolean | Value is null, undefined, string, boolean or number. | | isFunc(value: any): boolean | Value is function. | | isObject(value: any): boolean | Value is object, not null. | | isPlainObject(value: any): boolean | Returns true if an object was created by the Object constructor. | | isString(value: any): boolean | Value is string. | | isBool(value: any): boolean | Value is boolean. | | isNull(value: any): boolean | Value is null or undefined. | | isSymbol(value: any): boolean | Value is classified as a Symbol primitive or object. | | isDOMElement(value: any): boolean | Value is likely a DOM element. | | isWindowElement(value: any): boolean | Object is window. | | isEmpty(value: any): boolean | Value is an empty object, collection, map, or set. | | isWeb(value: any): boolean | The script works in the browser. | | isCli(value: any): boolean | The script is running as a CLI. | | type(value: any): string | Extended Value Type Possible values: Null, Undefined, Array, Date, RegExp, Event, Node, Window, NodeList, Object, Number, NaN, Infinity, Symbol, String, Boolean, Function | | toString(value: any): string | Convert value to string. Warning: if the value is a function, it will be called |

License

Copyright © 2019, GoshaV Maniako. Released under the MIT License.