Functional replacement for Object.prototype.hasOwnProperty()

README.md

hasOwn

Failsafe function that uses Object.prototype.hasOwnProperty() and return false in case if target is not a valid object.

Note: It uses arrow functions that may not be supported by some old environments.

You better use lodash/has.

index.d.ts

export function hasOwn(target: any, name: string | symbol): boolean;

index.es.js

export const hasOwn = (
  (has) =>
  (target, property) =>
  Boolean(target && has.call(target, property))
)(Object.prototype.hasOwnProperty);

export default hasOwn;

index.js

'use strict';

Object.defineProperty(exports, '__esModule', { value: true });

const hasOwn = (
  (has) =>
  (target, property) =>
  Boolean(target && has.call(target, property))
)(Object.prototype.hasOwnProperty);

exports.hasOwn = hasOwn;
exports.default = hasOwn;

package.json

{
  "name": "@actualwave/has-own",
  "description": "Functional replacement for Object.prototype.hasOwnProperty()",
  "version": "0.0.3",
  "main": "index.js",
  "module": "index.es.js",
  "types": "index.d.ts",
  "keywords": [
    "js",
    "javascript",
    "Object",
    "hasOwnProperty",
    "has",
    "hasOwn"
  ],
  "homepage": "https://gist.github.com/burdiuz/d81cd59d2d619d921531165fac0e8c77",
  "bugs": {
    "url": "https://gist.github.com/burdiuz/d81cd59d2d619d921531165fac0e8c77",
    "email": "burdiuz@gmail.com"
  },
  "license": "MIT",
  "author": "Oleg Galaburda <burdiuz@gmail.com> (http://actualwave.com/)"
}