/*
This file is part of web3.js.

web3.js is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

web3.js is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License
along with web3.js.  If not, see <http://www.gnu.org/licenses/>.
*/

import { TypedArray } from 'web3-types';

// Explicitly check for the
// eslint-disable-next-line @typescript-eslint/ban-types
export const isNullish = (item: unknown): item is undefined | null =>
	// Using "null" value intentionally for validation
	// eslint-disable-next-line no-null/no-null
	item === undefined || item === null;

export const isObject = (item: unknown): item is Record<string, unknown> =>
	typeof item === 'object' &&
	!isNullish(item) &&
	!Array.isArray(item) &&
	!(item instanceof TypedArray);