@jsopen/objects/esm/is-object.js

Helper utilities for working with JavaScript objects and arrays

const objCtorStr = Function.prototype.toString.call(Object);
export function isObject(v) {
    return v && typeof v === 'object' && !Array.isArray(v);
}
export function isPlainObject(obj) {
    if (obj &&
        typeof obj === 'object' &&
        Object.prototype.toString.call(obj) === '[object Object]') {
        const proto = Object.getPrototypeOf(obj);
        /* istanbul ignore next */
        if (!proto)
            return true;
        const ctor = Object.prototype.hasOwnProperty.call(proto, 'constructor') &&
            proto.constructor;
        return (typeof ctor === 'function' &&
            ctor instanceof ctor &&
            Function.prototype.toString.call(ctor) === objCtorStr);
    }
    return false;
}