Function isPlainObject

packages/common-helpers/src/is-plain-object.ts:5–23

(o: unknown)

}

export function isPlainObject(o: unknown) {
    if (isObject(o) === false) return false;

    // If has modified constructor
    const ctor = (o as { constructor: unknown }).constructor;
    if (ctor === undefined) return true;

    // If has modified prototype
    const prot = (ctor as { prototype: unknown }).prototype;
    if (isObject(prot) === false) return false;

    // If constructor does not have an Object-specific method
    if (Object.prototype.hasOwnProperty.call(prot, 'isPrototypeOf') === false) {
        return false;
    }

    // Most likely a plain Object
    return true;
}