Function getSafeProp

lib/utils.js:59–60

(obj, prop)

 * @returns {*} The resolved value, or undefined when unsafe/absent
 */
const getSafeProp = (obj, prop) =>
  obj != null && hasOwnInPrototypeChain(obj, prop) ? obj[prop] : undefined;

const kindOf = ((cache) => (thing) => {
  const str = toString.call(thing);