/**
 * Safely get a nested property from data
 * If property path doesn't exist, return null
 *
 * ex:  const obj = { a: { b: { c: "Hello!" } } }
 * safeGet(obj, 'a.b.c') // "hello"
 * safeGet(obj, 'a.b.z') // null
 */

safeGet(obj, str) {
  if (typeof obj === 'undefined' || obj === null) {
    return null;
  }

  const [head, ...rest] = str.split('.');
  if (!(head in obj)) {
    return null;
  }

  if (rest.length > 0) {
    return safeGet(obj[head], rest.join('.'));
  } else {
    return obj[head];
  }
},