import { isDate, isObject, isUndefinedOrNull } from './inspect';
import { keys } from './object';
import { toString } from './string';

// Recursively stringifies the values of an object, space separated, in an
// SSR safe deterministic way (keys are sorted before stringification)
//
//   ex:
//     { b: 3, c: { z: 'zzz', d: null, e: 2 }, d: [10, 12, 11], a: 'one' }
//   becomes
//     'one 3 2 zzz 10 12 11'
//
// Strings are returned as-is
// Numbers get converted to string
// `null` and `undefined` values are filtered out
// Dates are converted to their native string format
var _stringifyObjectValues = function stringifyObjectValues(value) {
  if (isUndefinedOrNull(value)) {
    return '';
  }
  // Arrays are also object, and keys just returns the array indexes
  // Date objects we convert to strings
  if (isObject(value) && !isDate(value)) {
    return keys(value).sort() // Sort to prevent SSR issues on pre-rendered sorted tables
    .map(function (k) {
      return _stringifyObjectValues(value[k]);
    }).filter(function (v) {
      return !!v;
    }) // Ignore empty strings
    .join(' ');
  }
  return toString(value);
};
export { _stringifyObjectValues as stringifyObjectValues };