symbol-species-x/src/symbol-species-x.js

System Symbol.species (real or fake)

import hasSymbolSupport from 'has-symbol-support-x';

/**
 * The species accessor property allows subclasses to override the default constructor for objects.
 *
 * Possible values are.
 *
 * Symbol.species
 * '@@species'.
 *
 * @type {symbol|string}
 */
const symbolSpecies = (hasSymbolSupport && Symbol.species) || '@@species'; /* eslint-disable-line compat/compat */

export default symbolSpecies;