'use strict'; var isMap = require('is-map'); var isSet = require('is-set'); var isWeakMap = require('is-weakmap'); var isWeakSet = require('is-weakset'); module.exports = function whichCollection(value) { if (value && typeof value === 'object') { if (isMap(value)) { return 'Map'; } if (isSet(value)) { return 'Set'; } if (isWeakMap(value)) { return 'WeakMap'; } if (isWeakSet(value)) { return 'WeakSet'; } } return false; };