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var isObj = require('./isObj');
var isArr = require('./isArr');
var isFn = require('./isFn');
var has = require('./has');
exports = function(val) {
if (!isObj(val)) return false;
var ctor = val.constructor;
if (!isFn(ctor)) return false;
if (!has(ctor.prototype, 'isPrototypeOf')) return false;
return !isArr(val) && !isFn(val);
};
module.exports = exports;