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