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// 22.1.3.31 Array.prototype[@@unscopables]
var UNSCOPABLES = require('./$.wks')('unscopables')
, ArrayProto = Array.prototype;
if(ArrayProto[UNSCOPABLES] == undefined)require('./$.hide')(ArrayProto, UNSCOPABLES, {});
module.exports = function(key){
ArrayProto[UNSCOPABLES][key] = true;
};
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