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12 lines
294 B
JavaScript

6 years ago
'use strict';
module.exports = function toFastproperties(o) {
function Sub() {}
Sub.prototype = o;
var receiver = new Sub(); // create an instance
function ic() { return typeof receiver.foo; } // perform access
ic();
ic();
return o;
eval("o" + o); // ensure no dead code elimination
}