https://codereview.chromium.org/11274014/diff/1/src/object-observe.js
File src/object-observe.js (right):

https://codereview.chromium.org/11274014/diff/1/src/object-observe.js#newcode54
src/object-observe.js:54:
suggestion:

var state = %GetObjectObservationState();
if (IS_UNDEFINED(state.observerInfoMap)) {
 state.observerInfoMap = createInternalWeakMap();
 state.objectInfoMap = createInternalWeakMap();
}

var observerInfoMap = state.observerInfoMap;
var objectInfoMap = state.objectInfoMap;

https://codereview.chromium.org/11274014/

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