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- var weakMemoize = function weakMemoize(func) {
- // $FlowFixMe flow doesn't include all non-primitive types as allowed for weakmaps
- var cache = new WeakMap();
- return function (arg) {
- if (cache.has(arg)) {
- // $FlowFixMe
- return cache.get(arg);
- }
-
- var ret = func(arg);
- cache.set(arg, ret);
- return ret;
- };
- };
-
- export default weakMemoize;
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