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nairihar/custom_WeakMap_problem_example.js

Last active July 6, 2018 19:59
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JavaScript series, part 3, WeakMap and WeakSet, medium
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custom_WeakMap_problem_example.js
const weakMap = new WeakMap(); // be sure you using custom WeakMap not native
const obj = Object.freeze({ hello: true });
weakMap.set(obj, 12);
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