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robmazan/countListeners.js

Created February 19, 2020 16:22
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Count listeners under a subtree in Chrome DevTools
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countListeners.js
const countListeners = node => Array.from(node.children).reduce((acc, curr) => acc + countListeners(curr), Object.values(getEventListeners($0)).map(i => i.length).reduce((acc, curr) => acc + curr, 0))
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