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rmbrntt/react-rerender-snippet.js

Created March 29, 2019 14:50
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react-rerender-snippet.js
componentDidUpdate(prevProps, prevState) {
Object.entries(this.props).forEach(([key, val]) =>
prevProps[key] !== val && console.log(`Prop '${key}' changed`)
);
Object.entries(this.state).forEach(([key, val]) =>
prevState[key] !== val && console.log(`State '${key}' changed`)
);
}
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rmbrntt commented Mar 29, 2019

just a quick piece of code to pop in and double check if unnecessary re-renders are happening.

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