I am encountering a delay in the initial loading of my web app, even after implementing various improvements like using only critical CSS during server side rendering. Unfortunately, post-SSR, React still generates unnecessary CSS rules that are not utilized at that moment. Therefore, I am wondering if there is a way to divide the CSS and load it on demand, such as when the route changes.
Any assistance on this matter would be greatly valued. Thank you in advance!
Consider utilizing css-modules for your styling needs.
/* styles.css */
.className {
color: green;
}
Assuming you have the aforementioned styles file, you can utilize the following code to implement the styles.
import styles from "./styles.css";
const ExampleComponent = () => (
<div className={styles.className}>
Hello Universe!
</div>
);
Ensure to configure webpack in order to enable the importing of CSS files.
Components that are imported dynamically or asynchronously are easily handled with the use of react-loadable.
My problem was easily solved thanks to the incredible 'react-universal-component' package. If you're interested, you can find out more about it here and here. I found it very useful to separate my CSS files by components and call them directly from each component, ensuring that only the necessary styles are loaded.
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