If you use webpack you can use sass-loader to exportvariables like:
$animation-length-ms: $animation-length + 0ms;
:export {
animationMillis: $animation-length-ms;
}
and import them like
import styles from '../styles/animation.scss'
const millis = parseInt(styles.animationMillis)
https://blog.bluematador.com/posts/how-to-share-variables-between-js-and-sass/