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ryanflorence/old-values.js

Created March 26, 2019 22:03
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old-values.js
const startDate =
location.state && location.state.startDate ? location.state.startDate : today
const prevStartRef = useRef(startDate)
let transitionDirection
if (prevStartRef.current !== startDate) {
transitionDirection = startDate < prevStartRef.current ? "earlier" : "later"
prevStartRef.current = startDate
}
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