main repo

node_modules/framer-motion/dist/es/value/use-velocity.mjs

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+"use client";
+import { frame } from 'motion-dom';
+import { useMotionValueEvent } from '../utils/use-motion-value-event.mjs';
+import { useMotionValue } from './use-motion-value.mjs';
+
+/**
+ * Creates a `MotionValue` that updates when the velocity of the provided `MotionValue` changes.
+ *
+ * ```javascript
+ * const x = useMotionValue(0)
+ * const xVelocity = useVelocity(x)
+ * const xAcceleration = useVelocity(xVelocity)
+ * ```
+ *
+ * @public
+ */
+function useVelocity(value) {
+    const velocity = useMotionValue(value.getVelocity());
+    const updateVelocity = () => {
+        const latest = value.getVelocity();
+        velocity.set(latest);
+        /**
+         * If we still have velocity, schedule an update for the next frame
+         * to keep checking until it is zero.
+         */
+        if (latest)
+            frame.update(updateVelocity);
+    };
+    useMotionValueEvent(value, "change", () => {
+        // Schedule an update to this value at the end of the current frame.
+        frame.update(updateVelocity, false, true);
+    });
+    return velocity;
+}
+
+export { useVelocity };