main repo

node_modules/framer-motion/dist/es/value/use-will-change/WillChangeMotionValue.mjs

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+import { MotionValue, transformProps, acceleratedValues } from 'motion-dom';
+
+class WillChangeMotionValue extends MotionValue {
+    constructor() {
+        super(...arguments);
+        this.isEnabled = false;
+    }
+    add(name) {
+        if (transformProps.has(name) || acceleratedValues.has(name)) {
+            this.isEnabled = true;
+            this.update();
+        }
+    }
+    update() {
+        this.set(this.isEnabled ? "transform" : "auto");
+    }
+}
+
+export { WillChangeMotionValue };

node_modules/framer-motion/dist/es/value/use-will-change/add-will-change.mjs

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+import { MotionGlobalConfig } from 'motion-utils';
+import { isWillChangeMotionValue } from './is.mjs';
+
+function addValueToWillChange(visualElement, key) {
+    const willChange = visualElement.getValue("willChange");
+    /**
+     * It could be that a user has set willChange to a regular MotionValue,
+     * in which case we can't add the value to it.
+     */
+    if (isWillChangeMotionValue(willChange)) {
+        return willChange.add(key);
+    }
+    else if (!willChange && MotionGlobalConfig.WillChange) {
+        const newWillChange = new MotionGlobalConfig.WillChange("auto");
+        visualElement.addValue("willChange", newWillChange);
+        newWillChange.add(key);
+    }
+}
+
+export { addValueToWillChange };

node_modules/framer-motion/dist/es/value/use-will-change/index.mjs

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+"use client";
+import { useConstant } from '../../utils/use-constant.mjs';
+import { WillChangeMotionValue } from './WillChangeMotionValue.mjs';
+
+function useWillChange() {
+    return useConstant(() => new WillChangeMotionValue("auto"));
+}
+
+export { useWillChange };

node_modules/framer-motion/dist/es/value/use-will-change/is.mjs

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+import { isMotionValue } from 'motion-dom';
+
+function isWillChangeMotionValue(value) {
+    return Boolean(isMotionValue(value) && value.add);
+}
+
+export { isWillChangeMotionValue };