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71
node_modules/motion-dom/dist/es/frameloop/batcher.mjs
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71
node_modules/motion-dom/dist/es/frameloop/batcher.mjs
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import { MotionGlobalConfig } from 'motion-utils';
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import { stepsOrder } from './order.mjs';
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import { createRenderStep } from './render-step.mjs';
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const maxElapsed = 40;
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function createRenderBatcher(scheduleNextBatch, allowKeepAlive) {
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let runNextFrame = false;
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let useDefaultElapsed = true;
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const state = {
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delta: 0.0,
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timestamp: 0.0,
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isProcessing: false,
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};
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const flagRunNextFrame = () => (runNextFrame = true);
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const steps = stepsOrder.reduce((acc, key) => {
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acc[key] = createRenderStep(flagRunNextFrame, allowKeepAlive ? key : undefined);
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return acc;
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}, {});
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const { setup, read, resolveKeyframes, preUpdate, update, preRender, render, postRender, } = steps;
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const processBatch = () => {
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const timestamp = MotionGlobalConfig.useManualTiming
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? state.timestamp
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: performance.now();
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runNextFrame = false;
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if (!MotionGlobalConfig.useManualTiming) {
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state.delta = useDefaultElapsed
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? 1000 / 60
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: Math.max(Math.min(timestamp - state.timestamp, maxElapsed), 1);
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}
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state.timestamp = timestamp;
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state.isProcessing = true;
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// Unrolled render loop for better per-frame performance
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setup.process(state);
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read.process(state);
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resolveKeyframes.process(state);
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preUpdate.process(state);
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update.process(state);
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preRender.process(state);
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render.process(state);
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postRender.process(state);
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state.isProcessing = false;
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if (runNextFrame && allowKeepAlive) {
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useDefaultElapsed = false;
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scheduleNextBatch(processBatch);
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}
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};
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const wake = () => {
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runNextFrame = true;
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useDefaultElapsed = true;
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if (!state.isProcessing) {
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scheduleNextBatch(processBatch);
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}
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};
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const schedule = stepsOrder.reduce((acc, key) => {
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const step = steps[key];
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acc[key] = (process, keepAlive = false, immediate = false) => {
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if (!runNextFrame)
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wake();
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return step.schedule(process, keepAlive, immediate);
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};
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return acc;
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}, {});
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const cancel = (process) => {
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for (let i = 0; i < stepsOrder.length; i++) {
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steps[stepsOrder[i]].cancel(process);
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}
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};
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return { schedule, cancel, state, steps };
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}
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export { createRenderBatcher };
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6
node_modules/motion-dom/dist/es/frameloop/frame.mjs
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node_modules/motion-dom/dist/es/frameloop/frame.mjs
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import { noop } from 'motion-utils';
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import { createRenderBatcher } from './batcher.mjs';
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const { schedule: frame, cancel: cancelFrame, state: frameData, steps: frameSteps, } = /* @__PURE__ */ createRenderBatcher(typeof requestAnimationFrame !== "undefined" ? requestAnimationFrame : noop, true);
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export { cancelFrame, frame, frameData, frameSteps };
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20
node_modules/motion-dom/dist/es/frameloop/index-legacy.mjs
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node_modules/motion-dom/dist/es/frameloop/index-legacy.mjs
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import { stepsOrder } from './order.mjs';
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import { frame, cancelFrame } from './frame.mjs';
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/**
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* @deprecated
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*
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* Import as `frame` instead.
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*/
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const sync = frame;
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/**
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* @deprecated
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*
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* Use cancelFrame(callback) instead.
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*/
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const cancelSync = stepsOrder.reduce((acc, key) => {
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acc[key] = (process) => cancelFrame(process);
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return acc;
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}, {});
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export { cancelSync, sync };
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node_modules/motion-dom/dist/es/frameloop/microtask.mjs
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node_modules/motion-dom/dist/es/frameloop/microtask.mjs
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import { createRenderBatcher } from './batcher.mjs';
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const { schedule: microtask, cancel: cancelMicrotask } =
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/* @__PURE__ */ createRenderBatcher(queueMicrotask, false);
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export { cancelMicrotask, microtask };
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12
node_modules/motion-dom/dist/es/frameloop/order.mjs
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node_modules/motion-dom/dist/es/frameloop/order.mjs
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const stepsOrder = [
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"setup", // Compute
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"read", // Read
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"resolveKeyframes", // Write/Read/Write/Read
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"preUpdate", // Compute
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"update", // Compute
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"preRender", // Compute
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"render", // Write
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"postRender", // Compute
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];
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export { stepsOrder };
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92
node_modules/motion-dom/dist/es/frameloop/render-step.mjs
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node_modules/motion-dom/dist/es/frameloop/render-step.mjs
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import { statsBuffer } from '../stats/buffer.mjs';
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function createRenderStep(runNextFrame, stepName) {
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/**
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* We create and reuse two queues, one to queue jobs for the current frame
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* and one for the next. We reuse to avoid triggering GC after x frames.
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*/
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let thisFrame = new Set();
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let nextFrame = new Set();
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/**
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* Track whether we're currently processing jobs in this step. This way
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* we can decide whether to schedule new jobs for this frame or next.
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*/
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let isProcessing = false;
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let flushNextFrame = false;
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/**
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* A set of processes which were marked keepAlive when scheduled.
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*/
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const toKeepAlive = new WeakSet();
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let latestFrameData = {
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delta: 0.0,
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timestamp: 0.0,
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isProcessing: false,
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};
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let numCalls = 0;
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function triggerCallback(callback) {
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if (toKeepAlive.has(callback)) {
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step.schedule(callback);
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runNextFrame();
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}
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numCalls++;
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callback(latestFrameData);
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}
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const step = {
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/**
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* Schedule a process to run on the next frame.
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*/
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schedule: (callback, keepAlive = false, immediate = false) => {
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const addToCurrentFrame = immediate && isProcessing;
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const queue = addToCurrentFrame ? thisFrame : nextFrame;
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if (keepAlive)
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toKeepAlive.add(callback);
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if (!queue.has(callback))
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queue.add(callback);
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return callback;
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},
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/**
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* Cancel the provided callback from running on the next frame.
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*/
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cancel: (callback) => {
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nextFrame.delete(callback);
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toKeepAlive.delete(callback);
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},
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/**
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* Execute all schedule callbacks.
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*/
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process: (frameData) => {
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latestFrameData = frameData;
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/**
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* If we're already processing we've probably been triggered by a flushSync
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* inside an existing process. Instead of executing, mark flushNextFrame
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* as true and ensure we flush the following frame at the end of this one.
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*/
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if (isProcessing) {
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flushNextFrame = true;
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return;
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}
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isProcessing = true;
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[thisFrame, nextFrame] = [nextFrame, thisFrame];
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// Execute this frame
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thisFrame.forEach(triggerCallback);
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/**
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* If we're recording stats then
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*/
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if (stepName && statsBuffer.value) {
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statsBuffer.value.frameloop[stepName].push(numCalls);
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}
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numCalls = 0;
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// Clear the frame so no callbacks remain. This is to avoid
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// memory leaks should this render step not run for a while.
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thisFrame.clear();
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isProcessing = false;
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if (flushNextFrame) {
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flushNextFrame = false;
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step.process(frameData);
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}
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},
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};
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return step;
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}
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export { createRenderStep };
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31
node_modules/motion-dom/dist/es/frameloop/sync-time.mjs
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31
node_modules/motion-dom/dist/es/frameloop/sync-time.mjs
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import { MotionGlobalConfig } from 'motion-utils';
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import { frameData } from './frame.mjs';
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let now;
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function clearTime() {
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now = undefined;
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}
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/**
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* An eventloop-synchronous alternative to performance.now().
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*
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* Ensures that time measurements remain consistent within a synchronous context.
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* Usually calling performance.now() twice within the same synchronous context
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* will return different values which isn't useful for animations when we're usually
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* trying to sync animations to the same frame.
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*/
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const time = {
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now: () => {
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if (now === undefined) {
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time.set(frameData.isProcessing || MotionGlobalConfig.useManualTiming
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? frameData.timestamp
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: performance.now());
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}
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return now;
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},
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set: (newTime) => {
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now = newTime;
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queueMicrotask(clearTime);
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},
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};
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export { time };
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