### Install Svelte Motion dependency

Source: https://svelte-motion.gradientdescent.de/

Install the Svelte Motion package as a development dependency using npm.

```bash
npm install --save-dev svelte-motion
```

--------------------------------

### Implement Hover and Tap Animations

Source: https://svelte-motion.gradientdescent.de/gestures

Use the whileHover and whileTap props to animate elements during user interaction. This example scales the button on hover and rotates it on tap.

```svelte
<Motion let:motion whileHover={{scale:1.2}} whileTap={{rotate:45}}>
    <button use:motion>Click Me</button>
</Motion>
```

--------------------------------

### Define Pan Gesture Handlers

Source: https://svelte-motion.gradientdescent.de/API/gestures

Defines the interface for pan gesture callbacks including start, session start, move, and end events. Requires touch-action CSS rules for proper touch input handling.

```typescript
interface PanHandlers {
  onPan?: (event: MouseEvent | TouchEvent | PointerEvent, info: PanInfo) => void;
  onPanStart?: (event: MouseEvent | TouchEvent | PointerEvent, info: PanInfo) => void;
  onPanSessionStart?: (event: MouseEvent | TouchEvent | PointerEvent, info: EventInfo) => void;
  onPanEnd?: (event: MouseEvent | TouchEvent | PointerEvent, info: PanInfo) => void;
}
```

--------------------------------

### VisualElementConfig Interface

Source: https://svelte-motion.gradientdescent.de/API/visualelement

Defines the configuration object for a VisualElement, specifying its behavior and methods for rendering, layout, and animation. It includes methods for getting base targets, building the element, sorting nodes, making targets animatable, measuring, reading values, resetting and restoring transforms, rendering, removing values, scraping motion values, and more.

```typescript
interface VisualElementConfig <Instance, RenderState, Options> {
  treeType?: string;
  getBaseTarget?(props: MotionProps, key: string): string | number | undefined | MotionValue;
  build(visualElement: VisualElement<Instance>, renderState: RenderState, latestValues: ResolvedValues, projection: TargetProjection, layoutState: LayoutState, options: Options, props: MotionProps): void;
  sortNodePosition?(a: Instance, b: Instance): number;
  makeTargetAnimatable(element: VisualElement<Instance>, target: TargetAndTransition, props: MotionProps, isLive: boolean): TargetAndTransition;
  measureViewportBox(instance: Instance, options: Options): AxisBox2D;
  readValueFromInstance(instance: Instance, key: string, options: Options): string | number | null | undefined;
  resetTransform(element: VisualElement<Instance>, instance: Instance, props: MotionProps): void;
  restoreTransform(instance: Instance, renderState: RenderState): void;
  render(instance: Instance, renderState: RenderState): void;
  removeValueFromRenderState(key: string, renderState: RenderState): void;
  scrapeMotionValuesFromProps: ScrapeMotionValuesFromProps;
}
```

--------------------------------

### Animation Controls with useAnimation in Svelte

Source: https://svelte-motion.gradientdescent.de/animation

Demonstrates how to use the `useAnimation` hook in Svelte Motion to create imperative animation controls. These controls can be passed to the `animate` prop of `Motion` components for starting and stopping animations programmatically.

```javascript
import { useAnimation } from 'svelte-motion'

const controls = useAnimation();
```

--------------------------------

### Create animation controls with useAnimation

Source: https://svelte-motion.gradientdescent.de/API/animation

The useAnimation hook creates an AnimationControls instance used to manually sequence animations across multiple components. The returned object is passed to the animate property of components, enabling programmatic control via the start method.

```TypeScript
const controls = useAnimation();
// Pass to component:
// <motion.div animate={controls} />
// Start animation:
// controls.start({ opacity: 1 });
```

--------------------------------

### None Transition

Source: https://svelte-motion.gradientdescent.de/API/transition

Provides an instant transition, meaning no animation occurs.

```APIDOC
## None Transition

### Description
Instant transition. For internal use only.

### Method
N/A (Configuration Object)

### Endpoint
N/A (Configuration Object)

### Parameters
#### Options
- **type** (boolean) - Required - Set to `false` for an instant transition.

### Request Example
```json
{
  "type": false
}
```

### Response
#### Success Response (N/A - Configuration Object)
This is a configuration object for an animation, not a typical API response.

#### Response Example
N/A
```

--------------------------------

### Utility: createBatcher

Source: https://svelte-motion.gradientdescent.de/API/sharedlayout

Creates a batcher to process VisualElements for synchronized layout updates.

```APIDOC
## FUNCTION createBatcher

### Description
Creates a SyncLayoutBatcher instance to process multiple VisualElements, ensuring layout changes are calculated and applied efficiently.

### Returns
- **SyncLayoutBatcher** (Object) - The batcher instance used for managing layout synchronization.
```

--------------------------------

### Initialize Motion component

Source: https://svelte-motion.gradientdescent.de/

Import the M component from svelte-motion to create animated elements similar to Framer Motion's motion.div.

```svelte
import { M } from 'svelte-motion'

<M.div>
```

--------------------------------

### Manage Component Presence with Delayed Unmounting using usePresence

Source: https://svelte-motion.gradientdescent.de/utilities

The `usePresence` hook provides a store with two values: a boolean indicating if the component is mounted or wants to exit, and a callback to postpone unmounting. This allows for custom exit animations or cleanup before the component is removed from the DOM.

```javascript
import { usePresence } from 'svelte-motion';

const presence = usePresence();
$: status = $presence[0] ? "Hello World" : "Do you really want to exit?";

// In the template, conditionally render a button to trigger the exit:
// {#if !$presence[0]}
//     <button on:click={$presence[1]}>Exit</button>
// {/if}
```

--------------------------------

### Get Scroll Motion Value for Element (Bind:this)

Source: https://svelte-motion.gradientdescent.de/motionvalue

Obtains scroll motion values for a specific HTML element using `useElementScroll`. This method directly binds the element to the `ref` attribute provided by the hook.

```javascript
import { useElementScroll } from 'svelte-motion'

const scrollMotionValue = useElementScroll();

// In template:
// <div bind:this={scrollMotionValue.ref}>...</div>
```

--------------------------------

### Get Scroll Motion Value for Element (Ref Object)

Source: https://svelte-motion.gradientdescent.de/motionvalue

Obtains scroll motion values for a specific HTML element using `useElementScroll`. This method utilizes a React-like ref object where the `current` property is bound to the element.

```javascript
import { useElementScroll } from 'svelte-motion'

const ref = {}
const scrollMotionValue = useElementScroll(ref)

// In template:
// <div bind:this={ref.current}>...</div>
```

--------------------------------

### Motion Advanced Props

Source: https://svelte-motion.gradientdescent.de/API/motion

Advanced configuration interfaces for dynamic variants and inheritance control.

```APIDOC
## [INTERFACE] MotionAdvancedProps

### Description
Provides advanced control over how motion components resolve variants and inherit properties.

### Parameters
- **custom** (any) - Optional - Data used to resolve dynamic variants.
- **inherit** (boolean) - Optional - Set to false to prevent inheriting variant changes from parent components.

### Usage Example
<Motion custom={myCustomData} inherit={false} />
```

--------------------------------

### Gesture Event Handlers

Source: https://svelte-motion.gradientdescent.de/API/gestures

Interfaces for handling drag, hover, and focus interaction events.

```APIDOC
## Gesture Handlers

### Description
Interfaces for tracking component interactions like dragging, hovering, and focusing.

### DragHandlers
- **onDragStart** (Function) - Callback when dragging starts.
- **onDragEnd** (Function) - Callback when dragging ends.
- **onDrag** (Function) - Callback during drag movement.

### HoverHandlers
- **whileHover** (VariantLabels | TargetAndTransition) - Animation applied during hover.
- **onHoverStart** (Function) - Callback on hover start.
- **onHoverEnd** (Function) - Callback on hover end.

### FocusHandlers
- **whileFocus** (VariantLabels | TargetAndTransition) - Animation applied during focus.
```

--------------------------------

### VisualElementDragControls Class

Source: https://svelte-motion.gradientdescent.de/API/visualelement

Manages drag gesture interactions for a VisualElement. It provides methods to start, resolve, cancel, and stop drag operations, including snapping to cursor, updating axis values, setting properties, and managing motion. It also handles constraint resolution for both layout and refs.

```typescript
class VisualElementDragControls {
  start: (originEvent: MouseEvent | TouchEvent | PointerEvent, { snapToCursor, cursorProgress }?: DragControlOptions) => void;
  resolveDragConstraints: () => void;
  resolveRefConstraints: (layoutBox: AxisBox2D, constraints: Node) => { x: { min: number, max: number }, y: { min: number, max: number } };
  cancelDrag: () => void;
  stop: (event: MouseEvent | TouchEvent | PointerEvent, info: PanInfo) => void;
  snapToCursor: (point: Point2D) => boolean;
  updateAxis: (axis: DragDirection, point: Point2D, offset?: Point2D) => void;
  updateAxisMotionValue: (axis: DragDirection, offset: Point2D) => void;
  updateVisualElementAxis: (axis: DragDirection, point: Point2D) => void;
  setProps: (props: DragControlsProps & MotionProps) => void;
  stopMotion: () => void;
  scalePoint: () => void;
  updateConstraints: (onReady?: () => void) => void;
  mount: (visualElement: VisualElement) => () => void;
}
```

--------------------------------

### Utility: createCrossfader

Source: https://svelte-motion.gradientdescent.de/API/sharedlayout

Creates a crossfader instance to manage transitions between visual elements.

```APIDOC
## FUNCTION createCrossfader

### Description
Initializes a Crossfader instance to handle complex animation states between visual elements.

### Returns
- **Crossfader** (Object) - An object containing methods: isActive(), getCrossfadeState(), toLead(), fromLead(), setOptions(), reset(), stop(), and getLatestValues().

### Options (CrossfadeAnimationOptions)
- **lead** (VisualElement) - Optional - The leading element.
- **follow** (VisualElement) - Optional - The following element.
- **crossfadeOpacity** (boolean) - Optional - Whether to animate opacity during crossfade.
```

--------------------------------

### Layout Props Configuration

Source: https://svelte-motion.gradientdescent.de/API/measure

Interface defining properties for components to support automatic layout animations. Includes configuration for shared layout transitions and completion callbacks.

```typescript
interface LayoutProps {
	layout?: boolean | "position";
	layoutId?: string;
	onLayoutAnimationComplete?: () => void;
}
```

--------------------------------

### Tween Animation Configuration

Source: https://svelte-motion.gradientdescent.de/API/transition

Configuration object for defining duration-based tween animations in Svelte Motion.

```APIDOC
## Tween Configuration

### Description
An animation interface that animates between two or more values over a specific duration of time. This is the default animation for non-physical values.

### Parameters
#### Configuration Properties
- **type** (string) - Optional - Set to "tween" to explicitly define a duration-based animation.
- **duration** (number) - Optional - The duration of the animation in seconds. Defaults to 0.3 or 0.8 for keyframes.
- **ease** (Easing | Easing[]) - Optional - The easing function(s) to apply to the animation.
- **times** (number[]) - Optional - Array of values between 0 and 1 determining when each keyframe is reached.
- **easings** (Easing[]) - Optional - Array of easing functions to apply between each keyframe.
- **from** (number | string) - Optional - The starting value for the animation. Defaults to the current state.

### Request Example
{
  "type": "tween",
  "duration": 0.5,
  "ease": "easeInOut",
  "from": 0
}

### Response
#### Success Response (N/A)
- This configuration is applied internally by the Svelte Motion engine to update component styles over time.
```

--------------------------------

### Implement Motion Elements with M Shorthand

Source: https://svelte-motion.gradientdescent.de/motion

The M shorthand provides a quick way to add motion to standard HTML elements. While convenient, it limits direct access to native DOM directives like on:click.

```svelte
<script>
    import { M } from 'svelte-motion'
</script>

<M.h1>A big motion header</M.h1>
<M.div>A big motion header</M.div>
<M.button>A motion button</M.button>
```

--------------------------------

### Keyframes Transition

Source: https://svelte-motion.gradientdescent.de/API/transition

Animates between multiple values using keyframes. The sequence can be arranged using duration, easing functions, and specific time points.

```APIDOC
## Keyframes Transition

### Description
Keyframes tweens between multiple `values`. These tweens can be arranged using the `duration`, `easings`, and `times` properties.

### Method
N/A (Configuration Object)

### Endpoint
N/A (Configuration Object)

### Parameters
#### Options
- **type** (string) - Optional - Set to `"keyframes"` to use keyframes animation. Defaults to `"tween"`.
- **times** (number[]) - Optional - An array of numbers between 0 and 1, where `1` represents the `total` duration. Each value represents at which point during the animation each item in the animation target should be hit. Defaults to an array of evenly-spread durations.
- **ease** (Easing | Easing[]) - Optional - An array of easing functions for each generated tween, or a single easing function applied to all tweens. This array should be one item less than `values`.
- **duration** (number) - Optional - The total duration of the animation. Defaults to `0.3`.
- **repeatDelay** (number) - Optional - Delay before repeating the animation.
- **values** (any[]) - Required - An array of values to tween between.

### Request Example
```json
{
  "type": "keyframes",
  "duration": 1,
  "values": [0, 100, 50, 200],
  "times": [0, 0.3, 0.7, 1],
  "ease": "easeInOut"
}
```

### Response
#### Success Response (N/A - Configuration Object)
This is a configuration object for an animation, not a typical API response.

#### Response Example
N/A
```

--------------------------------

### Update build dependencies

Source: https://svelte-motion.gradientdescent.de/

Resolve Terser unexpected token errors by updating the rollup-plugin-terser package to the latest version.

```bash
npm install --save-dev rollup-plugin-terser@latest
```

--------------------------------

### Configure Global Transitions with MotionConfig

Source: https://svelte-motion.gradientdescent.de/motionconfig

The MotionConfig component allows developers to wrap multiple Motion components to share a unified transition configuration. This simplifies animation management by applying properties like duration globally to all children.

```svelte
<script>
    import { MotionConfig } from 'svelte-motion'
</script>

<MotionConfig transition={{duration:1}}>
    ...
</MotionConfig>
```

--------------------------------

### Accessing Svelte Motion Contexts

Source: https://svelte-motion.gradientdescent.de/API/context

Demonstrates how to retrieve Svelte Motion contexts using Svelte's getContext function, providing a fallback to the default context factory if the context is not present in the component tree.

```javascript
import { LayoutGroupContext } from 'svelte-motion';
import { getContext } from 'svelte';

const layoutGroupContext = getContext(LayoutGroupContext) || LayoutGroupContext();
```

```javascript
import { MotionConfigContext } from 'svelte-motion';
import { getContext } from 'svelte';

const motionConfigContext = getContext(MotionConfigContext) || MotionConfigContext();
```

```javascript
import { PresenceContext } from 'svelte-motion';
import { getContext } from 'svelte';

const presenceContext = getContext(PresenceContext) || PresenceContext();
```

```javascript
import { SharedLayoutContext } from 'svelte-motion';
import { getContext } from 'svelte';

const sharedLayoutContext = getContext(SharedLayoutContext) || SharedLayoutContext();
```

--------------------------------

### Cycle Through Elements with useCycle

Source: https://svelte-motion.gradientdescent.de/utilities

The `useCycle` hook returns a Svelte store that allows you to cycle through a provided list of elements. It includes a `next` method to advance to the next element in the cycle.

```javascript
import { useCycle } from 'svelte-motion';

const cycleItems = ['item1', 'item2', 'item3'];
const currentItem = useCycle(cycleItems);

// To cycle to the next item:
// currentItem.next();

// The current item can be accessed via $currentItem
```

--------------------------------

### Orchestrate Animation Timing with Svelte Motion

Source: https://svelte-motion.gradientdescent.de/API/transition

Configure the timing and sequencing of animations, including delays and stagger effects for child components. Options like `delay`, `when`, `delayChildren`, `staggerChildren`, and `staggerDirection` provide fine-grained control over animation playback.

```typescript
interface Orchestration {
  delay?: number;
  when?: false | "beforeChildren" | "afterChildren" | string;
  delayChildren?: number;
  staggerChildren?: number;
  staggerDirection?: number;
}
```

--------------------------------

### Motion Component API

Source: https://svelte-motion.gradientdescent.de/API/motion

Defines the core Motion component properties and configuration for animating Svelte elements.

```APIDOC
## [COMPONENT] <Motion>

### Description
The Motion component is the primary interface for applying animations to Svelte elements. It supports standard DOM elements and SVG elements via the `isSVG` prop.

### Parameters
#### Props
- **isSVG** (boolean) - Optional - Set to true if the component is an SVG element like circle or path.
- **forwardMotionProps** (boolean) - Optional - Whether to forward motion props to the underlying element.
- **initial** (boolean | Target | VariantLabels) - Optional - Initial values or variant labels to start in.
- **style** (MotionStyle) - Optional - Enhanced CSS style object supporting MotionValues.
- **transformTemplate** (function) - Optional - Custom function to generate transform strings.

### Request Example
<Motion let:motion let:props>
  <div use:motion {...props} />
</Motion>

### Response
#### Slots
- **motion** (action) - The action to pass to the child element for animation.
- **props** (object) - Unused props to be passed down to the child component.
```

--------------------------------

### Hooks: usePresence & useIsPresent

Source: https://svelte-motion.gradientdescent.de/API/presence

Hooks to track the presence state of a component within an AnimatePresence container.

```APIDOC
## usePresence

### Description
Returns a Readable store containing the presence state. If the component is exiting, it provides a `safeToRemove` function that must be called to finalize removal.

### Return Value
- **Readable<[boolean, (() => void)?]>** - Returns [true, null] (AlwaysPresent), [true] (Present), or [false, safeToRemove] (NotPresent).

## useIsPresent

### Description
Returns a simple boolean Readable store indicating whether the component is currently present in the tree.

### Return Value
- **Readable<boolean>** - True if present, false if exiting.
```

--------------------------------

### Basic Motion Component Syntax in Svelte

Source: https://svelte-motion.gradientdescent.de/animation

Demonstrates the fundamental syntax for using the `Motion` component in Svelte, which is analogous to `motion.div` in framer-motion. It utilizes a slot prop to pass an action to an inner DOM element.

```svelte
<Motion let:motion><div use:motion/></Motion>
```

--------------------------------

### Check Component Presence with useIsPresent

Source: https://svelte-motion.gradientdescent.de/utilities

The `useIsPresent` hook returns a readable store that indicates whether a component wrapped with `AnimatePresence` is currently mounted or exiting. This allows for conditional rendering or animations based on the component's presence.

```javascript
import { useIsPresent } from 'svelte-motion';

const isPresent = useIsPresent();

// Use the store's value in your template or script:
$: status = $isPresent ? "Hello World" : "Goodbye";
```

--------------------------------

### Define Generic Transition Properties in Svelte Motion

Source: https://svelte-motion.gradientdescent.de/API/transition

A flexible definition for transitions that can accept various animation types or a map of transition definitions. This interface allows for custom transition configurations.

```typescript
type PermissiveTransitionDefinition = { [key: string]: any };
```

--------------------------------

### Combine Transition Definitions in Svelte Motion

Source: https://svelte-motion.gradientdescent.de/API/transition

Define a transition using a map where keys represent animation states and values are specific transition definitions. This allows for complex, state-dependent animations.

```typescript
type TransitionMap = Orchestration & { [key: string]: TransitionDefinition };
```

--------------------------------

### Implement Crossfade Animation with AnimateSharedLayout

Source: https://svelte-motion.gradientdescent.de/layout

Demonstrates how to enable crossfade transitions between different layout targets by setting the type property on the AnimateSharedLayout component. This is useful for smooth visual transitions when elements appear or disappear.

```svelte
<AnimateSharedLayout type="crossfade">
  <!-- Content goes here -->
</AnimateSharedLayout>
```

--------------------------------

### Animation Lifecycle Callbacks in Svelte Motion

Source: https://svelte-motion.gradientdescent.de/animation

Explains how to use lifecycle props like `onUpdate`, `onAnimationStart`, and `onAnimationComplete` with the `Motion` component in Svelte. These callbacks allow you to hook into the animation's progress and completion.

```javascript
const onUpdate = ({opacity,x}) => {//do something}
```

```svelte
<Motion animate={\"myVariant\"} onComplete={(definition)=>{/*definition is \"myVariant\" */}}>
<Motion animate={{x:100,opacity:0}} onComplete=={(definition)=>{/*definition is {x:100,opacity:0}*/}}/>
```

--------------------------------

### Configure MotionConfig Component

Source: https://svelte-motion.gradientdescent.de/API/mconf

The MotionConfig component acts as a provider to set default transitions and static behavior for all descendant motion components. It accepts props such as transition, isStatic, and transformPagePoint.

```svelte
<MotionConfig transition={{ duration: 0.5, ease: "easeInOut" }} isStatic={false}>
  <slot />
</MotionConfig>
```

--------------------------------

### Implement Spring Physics Animations in Svelte Motion

Source: https://svelte-motion.gradientdescent.de/API/transition

Animate elements using spring physics for realistic motion. Configure `stiffness`, `damping`, `mass`, `duration`, `bounce`, `restSpeed`, and `restDelta` to control the spring's behavior. This is the default animation type for physical values.

```typescript
interface Spring extends Repeat {
  type: "spring";
  stiffness?: number;
  damping?: number;
  mass?: number;
  duration?: number;
  bounce?: number;
  restSpeed?: number;
  restDelta?: number;
  from?: number | string;
  velocity?: number;
}
```

--------------------------------

### Define All Possible Transition Types in Svelte Motion

Source: https://svelte-motion.gradientdescent.de/API/transition

A union type representing all available transition definitions, including spring, tween, keyframes, inertia, just, none, and permissive definitions. This provides a comprehensive way to specify animation behavior.

```typescript
type TransitionDefinition = Tween | Spring | Keyframes | Inertia | Just | None | PermissiveTransitionDefinition;
```

--------------------------------

### Draggable Component Configuration

Source: https://svelte-motion.gradientdescent.de/API/gestures

Defines the properties and event handlers available for enabling and configuring drag gestures on Svelte Motion components.

```APIDOC
## DraggableProps

### Description
Configuration interface for enabling drag gestures on a component. Extends DragHandlers for event callbacks.

### Parameters
#### Request Body
- **drag** (boolean | "x" | "y") - Optional - Enable dragging. Defaults to false.
- **whileDrag** (VariantLabels | TargetAndTransition) - Optional - Animation properties while dragging.
- **dragConstraints** (false | BoundingBox2D | Node) - Optional - Defines the permitted draggable area.
- **dragElastic** (boolean | number | Partial<BoundingBox2D>) - Optional - Degree of movement outside constraints. Defaults to 0.5.
- **dragMomentum** (boolean) - Optional - Apply momentum after release. Defaults to true.
- **dragControls** (DragControls) - Optional - External controls to initiate dragging.
- **dragListener** (boolean) - Optional - Whether to attach automatic drag listeners. Defaults to true.

### Request Example
{
  "drag": "x",
  "dragElastic": 0.2,
  "dragMomentum": true
}
```

--------------------------------

### Initialize MotionValue with useMotionValue

Source: https://svelte-motion.gradientdescent.de/API/motionvalue

Creates a MotionValue instance to track state and velocity. This is typically used for manual control or passing values into animated components.

```typescript
import { useMotionValue } from "svelte-motion";

const x = useMotionValue(0);
x.set(100);
```

--------------------------------

### Create Custom Motion Components

Source: https://svelte-motion.gradientdescent.de/motion

Developers can create reusable motion components by wrapping the Motion component and using slot props to forward events and attributes to the underlying DOM element.

```svelte
<script>
    import Motion from "svelte-motion";
</script>

<Motion {...$$restProps} let:motion let:props>
	<button {...props} use:motion on:click><slot/></button>
</Motion>
```

--------------------------------

### Basic Animation with Svelte Motion

Source: https://svelte-motion.gradientdescent.de/animation

Illustrates a simple Svelte component that uses the `Motion` component to animate a div's rotation. It employs the `animate`, `transition`, and `let:motion` props for declarative animation control.

```svelte
<script>
    import { Motion } from 'svelte-motion';
    let i = 0;
</script>

<Motion animate={{ rotate: i }} transition={{ duration: .5 }} let:motion>
    <div use:motion/>
</Motion>
<button on:click={ () => i+=45 }>turn</button>
```

--------------------------------

### Using MotionDiv Component in Svelte

Source: https://svelte-motion.gradientdescent.de/animation

Shows how to import and use the `MotionDiv` component from 'svelte-motion', which serves as a direct equivalent to `motion.div` from framer-motion for animating div elements.

```javascript
import {MotionDiv} from 'svelte-motion'
```

--------------------------------

### Import Motion for SSR

Source: https://svelte-motion.gradientdescent.de/

Directly import the MotionSSR component to ensure compatibility with SvelteKit server-side rendering environments.

```javascript
import Motion from 'svelte-motion/src/motion/MotionSSR.svelte'
```

--------------------------------

### Configure Animation Repetition in Svelte Motion

Source: https://svelte-motion.gradientdescent.de/API/transition

Define how animations repeat, including the number of repetitions and the type of repetition. Options like `repeat`, `repeatType`, and `repeatDelay` allow for looping, reversing, or mirroring animations.

```typescript
interface Repeat {
  repeat?: number;
  repeatType?: "loop" | "reverse" | "mirror";
  repeatDelay?: number;
}
```

--------------------------------

### Layout State Management

Source: https://svelte-motion.gradientdescent.de/API/measure

Interface representing the internal state of an element's layout, including measurements, tree scale, and projection deltas used for visual transformations.

```typescript
interface LayoutState {
	isHydrated: boolean;
	layout: AxisBox2D;
	layoutCorrected: AxisBox2D;
	treeScale: { x: number; y: number };
	delta: { x: AxisDelta; y: AxisDelta };
	deltaFinal: { x: AxisDelta; y: AxisDelta };
	deltaTransform: string;
}
```

--------------------------------

### snapshotViewportBox Function

Source: https://svelte-motion.gradientdescent.de/API/visualelement

Records the viewport box dimensions of a given visual element. This is often used to capture the element's state before a potential mutation or re-render, allowing for accurate animations or layout calculations.

```typescript
declare function snapshotViewportBox(visualElement: VisualElement): void;
```

--------------------------------

### Create Spring Animations with useSpring

Source: https://svelte-motion.gradientdescent.de/API/motionvalue

Initializes a MotionValue that animates to new states using spring physics. It can be used as a standalone value or as a subscriber to another MotionValue.

```typescript
import { useSpring } from "svelte-motion";

const spring = useSpring(0, { stiffness: 100, damping: 10 });
spring.set(50);
```

--------------------------------

### LifecycleManager Interface

Source: https://svelte-motion.gradientdescent.de/API/animation

Provides a set of hooks to listen to animation and layout lifecycle events within a motion component.

```APIDOC
## [INTERFACE] LifecycleManager

### Description
Manages event listeners for various stages of the motion component lifecycle, including layout measurements and animation progress.

### Methods
- **onAnimationStart** (callback: AnimationStartListener) - Registers a callback when the animation begins.
- **onAnimationComplete** (callback: AnimationCompleteListener) - Registers a callback when the animation completes.
- **onUpdate** (callback: UpdateListener) - Registers a callback fired with latest motion values (max once per frame).
- **onLayoutMeasure** (callback: LayoutMeasureListener) - Registers a callback for layout measurement updates.

### Response Example
{
  "onAnimationComplete": "(definition) => { console.log('Animation finished:', definition); }"
}
```

--------------------------------

### Svelte Motion Animation Options Interface

Source: https://svelte-motion.gradientdescent.de/API/animation

Defines the optional parameters that can be passed to control animations. This includes setting delays, overriding transitions, providing custom data, and specifying animation types.

```typescript
interface AnimationOptions {
  delay?: number;
  transitionOverride?: Transition;
  custom?: any;
  type?: AnimationType;
}
```

--------------------------------

### Configure DOM Event Listeners

Source: https://svelte-motion.gradientdescent.de/API/gestures

Defines the properties required to attach a direct event listener to a DOM element, bypassing standard Svelte event systems.

```typescript
interface UseDomEventProps {
  ref: { current: Node } | VisualElement<EventTarget>;
  eventName: string;
  handler?: EventListener;
  options?: AddEventListenerOptions;
}
```

--------------------------------

### Implement Motion with Motion Action Component

Source: https://svelte-motion.gradientdescent.de/motion

The Motion component provides a flexible approach by exposing a 'motion' action via slot props. This allows developers to retain full access to native DOM events, actions, and directives.

```svelte
<script>
    import { Motion } from 'svelte-motion'
</script>

<Motion let:motion><h1 use:motion>A big motion header</h1></Motion>
<Motion let:motion><div use:motion>A big motion header</div></Motion>
<Motion let:motion><button use:motion>A motion button</button></Motion>
```

--------------------------------

### batchLayout Function

Source: https://svelte-motion.gradientdescent.de/API/visualelement

Batches layout-related read and write operations. It accepts a callback function that performs these operations and returns a cleanup function that indicates whether the layout was flushed.

```typescript
declare function batchLayout(callback: ReadWrites): () => boolean;
```

--------------------------------

### VisualElement Interface Definition

Source: https://svelte-motion.gradientdescent.de/API/visualelement

Defines the structure and capabilities of a VisualElement, including properties for tree structure, animation state, layout management, and value handling. It serves as the blueprint for all visual components in the Svelte Motion library.

```typescript
interface VisualElement<Instance = any, RenderState = any> {
  treeType: string;
  depth: number;
  parent?: VisualElement;
  children: Set<VisualElement>;
  variantChildren?: Set<VisualElement>;
  current: Instance | null;
  layoutTree: FlatTree;
  manuallyAnimateOnMount: boolean;
  blockInitialAnimation?: boolean;
  presenceId: number | undefined;
  projection: TargetProjection;
  isProjectionReady: () => boolean;
  isMounted(): boolean;
  mount(instance: Instance): void;
  unmount(): void;
  isStatic?: boolean;
  getInstance(): Instance | null;
  path: VisualElement[];
  sortNodePosition(element: VisualElement): number;
  addVariantChild(child: VisualElement): undefined | (() => void);
  getClosestVariantNode(): VisualElement | undefined;
  setCrossfader(crossfader: Crossfader): void;
  layoutSafeToRemove?: () => void;
  animateMotionValue?: typeof startAnimation;
  /**
   * Visibility
   */
  isVisible?: boolean;
  setVisibility(visibility: boolean): void;
  hasValue(key: string): boolean;
  addValue(key: string, value: MotionValue<any>): void;
  removeValue(key: string): void;
  getValue(key: string): undefined | MotionValue;
  getValue(key: string, defaultValue: string | number): MotionValue;
  getValue(key: string, defaultValue?: string | number): undefined | MotionValue;
  forEachValue(callback: (value: MotionValue, key: string) => void): void;
  readValue(key: string): string | number | undefined | null;
  setBaseTarget(key: string, value: string | number | null): void;
  getBaseTarget(key: string): number | string | undefined | null;
  getStaticValue(key: string): number | string | undefined;
  setStaticValue(key: string, value: number | string): void;
  getLatestValues(): ResolvedValues;
  scheduleRender(): void;
  setProps(props: MotionProps): void;
  getProps(): MotionProps;
  getVariant(name: string): Variant | undefined;
  getDefaultTransition(): Transition | undefined;
  getVariantContext(startAtParent?: boolean): undefined | {
    initial?: string | string[];
    animate?: string | string[];
    exit?: string | string[];
    whileHover?: string | string[];
    whileDrag?: string | string[];
    whileFocus?: string | string[];
    whileTap?: string | string[];
  };
  build(): RenderState;
  syncRender(): void;
  enableLayoutProjection(): void;
  lockProjectionTarget(): void;
  unlockProjectionTarget(): void;
  rebaseProjectionTarget(force?: boolean, sourceBox?: AxisBox2D): void;
  measureViewportBox(withTransform?: boolean): AxisBox2D;
  getLayoutState: () => LayoutState;
  getProjectionParent: () => VisualElement | false;
  getProjectionAnimationProgress(): MotionPoint;
  setProjectionTargetAxis(axis: "x" | "y", min: number, max: number, isRelative?: boolean): void;
  startLayoutAnimation(axis: "x" | "y", transition: Transition, isRelative: boolean): Promise<any>;
  stopLayoutAnimation(): void;
  updateLayoutProjection(): void;
  updateTreeLayoutProjection(): void;
  resolveRelativeTargetBox(): void;
  makeTargetAnimatable(target: TargetAndTransition, isLive?: boolean): TargetAndTransition;
  scheduleUpdateLayoutProjection(): void;
  notifyLayoutReady(config?: SharedLayoutAnimationConfig): void;
  pointTo(element: VisualElement): void;
  resetTransform(): void;
  restoreTransform(): void;
  shouldResetTransform(): boolean;
  isPresent: boolean;
  presence: Presence;
  isPresenceRoot?: boolean;
  prevDragCursor?: Point2D;
  prevViewportBox?: AxisBox2D;
  getLayoutId(): string | undefined;
  animationState?: AnimationState;
}

```

--------------------------------

### visualElement Factory Function

Source: https://svelte-motion.gradientdescent.de/API/visualelement

A factory function that creates a VisualElement instance. It takes a VisualElementConfig and returns a function that, when called with VisualElementOptions, produces a VisualElement. This allows for flexible configuration and instantiation of visual elements.

```typescript
declare function visualElement <Instance, MutableState, Options>(config: VisualElementConfig<Instance, MutableState, Options>) => (visualElementOptions: VisualElementOptions<Instance, any>, options?: Options) => VisualElement<Instance, any>;
```

--------------------------------

### VisualState Interface

Source: https://svelte-motion.gradientdescent.de/API/visualelement

Represents the state of a VisualElement, including its render state, latest animated values, and an optional mount function. This interface is generic and can be adapted to different rendering contexts.

```typescript
interface VisualState <Instance, RenderState> {
  renderState: RenderState;
  latestValues: ResolvedValues;
  mount?: (instance: Instance) => void;
}
```

--------------------------------

### AnimationProps Interface

Source: https://svelte-motion.gradientdescent.de/API/animation

Defines the core properties used to control animations, variants, and transitions on motion components.

```APIDOC
## [INTERFACE] AnimationProps

### Description
Defines the configuration properties for motion components to manage animations, exit states, and variant-based orchestration.

### Parameters
#### Request Body
- **animate** (AnimationControls | TargetAndTransition | VariantLabels | boolean) - Optional - Values to animate to, variant label(s), or AnimationControls.
- **exit** (TargetAndTransition | VariantLabels) - Optional - Target to animate to when the component is removed from the tree. Requires AnimatePresence.
- **variants** (Variants) - Optional - Defines animation states organized by name for orchestration.
- **transition** (Transition) - Optional - Default transition configuration used if none is defined in animate.

### Request Example
{
  "animate": { "opacity": 1 },
  "variants": { "visible": { "opacity": 1 }, "hidden": { "opacity": 0 } },
  "transition": { "duration": 0.3 }
}
```

--------------------------------

### Svelte Motion Visual Element Lifecycles Interface

Source: https://svelte-motion.gradientdescent.de/API/animation

Defines callback functions for key lifecycle events related to visual elements in Svelte Motion. This includes updates to viewport bounding boxes, layout measurements, and animation start/completion.

```typescript
interface VisualElementLifecycles {
  onViewportBoxUpdate: (box: AxisBox2D, delta: BoxDelta) => void;
  onBeforeLayoutMeasure: (box: AxisBox2D) => void;
  onLayoutMeasure: (box: AxisBox2D, prevBox: AxisBox2D) => void;
  onUpdate: (latest: ResolvedValues) => void;
  onAnimationStart: () => void;
  onAnimationComplete: (definition: AnimationDefinition) => void;
}
```

--------------------------------

### useVelocity

Source: https://svelte-motion.gradientdescent.de/API/motionvalue

Creates a MotionValue that tracks and updates based on the velocity of a provided MotionValue.

```APIDOC
## useVelocity

### Description
Creates a MotionValue that updates when the velocity of the provided MotionValue changes.

### Parameters
- **value** (MotionValue<number>) - Required - The source MotionValue to track.

### Methods
- **reset** (value: MotionValue<number>) - Updates the props of the velocity motion value.

### Response
- **MotionValue<number>** - A MotionValue representing the current velocity.
```

--------------------------------

### VisualElementOptions Interface

Source: https://svelte-motion.gradientdescent.de/API/visualelement

Defines the options object passed to a VisualElement during its creation or update. It includes the visual state, parent and variant parent elements, snapshot values, presence ID, motion props, and a flag to block initial animations.

```typescript
interface VisualElementOptions <Instance, RenderState = any> {
  visualState: VisualState<Instance, RenderState>;
  parent?: VisualElement<unknown>;
  variantParent?: VisualElement<unknown>;
  snapshot?: ResolvedValues;
  presenceId?: number | undefined;
  props: MotionProps;
  blockInitialAnimation?: boolean;
}
```

--------------------------------

### Detect User Preference for Reduced Motion with useReducedMotion

Source: https://svelte-motion.gradientdescent.de/utilities

The `useReducedMotion` hook returns a store containing a boolean value. This value indicates whether the user has system-level preferences set to reduce motion, allowing for adaptive animations.

```javascript
import { useReducedMotion } from 'svelte-motion';

const shouldReduceMotion = useReducedMotion();

// Use the store's value to conditionally apply animations:
$: slideOutX = $shouldReduceMotion ? '0' : '-100%';

```

--------------------------------

### WithDepth Interface

Source: https://svelte-motion.gradientdescent.de/API/visualelement

A simple interface representing an object with a depth property, likely used for hierarchical ordering or processing.

```typescript
interface WithDepth {
  depth: number;
}
```

--------------------------------

### Define Tap Gesture Handlers

Source: https://svelte-motion.gradientdescent.de/API/gestures

Defines the interface for tap gesture callbacks and the whileTap animation state. Used to manage interactive press states on components.

```typescript
interface TapHandlers {
  onTap?: (event: MouseEvent | TouchEvent | PointerEvent, info: TapInfo) => void;
  onTapStart?: (event: MouseEvent | TouchEvent | PointerEvent, info: TapInfo) => void;
  onTapCancel?: (event: MouseEvent | TouchEvent | PointerEvent, info: TapInfo) => void;
  whileTap?: VariantLabels | TargetAndTransition;
}
```

--------------------------------

### Manage Hierarchical Elements with FlatTree

Source: https://svelte-motion.gradientdescent.de/API/visualelement

The FlatTree class provides a mechanism to manage nested visual elements. It includes methods to add or remove children and iterate through the tree structure using a callback function.

```typescript
class FlatTree {
  add: (child: WithDepth) => void;
  remove: (child: WithDepth) => void;
  forEach: (callback: (child: WithDepth) => void) => void;
}
```

--------------------------------

### Animate on Focus

Source: https://svelte-motion.gradientdescent.de/gestures

The whileFocus prop allows for animations when an input or focusable element receives focus. This is useful for highlighting active form fields.

```svelte
<Motion whileFocus={{ scale: 1.5 }} let:motion>
    <input value="text input" use:motion type="text"/>
</Motion>
```

--------------------------------

### Svelte Motion Animation Props Interface

Source: https://svelte-motion.gradientdescent.de/API/animation

Defines the core properties used to control animations on Svelte Motion components. These include 'animate' for target values, 'exit' for animations when components are removed, 'variants' for named animation states, and 'transition' for default animation settings.

```typescript
interface AnimationProps {
  animate: AnimationControls | TargetAndTransition | VariantLabels | boolean;
  exit: TargetAndTransition | VariantLabels;
  variants: Variants;
  transition: Transition;
}
```

--------------------------------

### Svelte Motion Animation Playback Controls

Source: https://svelte-motion.gradientdescent.de/API/animation

Provides a simple interface for controlling the playback of animations. The primary method available is 'stop', which immediately halts any ongoing animation.

```typescript
interface AnimationPlaybackControls {
  stop: () => void;
}
```

--------------------------------

### Svelte Motion Animation State Management

Source: https://svelte-motion.gradientdescent.de/API/animation

An interface for managing the state of animations, including animating changes, setting active states, and retrieving animation details. It allows for fine-grained control over the animation lifecycle.

```typescript
interface AnimationState {
  animateChanges: (options?: AnimationOptions, type?: AnimationType) => Promise<any>;
  setActive: (type: AnimationType, isActive: boolean, options?: AnimationOptions) => Promise<any>;
  setAnimateFunction: (fn: any) => void;
  isAnimated(key: string): boolean;
  getState: () => {
    [key: string]: AnimationTypeState;
  };
}
```

--------------------------------

### Motion Transform Properties

Source: https://svelte-motion.gradientdescent.de/API/motion

Definition of transform-related properties available for motion animations.

```APIDOC
## [INTERFACE] MotionTransform

### Description
Defines the set of transform properties that can be animated, including position, rotation, scale, and skew.

### Properties
- **x, y, z** (string | number | MotionValue) - Position coordinates.
- **rotate, rotateX, rotateY, rotateZ** (string | number | MotionValue) - Rotation values.
- **scale, scaleX, scaleY, scaleZ** (string | number | MotionValue) - Scaling factors.
- **skew, skewX, skewY, skewZ** (string | number | MotionValue) - Skew values.
- **perspective** (string | number | MotionValue) - Perspective depth.
```

--------------------------------

### Define Axis and Bounding Box Structures

Source: https://svelte-motion.gradientdescent.de/API/measure

Core interfaces for representing spatial data in Svelte Motion. These structures allow for generic axis-based calculations and 2D bounding box transformations.

```typescript
type Axis = { min: number; max: number };

type AxisBox2D = { x: Axis; y: Axis };

interface AxisDelta {
	translate: number;
	scale: number;
	origin: number;
	originPoint: number;
}

interface BoundingBox2D {
	top: number;
	left: number;
	bottom: number;
	right: number;
}
```

--------------------------------

### Inertia Transition

Source: https://svelte-motion.gradientdescent.de/API/transition

An animation that decelerates a value based on its initial velocity, often used for inertial scrolling. It supports min/max boundaries with spring-like behavior and target modification.

```APIDOC
## Inertia Transition

### Description
An animation that decelerates a value based on its initial velocity, usually used to implement inertial scrolling. Optionally, `min` and `max` boundaries can be defined, and inertia will snap to these with a spring animation.

### Method
N/A (Configuration Object)

### Endpoint
N/A (Configuration Object)

### Parameters
#### Options
- **type** (string) - Optional - Set to `"inertia"` to use inertia animation. Defaults to `"tween"`.
- **modifyTarget** ((v: number) => number) - Optional - A function that receives the automatically-calculated target and returns a new one. Useful for snapping the target to a grid.
- **bounceStiffness** (number) - Optional - If `min` or `max` is set, this affects the stiffness of the bounce spring. Defaults to `500`.
- **bounceDamping** (number) - Optional - If `min` or `max` is set, this affects the damping of the bounce spring. Defaults to `10`.
- **power** (number) - Optional - A higher power value equals a further target. Defaults to `0.8`.
- **timeConstant** (number) - Optional - Adjusting the time constant will change the duration of the deceleration. Defaults to `700`.
- **restDelta** (number) - Optional - End the animation if the distance to the animation target is below this value, and the absolute speed is below `restSpeed`. Defaults to `0.01`.
- **min** (number) - Optional - Minimum constraint. If set, the value will "bump" against this value.
- **max** (number) - Optional - Maximum constraint. If set, the value will "bump" against this value.
- **from** (number | string) - Optional - The value to animate from. Defaults to the current state of the animating value.
- **velocity** (number) - Optional - The initial velocity of the animation. Defaults to the current velocity of the component.

### Request Example
```json
{
  "type": "inertia",
  "modifyTarget": "(v) => Math.round(v / 10) * 10",
  "min": 0,
  "max": 500
}
```

### Response
#### Success Response (N/A - Configuration Object)
This is a configuration object for an animation, not a typical API response.

#### Response Example
N/A
```

--------------------------------

### useViewportScroll

Source: https://svelte-motion.gradientdescent.de/API/motionvalue

Returns MotionValues that update in response to viewport scroll events.

```APIDOC
## useViewportScroll

### Description
Returns MotionValues that update when the viewport scrolls. Note: Avoid setting body or html to height: 100% as it interferes with progress measurement.

### Parameters
- **ref** ({current?: Node}) - Optional - A reference to the scrollable element.

### Response
- **ScrollMotionValues** - An object containing MotionValues for scroll progress and position.
```

--------------------------------

### Subscribe to MotionValue changes

Source: https://svelte-motion.gradientdescent.de/API/motionvalue

Demonstrates how to subscribe to a MotionValue to react to state updates. The subscribe method returns an unsubscriber function to prevent memory leaks.

```typescript
const unsubscribe = motionValue.onChange((v) => {
  console.log("Value changed to:", v);
});

// Call when component is destroyed
unsubscribe();
```

--------------------------------

### Cycle through values with useCycle

Source: https://svelte-motion.gradientdescent.de/API/utils

The useCycle hook creates a custom Svelte store that cycles through a provided array of items. It provides a next method to advance the state, useful for toggling animations or states.

```typescript
const [x, cycleX] = useCycle(0, 100, 200);

// Cycle to next value
cycleX();

// Cycle to specific index
cycleX(0);
```

--------------------------------

### Combine Motion Values with useMotionTemplate

Source: https://svelte-motion.gradientdescent.de/motionvalue

Combines multiple motion values into a single string template using `useMotionTemplate`. This is useful for creating complex style properties like CSS `drop-shadow` that depend on the positions of multiple motion values.

```javascript
import { Motion, useMotionValue, useMotionTemplate } from "svelte-motion";

const x = useMotionValue(0);
const y = useMotionValue(0);
const shadow = useMotionTemplate`drop-shadow(${x}px ${y}px 20px rgba(0,0,0,0.8))`
```