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/* eslint-disable @typescript-eslint/no-unused-vars */
import {
CSSProperties,
ForwardRefExoticComponent,
ElementType,
ComponentPropsWithRef,
} from 'react'
import { FluidValue, FluidProps } from '@react-spring/shared'
import { Merge } from '@react-spring/types'
import { Primitives } from './primitives'
import type * as CSS from 'csstype'
export type { CSS }
type AnimatedPrimitives = {
[Tag in Primitives]: AnimatedComponent<Tag>
}
/** The type of the `animated()` function */
export type WithAnimated = {
<T extends ElementType>(wrappedComponent: T): AnimatedComponent<T>
} & AnimatedPrimitives
/** The type of an `animated()` component */
export type AnimatedComponent<T extends ElementType> =
ForwardRefExoticComponent<
AnimatedProps<Merge<ComponentPropsWithRef<T>, { style?: StyleProps }>> &
FluidProps<{
scrollTop?: number
scrollLeft?: number
viewBox?: string
}>
>
/** The props of an `animated()` component */
export type AnimatedProps<Props extends object> = {
[P in keyof Props]: P extends 'ref' | 'key'
? Props[P]
: AnimatedProp<Props[P]>
}
type StyleProps = Merge<CSSProperties, TransformProps>
type StylePropKeys = keyof StyleProps
type ValidStyleProps<T extends object> = {
[P in keyof T & StylePropKeys]: T[P] extends StyleProps[P] ? P : never
}[keyof T & StylePropKeys]
// The animated prop value of a React element
type AnimatedProp<T> = [T, T] extends [infer T, infer DT]
? [DT] extends [never]
? never
: DT extends void
? undefined
: DT extends string | number
? DT | AnimatedLeaf<T>
: DT extends object
? [ValidStyleProps<DT>] extends [never]
? DT extends ReadonlyArray<any>
? AnimatedStyles<DT>
: DT
: AnimatedStyle<T>
: DT | AnimatedLeaf<T>
: never
// An animated array of style objects
type AnimatedStyles<T extends ReadonlyArray<any>> = {
[P in keyof T]: [T[P]] extends [infer DT]
? DT extends object
? [ValidStyleProps<DT>] extends [never]
? DT extends ReadonlyArray<any>
? AnimatedStyles<DT>
: DT
: { [P in keyof DT]: AnimatedProp<DT[P]> }
: DT
: never
}
// An animated object of style attributes
type AnimatedStyle<T> = [T, T] extends [infer T, infer DT]
? DT extends void
? undefined
: [DT] extends [never]
? never
: DT extends string | number
? DT | AnimatedLeaf<T>
: DT extends object
? AnimatedObject<DT>
: DT | AnimatedLeaf<T>
: never
type AnimatedObject<T extends object> =
| { [P in keyof T]: AnimatedStyle<T[P]> }
| (T extends ReadonlyArray<number | string> ? FluidValue<Readonly<T>> : never)
// An animated primitive (or an array of them)
type AnimatedLeaf<T> =
NonObject<T> extends infer U
? [U] extends [never]
? never
: FluidValue<U>
: never
type NonObject<T> =
| Extract<T, string | number | ReadonlyArray<string | number>>
| Exclude<T, object | void>
type Angle = number | string
type Length = number | string
type TransformProps = {
transform?: string
x?: Length
y?: Length
z?: Length
translate?: Length | readonly [Length, Length]
translateX?: Length
translateY?: Length
translateZ?: Length
translate3d?: readonly [Length, Length, Length]
rotate?: Angle
rotateX?: Angle
rotateY?: Angle
rotateZ?: Angle
rotate3d?: readonly [number, number, number, Angle]
// Note: "string" is not really supported by "scale", but this lets us
// spread React.CSSProperties into an animated style object.
scale?: number | readonly [number, number] | string
scaleX?: number
scaleY?: number
scaleZ?: number
scale3d?: readonly [number, number, number]
skew?: Angle | readonly [Angle, Angle]
skewX?: Angle
skewY?: Angle
matrix?: readonly [number, number, number, number, number, number]
matrix3d?: readonly [
number, // a1
number,
number,
number,
number, // a2
number,
number,
number,
number, // a3
number,
number,
number,
number, // a4
number,
number,
number,
]
}
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