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import { FluidValue, deprecateInterpolate } from '@react-spring/shared'
import {
Constrain,
OneOrMore,
Animatable,
ExtrapolateType,
InterpolatorConfig,
InterpolatorFn,
} from '@react-spring/types'
import { Interpolation } from './Interpolation'
/** Map the value of one or more dependencies */
export const to: Interpolator = (source: any, ...args: [any]) =>
new Interpolation(source, args)
/** @deprecated Use the `to` export instead */
export const interpolate: Interpolator = (source: any, ...args: [any]) => (
deprecateInterpolate(), new Interpolation(source, args)
)
/** Extract the raw value types that are being interpolated */
export type Interpolated<T extends ReadonlyArray<any>> = {
[P in keyof T]: T[P] extends infer Element
? Element extends FluidValue<infer U>
? U
: Element
: never
}
/**
* This interpolates one or more `FluidValue` objects.
* The exported `interpolate` function uses this type.
*/
export interface Interpolator {
// Tuple of parent values
<Input extends ReadonlyArray<any>, Output>(
parents: Input,
interpolator: (...args: Interpolated<Input>) => Output
): Interpolation<Output>
// Single parent value
<Input, Output>(
parent: FluidValue<Input> | Input,
interpolator: InterpolatorFn<Input, Output>
): Interpolation<Output>
// Interpolation config
<Out>(
parents: OneOrMore<FluidValue>,
config: InterpolatorConfig<Out>
): Interpolation<Animatable<Out>>
// Range shortcuts
<Out>(
parents: OneOrMore<FluidValue<number>> | FluidValue<number[]>,
range: readonly number[],
output: readonly Constrain<Out, Animatable>[],
extrapolate?: ExtrapolateType
): Interpolation<Animatable<Out>>
}
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