react-native-reanimated
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More powerful alternative to Animated library for React Native.
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TypeScript
import type { AnimatableValue, AnimationObject, Animation, ReduceMotion, Timestamp, RequiredKeys } from '../../../reanimated2/commonTypes';
export declare const VELOCITY_EPS: number;
export declare const SLOPE_FACTOR = 0.1;
export interface DecayAnimation extends Animation<DecayAnimation> {
lastTimestamp: Timestamp;
startTimestamp: Timestamp;
initialVelocity: number;
velocity: number;
current: AnimatableValue;
}
export interface InnerDecayAnimation extends Omit<DecayAnimation, 'current'>, AnimationObject {
current: number;
springActive?: boolean;
}
export type DecayConfig = {
deceleration?: number;
velocityFactor?: number;
velocity?: number;
reduceMotion?: ReduceMotion;
} & ({
rubberBandEffect?: false;
clamp?: [min: number, max: number];
} | {
rubberBandEffect: true;
clamp: [min: number, max: number];
rubberBandFactor?: number;
});
export type DefaultDecayConfig = RequiredKeys<DecayConfig, 'deceleration' | 'velocityFactor' | 'velocity'> & {
rubberBandFactor: number;
};
export type RubberBandDecayConfig = RequiredKeys<DefaultDecayConfig, 'clamp'> & {
rubberBandEffect: true;
};
export declare function isValidRubberBandConfig(config: DefaultDecayConfig): config is RubberBandDecayConfig;