expo-dev-menu/vendored/react-native-reanimated/src/reanimated2/layoutReanimation/animationBuilder/BaseBounceAnimationBuilder.ts

Expo/React Native module with the developer menu.

import { withDelay, withTiming } from '../../animation';
import {
  EntryExitAnimationFunction,
  AnimationFunction,
  LayoutAnimationAndConfig,
  BounceBuilderAnimationConfig,
  EntryExitAnimationBuild,
} from './commonTypes';

export class BaseBounceAnimationBuilder {
  durationV?: number;
  delayV?: number;
  callbackV?: (finished: boolean) => void;

  static createInstance: () => BaseBounceAnimationBuilder;
  build: EntryExitAnimationBuild = () => {
    throw Error('Unimplemented method in child class.');
  };

  static duration(durationMs: number): BaseBounceAnimationBuilder {
    const instance = this.createInstance();
    return instance.duration(durationMs);
  }

  duration(durationMs: number): BaseBounceAnimationBuilder {
    this.durationV = durationMs;
    return this;
  }

  static delay(delayMs: number): BaseBounceAnimationBuilder {
    const instance = this.createInstance();
    return instance.delay(delayMs);
  }

  delay(delayMs: number): BaseBounceAnimationBuilder {
    this.delayV = delayMs;
    return this;
  }

  static withCallback(
    callback: (finished: boolean) => void
  ): BaseBounceAnimationBuilder {
    const instance = this.createInstance();
    return instance.withCallback(callback);
  }

  withCallback(
    callback: (finsihed: boolean) => void
  ): BaseBounceAnimationBuilder {
    this.callbackV = callback;
    return this;
  }

  getDelayFunction(): AnimationFunction {
    const delay = this.delayV;
    return delay
      ? withDelay
      : (_, animation) => {
          'worklet';
          return animation;
        };
  }

  getAnimationAndConfig(): LayoutAnimationAndConfig {
    const duration = this.durationV;
    const type = withTiming;
    const animation = type;

    const config: BounceBuilderAnimationConfig = {};

    if (duration) {
      config.duration = duration;
    }

    return [animation, config];
  }

  static build(): EntryExitAnimationFunction {
    const instance = this.createInstance();
    return instance.build();
  }
}