pokerogue/src/phases/shiny-sparkle-phase.ts

import BattleScene from "#app/battle-scene";
import { BattlerIndex } from "#app/battle";
import { PokemonPhase } from "./pokemon-phase";

export class ShinySparklePhase extends PokemonPhase {
  constructor(scene: BattleScene, battlerIndex: BattlerIndex) {
    super(scene, battlerIndex);
  }

  start() {
    super.start();

    this.getPokemon().sparkle();
    this.scene.time.delayedCall(1000, () => this.end());
  }
}