foundry/Data/modules/token-variants/scripts/hooks/effectIconHooks.js

import { FEATURE_CONTROL, TVA_CONFIG } from '../settings.js';
import { registerHook, unregisterHook } from './hooks.js';

const feature_id = 'EffectIcons';

export function registerEffectIconHooks() {
  // OnHover settings specific hooks
  if (FEATURE_CONTROL[feature_id] && TVA_CONFIG.displayEffectIconsOnHover) {
    registerHook(feature_id, 'hoverToken', (token, hoverIn) => {
      if (token.effects) {
        token.effects.visible = hoverIn;
      }
    });
  } else {
    unregisterHook(feature_id, 'hoverToken');
  }

  if (FEATURE_CONTROL[feature_id] && TVA_CONFIG.displayEffectIconsOnHover) {
    registerHook(feature_id, 'highlightObjects', (active) => {
      if (canvas.tokens.active) {
        for (const tkn of canvas.tokens.placeables) {
          if (tkn.effects) {
            tkn.effects.visible = active || tkn.hover;
          }
        }
      }
    });
  } else {
    unregisterHook(feature_id, 'highlightObjects');
  }
}