init.js

const CTS_MODULE_NAME = 'cycle-token-stack';

function modifySettings() {
  if (_CycleTokenStack) {
    _CycleTokenStack.minClickDelay = game.settings.get(CTS_MODULE_NAME, 'minClickDelay');
    _CycleTokenStack.keyCycleForward = game.settings.get(CTS_MODULE_NAME, 'keyCycleForward');
    _CycleTokenStack.keyCycleBackward = game.settings.get(CTS_MODULE_NAME, 'keyCycleBackward');
  }
}

Hooks.once("init", () => {
  game.settings.register(CTS_MODULE_NAME, 'minClickDelay', {
    name: game.i18n.localize('BBCTS.minClickDelay.title'),
    hint: game.i18n.localize('BBCTS.minClickDelay.hint'),
    scope: 'client',
    config: true,
    default: 300,
    onChange: modifySettings,
    type: Number
  });
  game.settings.register(CTS_MODULE_NAME, 'keyCycleForward', {
    name: game.i18n.localize('BBCTS.keyCycleForward.title'),
    hint: game.i18n.localize('BBCTS.keyCycleForward.hint'),
    scope: 'client',
    config: true,
    default: '[',
    onChange: modifySettings,
    type: String
  });
  game.settings.register(CTS_MODULE_NAME, 'keyCycleBackward', {
    name: game.i18n.localize('BBCTS.keyCycleBackward.title'),
    hint: game.i18n.localize('BBCTS.keyCycleBackward.hint'),
    scope: 'client',
    config: true,
    default: ']',
    onChange: modifySettings,
    type: String
  });

  modifySettings();
});