refactor ifs with table driven method

// many ifs
function performActions(actionName: string) {
  if (actionName === "save") {
    // save...
  } else if (actionName === "update") {
    // update ...
  } else if (actionName === "delete") {
    // delete...
  }
}

// refactor with table driven methods
const funcs: Record<string, () => void> = {
  save: () => {
    // save ...
  },
  update: () => {
    // update ...
  },
  delete: () => {
    //delete ...
  }
};

function performActions2(actionName: string) {
  const action = funcs[actionName];
  if (action) {
    action();
  }
}