在下面的示例中，我不确定style变量应该是什么类型：

export const getPaddingOrMarginStyle = (arrValue: number[], key: string) => {
// The key can only contain "margin" and "padding"

  const style = {}; // <--------------- what is type??

  if (arrValue.length === 4) {
    style.key = `${arrValue[0]}px ${arrValue[1]}px ${arrValue[2]}px ${arrValue[3]}px`;
  }
  if (arrValue.length === 2) {
    style[key] = `${arrValue[0]}px ${arrValue[1]}px`;
  }

  if (arrValue.length === 1) {
    style[key] = `${arrValue}px`;
  }

  if (arrValue.length === 1 && key === 'margin') {
    if (arrValue[0] === 0) {
      style.margin = `${arrValue}px auto`;
    } else {
      style.margin = `${arrValue}px`;
    }
  }

  return style;  // i want result style { margin: '10px 10px 10px 10px'} or { padding: '10px 10px 10px 10px'}
};