https://github.com/wechat-miniprogram/computed/issues/65 https://github.com/wechat-miniprogram/computed/blob/1199d6ac1d269d45b204fcb9c58cbf1376e437f3/package.json#L67 现在官方文档用的是 https://github.com/wechat-miniprogram/api-typings
