react-native - 如何在打开使用 react-native fs 编写的文档时修复错误“无法打开文档，文件似乎已损坏”？

Question

我正在尝试使用将数据写入文档文件react-native-fs，然后使用react-native-mail包将该文档邮寄给另一个用户。

我已经成功地实现了这一点，除了一件事。当我尝试打开文档时，它显示“无法打开文档，文件似乎已损坏”。但是当我尝试以 txt 格式发送此文件时，我可以打开文件并查看其内容。为什么在 doc 格式的情况下我无法重现相同的内容。下面是我的代码。

if (
        permRes["android.permission.READ_EXTERNAL_STORAGE"] ===
          PermissionsAndroid.RESULTS.GRANTED &&
        permRes["android.permission.WRITE_EXTERNAL_STORAGE"] ===
          PermissionsAndroid.RESULTS.GRANTED
      ) {
        if (data !== null) {
          data.map(item => {
            var path = RNFS.ExternalStorageDirectoryPath + "/test.doc";
            console.log("pathpath", path);
            RNFS.writeFile(
              path,
              "Project Details\n" +
                "\nProject name: " +
                item.project_name +
                "\nProject Description: " +
                item.project_description +
                "\nClient name: " +
                item.client_name +
                "\nCompany: " +
                item.company +
                "\nPhone number: " +
                item.phone_number +
                "\nEmail: " +
                item.email,
              "utf8"
            )
              .then(success => {
                console.log("FILE WRITTEN");
                Mailer.mail(
                  {
                    subject:
                      Strings.string_rem + " :" + Strings.string_projectDetails,
                    recipients: ["vinaynarayankutty@gmail.com"],
                    body: "<b>This is a test document</b>",
                    isHTML: true,
                    attachment: {
                      path: RNFS.ExternalStorageDirectoryPath + "/test.doc",
                      type: "doc",
                      name: "Project details"
                    }
                  },
                  (error, event) => {
                    Alert.alert(
                      error,
                      event,
                      [
                        {
                          text: "Ok",
                          onPress: () => console.log("OK: Email Error Response")
                        },
                        {
                          text: "Cancel",
                          onPress: () =>
                            console.log("CANCEL: Email Error Response")
                        }
                      ],
                      { cancelable: true }
                    );
                  }
                );
              })
              .catch(err => {
                console.log(err.message);
                alert(err.message);
              });
          });
        }
      }