javascript - Firebase 部署在 Node js 上

Question

我使用 node.js 为我使用 firebase 的 android 聊天应用程序项目创建推送通知。当我在通知功能上部署我的 firebase 时，出现了一些错误。

这是我的 index.js在 38:11 和 39:16

    const deviceToken = admin.database().ref(`/Users/${receiver_id}/device_token`).once('value');


                return deviceToken.then(response => 
                {
                const token_id = result.val();
                const payload = 
                {
                                notification:
                                {
                                title: "Friend Request",
                                body: "you have received a new friend request",
                                icon:"default"
                                }
                };

  38.           return admin.messaging().sendToDevice(token_id, payload)
  39.                               .then(response => 
                                        {
                                            console.log('This was the notification feature.');
                                        });
                });

这是我的错误

Running command: npm --prefix %RESOURCE_DIR% run lint

> functions@ lint C:\Users\Iax\Desktop\NotificationFunction\functions
> eslint .


C:\Users\Iax\Desktop\NotificationFunction\functions\index.js
  38:11  warning  Avoid nesting promises                      promise/no-nesting
  39:16  error    Each then() should return a value or throw  promise/always-return

✖ 2 problems (1 error, 1 warning)

npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! functions@ lint: `eslint .`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the functions@ lint script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     C:\Users\Iax\AppData\Roaming\npm-cache\_logs\2018-01-21T16_30_37_019Z-debug.log

Error: functions predeploy error: Command terminated with non-zero exit code1

Having trouble? Try firebase deploy --help

谁能帮帮我？

Answer 1

失败是因为您的代码存在一些样式问题，而 ESLint 正在显示它。ESLint 根据其配置检查代码样式，如果有错误，它会以非零值退出，导致部署因错误而停止。

你有两种方法来解决这个问题:

• 修复代码样式问题；
• 更改 ESLint 配置以忽略它。

至于你的代码，它可以这样重写(虽然我没有测试它，但它应该工作相同):

const deviceToken = admin.database().ref(`/Users/${receiver_id}/device_token`).once('value');

return deviceToken.then(response => {
    const token_id = result.val();
    const payload = {
        notification:
        {
            title: "Friend Request",
            body: "you have received a new friend request",
            icon:"default"
        }
    };

    return admin.messaging().sendToDevice(token_id, payload);
}.then(response => {
    console.log('This was the notification feature.');
    return true;
});