可能的未处理承诺拒绝（id：0）：ReferenceError：找不到变量：错误

Question

我的获取请求工作正常并返回数据，但我可能会收到未处理的承诺拒绝警告。我在请求末尾添加了 catch 并且 catch 函数确实返回了一些数据，但是警告似乎并没有消失。它还说引用错误并且找不到变量错误，我不明白它指的是哪个变量。我查看了资源，发现通常未处理的 Promise 拒绝是因为没有捕获或捕获不返回任何内容，但我的 fetch 请求同时具有它们。

这是我的获取请求：

fetch(this.request)
    .then(response => response.json() )
    .then(response => {

        if(response.token === null){
            return {
                status:false,
                message:"Incorrect login credentials",
                token:response.token
            }
        }

        return {
            status:true,
            message:"Login successful"
        }
    },
    reject => ({
        status:false,
        message:"Something is wrong with the server in reject",
        reject:reject
    }))
    .catch(networkError => ({
        status:false,
        message:"Something is wrong with the server in catch",
        networkError
    }))

这是错误日志：

Possible Unhandled Promise Rejection (id: 0):
ReferenceError: Can't find variable: error
_callee$@http://192.168.2.102:19001/./node_modules/react-native-
scripts/build/bin/crna-entry.bundle?
platform=android&dev=true&hot=false&minify=false:87622:38
tryCatch@http://192.168.2.102:19001/./node_modules/react-native-
scripts/build/bin/crna-entry.bundle?
platform=android&dev=true&hot=false&minify=false:13836:44
invoke@http://192.168.2.102:19001/./node_modules/react-native-
scripts/build/bin/crna-entry.bundle?
platform=android&dev=true&hot=false&minify=false:14024:30
http://192.168.2.102:19001/./node_modules/react-native-scripts/build/bin/crna-
entry.bundle?platform=android&dev=true&hot=false&minify=false:13861:28
tryCatch@http://192.168.2.102:19001/./node_modules/react-native-
scripts/build/bin/crna-entry.bundle?
platform=android&dev=true&hot=false&minify=false:13836:44
invoke@http://192.168.2.102:19001/./node_modules/react-native-
scripts/build/bin/crna-entry.bundle?
platform=android&dev=true&hot=false&minify=false:13894:28
http://192.168.2.102:19001/./node_modules/react-native-scripts/build/bin/crna-
entry.bundle?platform=android&dev=true&hot=false&minify=false:13902:19
tryCallOne@http://192.168.2.102:19001/./node_modules/react-native-
scripts/build/bin/crna-entry.bundle?
platform=android&dev=true&hot=false&minify=false:15825:14
http://192.168.2.102:19001/./node_modules/react-native-scripts/build/bin/crna-
entry.bundle?platform=android&dev=true&hot=false&minify=false:15911:25
http://192.168.2.102:19001/./node_modules/react-native-scripts/build/bin/crna-
entry.bundle?platform=android&dev=true&hot=false&minify=false:6735:24
_callTimer@http://192.168.2.102:19001/./node_modules/react-native-
scripts/build/bin/crna-entry.bundle?
platform=android&dev=true&hot=false&minify=false:6649:15
callImmediatesPass@http://192.168.2.102:19001/./node_modules/react-native-
scripts/build/bin/crna-entry.bundle?
platform=android&dev=true&hot=false&minify=false:6877:19
callImmediates@http://192.168.2.102:19001/./node_modules/react-native-
scripts/build/bin/crna-entry.bundle?
platform=android&dev=true&hot=false&minify=false:6888:39
__callImmediates@http://192.168.2.102:19001/./node_modules/react-native-
scripts/build/bin/crna-entry.bundle?
platform=android&dev=true&hot=false&minify=false:6248:30
http://192.168.2.102:19001/./node_modules/react-native-scripts/build/bin/crna-
entry.bundle?platform=android&dev=true&hot=false&minify=false:6134:32
__guard@http://192.168.2.102:19001/./node_modules/react-native-
scripts/build/bin/crna-entry.bundle?
platform=android&dev=true&hot=false&minify=false:6234:11
flushedQueue@http://192.168.2.102:19001/./node_modules/react-native-
scripts/build/bin/crna-entry.bundle?
platform=android&dev=true&hot=false&minify=false:6133:19
flushedQueue@[native code]
callFunctionReturnFlushedQueue@http://192.168.2.102:19001/./node_modules/react 
-native-scripts/build/bin/crna-entry.bundle?
platform=android&dev=true&hot=false&minify=false:6103:31
callFunctionReturnFlushedQueue@[native code]

Answer 1

fetch(this.request)
    .then(response => response.json() )
    .then(response => {

        if(response.token === null){
            return( {
                status:false,
                message:"Incorrect login credentials",
                token:response.token
            });
        }

        return( {
            status:true,
            message:"Login successful"
        });
    })
    .catch(networkError => (
    return(
    {
        status:false,
        message:"Something is wrong with the server in catch",
        networkError
    }
    )
    ))

在开始和结束括号中可能会有一些起伏。