Question

我的恳切请求提供了优质和回报数据,但我有可能通过未经处理的承诺拒绝警告。在请求结束时,我增加了渔获量,捕获功能确实收回了一些数据,但警告似乎并没有消失。它还说了参考错误,它可能发现有变的错误,我不理解,它指的是什么。我审视了资源,我发现,通常不相干的拒绝承诺是因为没有捕获物,或者捕获量不会退回任何东西,但我的恳求双方都有这种要求。

Here is my fetch request:

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
    }))

此处为错误:

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
    }
    )
    ))

开放和封闭的方括号中可能会有几处 up。

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