CODEWITHSUNDEEP
javascripttypescriptasync-await
hussain
hussain

Reputation: 7083

await returning undefined when i call async function?

So in main.ts i am trying to call class method processResponse to get the data back from handler but it always return custObject undefined its nor even stepping into processResponse function , what is implemented wrong in below code ?

main.ts

private async custResponse(data: any): Promise < any > {
    const custObject = await RequestResponseHandler.processResponse(data);
    return custObject;
}

handler.ts

public static async processResponse(data: any): Promise<any> {
    let response: any = {};
    console.log("Data>>..>>>>", data); // undefined
    try {
        if (data.Header.StatusCode === "0000") {
            response = data.Details;
            const tokenId = await this.cacheResponse(response);
            response.Header.tokenID = tokenId;
            return response;
        }
    } catch (err) {
            return data;
    }

}

Upvotes: 1

Views: 405

Answers (1)

Kashif Siddiqui
Kashif Siddiqui

Reputation: 1546

Since your console.log("Data>>..>>>>", data); is undefined that means the issue is somewhere upstream. You are not passing anything in the data argument to this method. Try checking where you are calling custResponse method and see if the data is actually being passed or not (Its probably not).

As for the undefined return, In your code you are not returning anything if the status code is not OK (In the try block). Try putting some return at the end.

public static async processResponse(data: any): Promise<any> {
    //....
    //try catch stuff...
    //....
    return data //or something else

}

Upvotes: 1

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