CODEWITHSUNDEEP
javascript
Oleksandr Fomin
Oleksandr Fomin

Reputation: 2356

Return from a function when one of try ... catch block throws an error

I've got a function where I submit a large form and it makes multiple API calls. I tried to separate it into smaller functions cause there is some additional logic that depends on API response. I wrapped each API call within a function in try ... catch so that I have more control over the errors. The problem is that I need to terminate the parent function whenever one of the child function throws an error and I can't figure out the clean way of doing that.

So the code is the following:

const func1 = async() => {
    try {
        // api call + logic
    } catch (error) {
        // show error toast and terminate formSubmit function
    }
}

const func2 = async() => {
    try {
        // api call + logic
    } catch (error) {
        // show error toast and terminate formSubmit function
    }
}

const func3 = async() => {
    try {
        // api call + logic
    } catch (error) {
        // show error toast and terminate formSubmit function
    }
}


const formSubmit = async () => {
    await func1()
    await func2()
    await func3()
}

Upvotes: 0

Views: 960

Answers (1)

Willi Pasternak
Willi Pasternak

Reputation: 486

Just throw a new error or rethrow the error and then add a new handler in your formSubmit function.

const func1 = async() => {
    try {
        // api call + logic
    } catch (error) {
        // show error toast and terminate formSubmit function
        throw new Error("...");
    }
}

const func2 = async() => {
    try {
        // api call + logic
    } catch (error) {
        // show error toast and terminate formSubmit function
        throw new Error("...");
    }
}

const func3 = async() => {
    try {
        // api call + logic
    } catch (error) {
        // show error toast and terminate formSubmit function
        throw new Error("...");
    }
}


const formSubmit = async () => {
    try {
        await func1()
        await func2()
        await func3()
    } catch(e){
       // do what needs to be done on error
    }

}

Upvotes: 1

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