catchErrorTyped

//https://www.youtube.com/watch?v=AdmGHwvgaVs&t=414s

const catchErrorTyped = <T, E extends new (message?: string) => 
Error>(
    p: Promise<T>, 
    customErrors?: E[]
    ):Promise<(undefined| T)[] | [E]> => {
        
    return p.then((data:T) => {
        return [undefined, data];
    })
    .catch((error) => {
        if(customErrors === undefined) {
            return [error];    
        }

        if(customErrors.some(e => error instanceof e)){
            return [error];
        }

        throw error;
    })
}


const randomErrorAsync = () => new Promise((resolve, reject) => {
    const isError = Math.round(Math.random()) > 0;

    // uncomment for test
    // asd;

    setTimeout(isError ? () => reject(new RandomError()) : () => resolve('ok'), 1000);
});


class RandomError extends Error {
    name = 'RandomError'
}

(async function(){
    const [error, happyMessage] = await catchErrorTyped(randomErrorAsync(), [RandomError]);

    if(error){
        console.error(error);
    } else {
        console.info(happyMessage);
    }
}());