https://stackoverflow.com/questions/47015693/how-to-fix-throw-of-exception-caught-locally

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function(){
    try{
        if(xxx){
            throw new Exception("error");
        }
    }catch(){
    }
}

when throw an exception in try statement, will show an warning:

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'throw' of exception caught locally. This inspection reports any instances of JavaScript throw statements whose exceptions are always caught by containing try statements. Using throw statements as a "goto" to change the local flow of control is likely to be confusing.

if this is a promise or async function, await is a kind of promise, u can return an reject.

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async function(name){
    try{
        let valid = await check(name);
        if(valid){
            return Promise.reject("error");
        }
    }catch(){
    }
}

normally, packing this exception in an function

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function checkHandle(valid){
    if(valid){
        throw Error("error");
    }
}
async function(name){
    try{
        let valid = await check(name);
        checkHandle(valid);
    }catch(){
    }
}