asyncAwaitIdea

idea.js

async function loginController(){
    try{
        const a = await loginService().
                        catch((error)=> {throw new CustomErrorHandler({code: 101, message:"a failed",error: error})});
        const b = await someUtil().
                    catch((error)=> {throw new CustomErrorHandler({code: 102, message:"b failed",error: error})});
        //someoeeoe
        if(a && b) console.log("no one failed")
    }catch(error){
      if(!(error instanceof CustomErrorHandler)){
          console.log("gen error",error)
      }
    }
}
function loginService(){
    return new Promise((resolve,reject)=>{
        resolve("hahaha");
        //reject("nonono");
    })
}

loginController();

function someUtil(){
 return new Promise((resolve,reject)=>{
        resolve("hahah")
        reject("nonono");
    })
}

function CustomErrorHandler(someObject){
    console.log(someObject)
}