async function a(){
return new Promise(resolve=>{
setTimeout(()=>{
resolve('a')
},1000)
})
}
async function b(){
return new Promise(resolve=>{
setTimeout(()=>{
resolve('b')
},1000)
})
}
function d(){
console.log(11111111111)
}
let c = async function(){
console.log('22',await a())
console.log('33',await b())
}
c()