kuis-concurrency
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class NetworkError extends Error {
constructor(message) {
super(message);
this.name = 'NetworkError';
}
}
// TODO: 1
const fetchingUserFromInternet = (isOffline) => {
return new Promise ((resolve, reject) =>{
setTimeout (() => {
if(isOffline){
reject(new NetworkError('Gagal mendapatkan data dari internet'), null)
}
resolve({name: 'John', age: 18});
},500);
})
};
// TODO: 2
async function gettingUserName() {
try {
const user = await fetchingUserFromInternet(false);
return user.name;
} catch (error){
return error.message;
}
}
gettingUserName().then((value)=>{
console.log(value)
})
JavaScript
INFO