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Avoiding explicit promise construction antipattern
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function getUserDetail(username) { | |
if (userCache[username]) { | |
return Promise.resolve(userCache[username]); | |
} | |
// Use the fetch API to get the information | |
return fetch('users/' + username + '.json') | |
.then(function(result) { | |
userCache[username] = result; | |
return result; | |
}) | |
.catch(function() { | |
throw new Error('Could not find user: ' + username); | |
}); | |
} |
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