Can a promise be created without using the constructor new promise() or =>resolve & =>rejected? Let's explore an alternative method below.
export function getItById(id) {
return fetch(`path`, {
method: 'GET',
}).then(rslt => {
if (!rslt || !rslt.ok) {
throw new Error('failure !');
} else {
return rslt.json();
}
});
}
It seems like everything is in order, but I might be overlooking something. The getItById function indeed returns a promise, so there is no necessity to instantiate one.
When utilizing the function, simply use
getItById(2).then(results => {
console.log(results)
})
In response to the query "is it possible to create a promise without using new promise," the answer is affirmative. Every HTTP call, database call, file read, or write operation returns a promise.
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