I have a code example in this format:
someFunction(data)
.then(response => {
return response.text();
}).then(text => {
console.log(text)
}).catch(err => {
console.error(err)
});
I want to stuff this into my own function and call it through out my code.
let result = await callSnippet(myData);
This is what I've been doing... Is this the best way? Should I be using a promise here?
async callSnippet(data) {
let response = null
await someFunction(data)
.then( d=> { return d.text(); })
.then( d=> { response = {success:true, result:d }; })
.catch( d=> { response = {success:false, result:d }; })
return response;
}
You shouldn't be using both await and .then(). What you should do is:
async callSnippet(data) {
let response = null;
try{
var d = await someFunction(data).text();
response = {success: true, result: d};
} catch(e){
response = {success: false, result: e};
}
return response;
}
The await keyword retrieves the value from a Promise, so you can't use .then() on that value. However, you can achieve the same functionality by using a try...catch statement.
Typically if you are waiting to await things, you would await each step and not use then.
async callSnippet(data) {
try {
const response = await someFunction(data);
const text = await response.text();
return { success: true, result: text };
} catch (e) {
return { success: false, result: e };
}
}