i am getting several error, that is ok, when the user reject, when the transaction was bad, and so on
but now i want to show differents message by their code error
in my service of my project i am getting this error
{code: 4001, message: 'MetaMask Tx Signature: User denied transaction', stack: '{\n "code": 4001,\n "message": "MetaMask Tx'}
this is my code
function getInformation=()=>{
try{
...
} catch (err) {
error = err
console.log('error', error) // error is the up message
throw new Error(error)
}
}
then i am using the getInformation function like this:
try{
...
const info= getInformation()
} catch (error) {
console.log('EERROR', error,error.code)
here i see the error as string
EERROR Error: [object Object]
at _callee$ (PWDService.js?9579:13)
at tryCatch (runtime.js?96cf:62)
at Generator.invoke [as _invoke] (runtime.js?96cf:296), undefined
and error.code is undefined, why i am getting as a string and error.code as undefined?
obviously error.code is undefined because error is an string
The first parameter of the Error constructor expects a human-readable message, i.e. a String.
This means that the object you're passing into new Error is being ToStringed, resulting in "[object Object] ..." as the message
If you are happy with the error coming into the initial catch, simply re-throw
try {
// ...
} catch (err) {
console.log('error', err);
throw err;
}
If you want to create a new custom error, you'll need to create it by either modifying the new Error or creating your own Error class, i.e.
try {
// ...
} catch (err) {
console.log('error', err);
const error = new Error(err.message);
error.code = err.code;
// other stuff
throw error;
}
or
class MMError extends Error {
constructor(message, code) {
super(message);
this.code = code;
// other stuff
}
}
// ...
try {
// ...
} catch (err) {
console.log('error', err);
const error = new MMError(err.message, err.code);
throw error;
}
@react1 you can always reconstruct the error and see all of its properties by doing something similar to the below,
try {
// ...
} catch (err) {
let errObject = Object.assign({}, err)
// console.log(errObject) to see what's there and what you can use
}