TypeError: Cannot Read Property 'data' of Undefined When Fetching API Data

[Ndahiroloicke]

Version

v16.0.0

Platform

Microsoft Windows 10 Pro

Subsystem

No response

What steps will reproduce the bug?

// Example of a function that fetches data from an API
function fetchData() {
let response = undefined; // Simulating an undefined response

// This line will throw a TypeError because response is undefined
const data = response.data;

console.log(data);

}

// Call the function to reproduce the bug
fetchData();

How often does it reproduce? Is there a required condition?

fetch(url)
.then(response => {
if (!response.ok) {
throw new Error('Network response was not ok');
}
return response.json();
})
.then(data => {
console.log(data); // Now you can safely access data
})
.catch(error => {
console.error('There was a problem with the fetch operation:', error);
});

What is the expected behavior? Why is that the expected behavior?

{
"data": {
"id": 1,
"name": "John Doe",
"email": "john.doe@example.com"
}
}

What do you see instead?

TypeError: Cannot read property 'data' of undefined

Additional information

No response

[RedYetiDev]

v16 is EoL. Additionally, the way this issue is formatted, it's extremely difficult to see what went wrong. afaict this is behaving correctly. You can't access a property of undefined