34 lines
943 B
JavaScript
34 lines
943 B
JavaScript
|
const objectToString = Object.prototype.toString;
|
||
|
|
||
|
const isError = value => objectToString.call(value) === '[object Error]';
|
||
|
|
||
|
const errorMessages = new Set([
|
||
|
'network error', // Chrome
|
||
|
'Failed to fetch', // Chrome
|
||
|
'NetworkError when attempting to fetch resource.', // Firefox
|
||
|
'The Internet connection appears to be offline.', // Safari 16
|
||
|
'Load failed', // Safari 17+
|
||
|
'Network request failed', // `cross-fetch`
|
||
|
'fetch failed', // Undici (Node.js)
|
||
|
'terminated', // Undici (Node.js)
|
||
|
]);
|
||
|
|
||
|
export default function isNetworkError(error) {
|
||
|
const isValid = error
|
||
|
&& isError(error)
|
||
|
&& error.name === 'TypeError'
|
||
|
&& typeof error.message === 'string';
|
||
|
|
||
|
if (!isValid) {
|
||
|
return false;
|
||
|
}
|
||
|
|
||
|
// We do an extra check for Safari 17+ as it has a very generic error message.
|
||
|
// Network errors in Safari have no stack.
|
||
|
if (error.message === 'Load failed') {
|
||
|
return error.stack === undefined;
|
||
|
}
|
||
|
|
||
|
return errorMessages.has(error.message);
|
||
|
}
|