mastodon/streaming/errors.js

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// @ts-check
/**
* Typed as a string because otherwise it's a const string, which means we can't
* override it in let statements.
* @type {string}
*/
export const UNEXPECTED_ERROR_MESSAGE = 'An unexpected error occurred';
/**
* Extracts the status and message properties from the error object, if
* available for public use. The `unknown` is for catch statements
* @param {Error | AuthenticationError | RequestError | unknown} err
*/
export function extractStatusAndMessage(err) {
let statusCode = 500;
let errorMessage = UNEXPECTED_ERROR_MESSAGE;
if (err instanceof AuthenticationError || err instanceof RequestError) {
statusCode = err.status;
errorMessage = err.message;
}
return { statusCode, errorMessage };
}
export class RequestError extends Error {
/**
* @param {string} message
*/
constructor(message) {
super(message);
this.name = "RequestError";
this.status = 400;
}
}
export class AuthenticationError extends Error {
/**
* @param {string} message
*/
constructor(message) {
super(message);
this.name = "AuthenticationError";
this.status = 401;
}
}