@remix-run/web-fetch/src/errors/fetch-error.js

Web API compatible fetch implementation

import {FetchBaseError} from './base.js';

/**
 * @typedef {{
 * address?: string
 * code: string
 * dest?: string
 * errno: number
 * info?: object
 * message: string
 * path?: string
 * port?: number
 * syscall: string
 * }} SystemError
*/

/**
 * FetchError interface for operational errors
 */
export class FetchError extends FetchBaseError {
	/**
	 * @param  {string} message -      Error message for human
	 * @param  {string} type -        Error type for machine
	 * @param  {SystemError} [systemError] - For Node.js system error
	 */
	constructor(message, type, systemError) {
		super(message, type);
		// When err.type is `system`, err.erroredSysCall contains system error and err.code contains system error code
		if (systemError) {
			// eslint-disable-next-line no-multi-assign
			this.code = this.errno = systemError.code;
			this.erroredSysCall = systemError.syscall;
		}
	}
}