http-proxy-middleware/dist/status-code.js

The one-liner node.js proxy middleware for connect, express, next.js and more

export function getStatusCode(errorCode) {
    let statusCode;
    if (/HPE_INVALID/.test(errorCode)) {
        statusCode = 502;
    }
    else {
        switch (errorCode) {
            case 'ECONNRESET':
            case 'ENOTFOUND':
            case 'ECONNREFUSED':
            case 'ETIMEDOUT':
                statusCode = 504;
                break;
            default:
                statusCode = 500;
                break;
        }
    }
    return statusCode;
}