verror-0/lib/esm/wrap.js

VError without dependencies on top of nodejs standart library

import { fromList } from './from-list.js';
/**
 * Wraps `unknown` to `Error`. Handles nested errors (`AggregateError` case).
 *
 * @example
 * try {
 *   // Throws error with message "database connection error"
 *   await registerTicket(10001000)
 * } catch (err) {
 *   // Result message:
 *   // "Error register ticket 10001000: database connection error"
 *   throw new VError(wrap(err), 'Error register ticket %s', 10001000)
 * }
 */
export function wrap(err) {
    if (typeof err === 'string') {
        return new Error(err);
    }
    if (!err || typeof err !== 'object') {
        return new Error('unknown');
    }
    if (!(err instanceof Error)) {
        return new Error('unknown');
    }
    const hasErrorsProperty = 'errors' in err && Array.isArray(err.errors);
    const errorsNotEmpty = hasErrorsProperty && err.errors.length > 0;
    if (errorsNotEmpty) {
        const multiError = fromList(err.errors);
        if (!multiError) {
            return new Error('unknown');
        }
        return multiError;
    }
    return err;
}