verror-0/lib/esm/from-list.js

VError without dependencies on top of nodejs standart library

import { isError } from './is-error.js';
import { MultiError } from './multi-error.js';
export const fromList = (errors) => {
    if (errors.length === 0) {
        return null;
    }
    if (errors.some((e) => !isError(e))) {
        throw new Error('errors must be an Error list');
    }
    if (errors.length == 1) {
        // The types have already been checked above.
        return errors[0];
    }
    return new MultiError(errors);
};