verror-0/lib/esm/multi-error.js

VError without dependencies on top of nodejs standart library

import { isError } from './is-error.js';
import { VError } from './verror.js';
/*
 * Represents a collection of errors for the purpose of consumers that generally
 * only deal with one error.  Callers can extract the individual errors
 * contained in this object, but may also just treat it as a normal single
 * error, in which case a summary message will be printed.
 */
export class MultiError extends VError {
    ase_errors;
    constructor(errors) {
        if (errors.some((e) => !isError(e))) {
            throw new Error('errors must be an Error list');
        }
        let name = 'MultiError';
        if (errors[0] && typeof errors[0] === 'object' && 'name' in errors[0]) {
            name = errors[0].name;
        }
        super({ cause: errors[0], name }, 'first of %d error%s', errors.length, errors.length === 1 ? '' : 's');
        this.ase_errors = errors;
    }
    errors() {
        return this.ase_errors.slice(0);
    }
}