All files / test/helpers index.ts

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/*
 * Copyright © 2019 Lisk Foundation
 *
 * See the LICENSE file at the top-level directory of this distribution
 * for licensing information.
 *
 * Unless otherwise agreed in a custom licensing agreement with the Lisk Foundation,
 * no part of this software, including this file, may be copied, modified,
 * propagated, or distributed except according to the terms contained in the
 * LICENSE file.
 *
 * Removal or modification of this copyright notice is prohibited.
 *
 */
export const makeInvalid = (str: string): string => {
	const char = str[0] === '0' ? '1' : '0';
	return `${char}${str.slice(1)}`;
};