Function nonNumericOnlyHash

lib/util/nonNumericOnlyHash.js:18–25

(hash, hashLength)

 * @returns {string} returns hash that has at least one non numeric char
 */
const nonNumericOnlyHash = (hash, hashLength) => {
	if (hashLength < 1) return "";
	const slice = hash.slice(0, hashLength);
	if (/[^\d]/.test(slice)) return slice;
	return `${String.fromCharCode(
		A_CODE + (Number.parseInt(hash[0], 10) % 6)
	)}${slice.slice(1)}`;
};

/**
 * Digests a hash and truncates it to a content-hash string (non-numeric first char).