/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Ivan Kopeykin @vankop
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*/
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"use strict";
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const A_CODE = "a".charCodeAt(0);
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/**
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* @param {string} hash hash
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* @param {number} hashLength hash length
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* @returns {string} returns hash that has at least one non numeric char
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*/
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module.exports = (hash, hashLength) => {
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if (hashLength < 1) return "";
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const slice = hash.slice(0, hashLength);
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if (slice.match(/[^\d]/)) return slice;
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return `${String.fromCharCode(
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A_CODE + (parseInt(hash[0], 10) % 6)
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)}${slice.slice(1)}`;
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};
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