30 lines
701 B
JavaScript
30 lines
701 B
JavaScript
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module.exports = function naturalCmp(str1, str2) {
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if (str1 == str2) return 0;
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if (!str1) return -1;
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if (!str2) return 1;
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var cmpRegex = /(\.\d+|\d+|\D+)/g,
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tokens1 = String(str1).match(cmpRegex),
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tokens2 = String(str2).match(cmpRegex),
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count = Math.min(tokens1.length, tokens2.length);
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for (var i = 0; i < count; i++) {
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var a = tokens1[i],
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b = tokens2[i];
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if (a !== b) {
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var num1 = +a;
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var num2 = +b;
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if (num1 === num1 && num2 === num2) {
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return num1 > num2 ? 1 : -1;
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}
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return a < b ? -1 : 1;
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}
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}
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if (tokens1.length != tokens2.length)
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return tokens1.length - tokens2.length;
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return str1 < str2 ? -1 : 1;
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};
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