| 1 | /*
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| 2 | MIT License http://www.opensource.org/licenses/mit-license.php
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| 3 | Author Sean Larkin @thelarkinn
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| 4 | */
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| 5 |
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| 6 | ;
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| 7 |
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| 8 | /**
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| 9 | * @param {number} size the size in bytes
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| 10 | * @returns {string} the formatted size
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| 11 | */
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| 12 | exports.formatSize = size => {
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| 13 | if (typeof size !== "number" || Number.isNaN(size) === true) {
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| 14 | return "unknown size";
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| 15 | }
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| 16 |
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| 17 | if (size <= 0) {
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| 18 | return "0 bytes";
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| 19 | }
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| 20 |
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| 21 | const abbreviations = ["bytes", "KiB", "MiB", "GiB"];
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| 22 | const index = Math.floor(Math.log(size) / Math.log(1024));
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| 23 |
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| 24 | return `${+(size / Math.pow(1024, index)).toPrecision(3)} ${
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| 25 | abbreviations[index]
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| 26 | }`;
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| 27 | };
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| 28 | |
| \ | No newline at end of file |