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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 | "use strict";
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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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