2016-11-29 23:45:03 +08:00
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/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Sean Larkin @thelarkinn
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*/
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2018-07-30 23:08:51 +08:00
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2017-02-21 21:52:40 +08:00
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"use strict";
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2016-11-29 23:32:10 +08:00
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2018-11-09 05:59:19 +08:00
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/**
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* @param {number} size the size in bytes
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* @returns {string} the formatted size
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*/
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2018-07-27 04:37:21 +08:00
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exports.formatSize = size => {
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2018-03-29 21:28:03 +08:00
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if (typeof size !== "number" || Number.isNaN(size) === true) {
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return "unknown size";
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}
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2018-02-25 09:00:20 +08:00
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if (size <= 0) {
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2016-11-29 23:45:03 +08:00
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return "0 bytes";
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}
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2016-11-29 23:32:10 +08:00
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2017-10-09 18:20:20 +08:00
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const abbreviations = ["bytes", "KiB", "MiB", "GiB"];
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const index = Math.floor(Math.log(size) / Math.log(1024));
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2016-11-29 23:32:10 +08:00
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2018-02-25 09:00:20 +08:00
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return `${+(size / Math.pow(1024, index)).toPrecision(3)} ${
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abbreviations[index]
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}`;
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2017-01-11 17:51:58 +08:00
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};
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