15 lines
532 B
TypeScript
15 lines
532 B
TypeScript
/*
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* SPDX-FileCopyrightText: syuilo and misskey-project
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* SPDX-License-Identifier: AGPL-3.0-only
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*/
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export default (v, digits = 0) => {
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if (v == null) return '?';
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const sizes = ['B', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB', 'RB', 'QB'];
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if (v === 0) return '0';
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const isMinus = v < 0;
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if (isMinus) v = -v;
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const i = Math.floor(Math.log(v) / Math.log(1024));
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return (isMinus ? '-' : '') + (v / Math.pow(1024, i)).toFixed(digits).replace(/(\.[1-9]*)0+$/, '$1').replace(/\.$/, '') + (sizes[i] ?? `e+${ i * 3 }B`);
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};
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