10 lines
434 B
TypeScript
10 lines
434 B
TypeScript
export default (v, fractionDigits = 0) => {
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if (v == null) return 'N/A';
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if (v === 0) return '0';
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const sizes = ['', 'K', 'M', 'G', 'T', 'P', 'E', 'Z', 'Y', 'R', 'Q'];
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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(1000));
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return (isMinus ? '-' : '') + (v / Math.pow(1000, i)).toFixed(fractionDigits).replace(/(\.[1-9]*)0+$/, '$1').replace(/\.$/, '') + (sizes[i] ?? `e+${ i * 3 }`);
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};
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