RocketChat/Rocket.Chat

import { numberFormat } from '../../lib/utils/stringUtils';

const formatMemorySize = (memorySize: number): string | null => {
    if (typeof memorySize !== 'number') {
        return null;
    }

    const units = ['bytes', 'kB', 'MB', 'GB'];

    let order;
    for (order = 0; order < units.length - 1; ++order) {
        const upperLimit = Math.pow(1024, order + 1);

        if (memorySize < upperLimit) {
            break;
        }
    }

    const divider = Math.pow(1024, order);
    const decimalDigits = order === 0 ? 0 : 2;
    return `${numberFormat(memorySize / divider, decimalDigits)} ${units[order]}`;
};

export const useFormatMemorySize = (): ((memorySize: number) => string | null) => formatMemorySize;