boonya/rtsp-video-recorder

import fs from 'fs';
import pathApi from 'path';

/**
 * @returns bytes
 */
export default function dirSize(path: string) {
    return getDirListing(path)
        .map((item) => fs.statSync(item).size)
        .reduce((acc, size) => acc + size, 0);
}

function getDirListing(dir: string): string[] {
    return fs.readdirSync(dir)
        .map((item) => {
            const path = pathApi.join(dir, item);
            if (fs.statSync(path).isDirectory()) {
                return getDirListing(path);
            }
            return path;
        })
        .reduce<string[]>((acc, i) => {
            if (Array.isArray(i)) {
                return [...acc, ...i];
            }
            return [...acc, i];
        }, []);
}