function memoryUsage() {
    const formatMemoryUsage = (data) => `${Math.round(data / 1024 / 1024 * 100) / 100} MB`;
    const memoryData = process.memoryUsage();

    return {
        rss: `${formatMemoryUsage(memoryData.rss)} -> Resident Set Size - total memory allocated for the process execution`,
        heapTotal: `${formatMemoryUsage(memoryData.heapTotal)} -> total size of the allocated heap`,
        heapUsed: `${formatMemoryUsage(memoryData.heapUsed)} -> actual memory used during the execution`,
        external: `${formatMemoryUsage(memoryData.external)} -> V8 external memory`,
    };
}
Code from here: https://stackoverflow.com/a/64550489/1097815
@returns {{rss: string, heapTotal: string, heapUsed: string, external: string}} Current memory usage