igir/dist/src/polyfill/timePoly.js

🕹 A zero-setup ROM collection manager that sorts, filters, extracts or archives, patches, and reports on collections of any size on any OS.

export default {
    hrtimeMillis(timeMillis) {
        const hrtime = timeMillis === undefined
            ? undefined
            : [
                // ms -> s
                Math.floor(timeMillis / 1000),
                // ms -> ns
                (timeMillis - Math.floor(timeMillis / 1000) * 1000) * 1_000_000,
            ];
        const [sec, nano] = process.hrtime(hrtime);
        return sec * 1000 + Math.floor(nano / 1_000_000);
    },
};