NanoTime

Gets the current time in nanoseconds or microseconds.

In node.js you can get high resolution time with process.hrtime(), but it is from an unknown relative time, not epoch. So this library helps that by calculating the difference and adding it to the current time.

Usage

Since javascript can't hold a nanosecond as an INT safely (_Number.MAX_SAFE_INTEGER_), we return a string instead.

``js
const now = require('nano-time');

now(); // '1476742925219947761' (returns a string)
now.micro(); // '1476742921398373'
now.microseconds(); // alias for now.micro();
``