Instead of always round to integer, if it can round to certain decimal place it will be great!
For example:
ms(60000, {decimal: 1 }) // "1m"
ms(66000, {decimal: 1 }) // "1.1m"
ms(-3 * 66000, { long: true, decimal: 1 }) // "-3.3 minutes"
ms(234234234, { decimal: 2 }) // "2.71m"
ms(ms('10.5 hours'), { long: true, decimal: 1 }) // "10.5 hours"