[API reference](https://evolu.dev/docs/api-reference) › [@evolu/nodejs](https://evolu.dev/docs/api-reference/nodejs) › hrDurationBetween

```ts
function hrDurationBetween(start: HrTime, end: HrTime): HrDuration;
```

Defined in: [packages/nodejs/src/Time.ts:38](https://github.com/evoluhq/evolu/blob/59dabb7c56c68040b30d3919013adeb2b40bad10/packages/nodejs/src/Time.ts#L38)

Returns the elapsed nanoseconds between two high-resolution timestamps.

Throws if `end` precedes `start`.