Function toRelativeString

toRelativeString(
    datesOrDuration:
        | Readonly<Partial<Record<DurationUnit, undefined | number>>>
        | Readonly<{ end: Readonly<FullDate>; start: Readonly<FullDate> }>,
    units: Readonly<DurationUnitSelection>,
    options?: Readonly<RelativeStringOptions>,
): string
This function starts with a duration (either by being directly passed a duration or by diffing two dates into a duration) and converts that duration into a relative string like "1 month ago" or "in 1 month". Rounding is automatically set to 0 decimal points, but that can be changed.

When extremely close to a 0 difference, the output string will be 'just now', which can be disabled.
Parameters
- datesOrDuration:
  | Readonly<Partial<Record<DurationUnit, undefined | number>>>
  | Readonly<{ end: Readonly<FullDate>; start: Readonly<FullDate> }>
- units: Readonly<DurationUnitSelection>
- options: Readonly<RelativeStringOptions> = {}
Returns string
Example
```
import {toRelativeString, selectAllDurationUnits} from 'date-vir';

toRelativeString({days: 1.6}, {days: true}); // `'in 2 days'`
toRelativeString({days: 1.6}, {days: true, hours: true}); // `'in 1 day, 14 hours'`
toRelativeString({seconds: 1}, selectAllDurationUnits); // `'just now'`
```
- Defined in packages/date-vir/src/formatting/relative-string.ts:82