Type Alias MapMultiOpts<V>

MapMultiOpts: { groupBy?: (value: V) => string }

Type Parameters

V

Type declaration

Optional ReadonlygroupBy?: (value: V) => string
Returns a group for values added via addValue. Eg. maybe you want to group values in the shape {name: 'Samantha' city: 'Copenhagen'} by city:
```
const opts = {
 groupBy: (v) => v.city
}
```