23 lines
688 B
TypeScript
23 lines
688 B
TypeScript
import { ObjectMap } from '@0x/types';
|
|
import * as _ from 'lodash';
|
|
|
|
import { Actor, Constructor } from './base';
|
|
|
|
/**
|
|
* Utility function to convert Actors into an object mapping readable names to addresses.
|
|
* Useful for BalanceStore.
|
|
*/
|
|
export function actorAddressesByName(actors: Actor[]): ObjectMap<string> {
|
|
return _.zipObject(actors.map(actor => actor.name), actors.map(actor => actor.address));
|
|
}
|
|
|
|
/**
|
|
* Filters the given actors by class.
|
|
*/
|
|
export function filterActorsByRole<TClass extends Constructor>(
|
|
actors: Actor[],
|
|
role: TClass,
|
|
): Array<InstanceType<typeof role>> {
|
|
return actors.filter(actor => actor instanceof role) as InstanceType<typeof role>;
|
|
}
|