@chatterton/angular2-schema-form/src/schema-form/model/actionregistry.ts

Angular2 Schema Form (DISCLAIMER: it is not related to angular-schema-form)

import { Action } from './action';

export class ActionRegistry {
  actions: {[key: string]: Action} = {};

  clear() {
    this.actions = {};
  }

  register(actionId: string, action: Action) {
    this.actions[actionId] = action;
  }

  get(actionId: string) {
    return this.actions[actionId];
  }
}