interface EComponents {
  //...
}

interface IComponent {
  //...
}

interface IComponentStore<T extends IComponent> {
  setComponent(componentName: EComponents, component: T): void;
  getComponents(componentName: EComponents): T[];
}

class ComponentStore<T extends IComponent> implements IComponentStore<T> {
  private components = new Map<EComponents, T[]>();

  setComponent(componentName: EComponents, component: T): void {
    const components = this.components.get(componentName) || [];
    this.components.set(componentName, [...components, component ]);
  }

  getComponents(componentName: EComponents): T[] {
    return this.components.get(componentName) || [];
  }
}

"use strict";
class ComponentStore {
    constructor() {
        this.components = new Map();
    }
    setComponent(componentName, component) {
        const components = this.components.get(componentName) || [];
        this.components.set(componentName, [...components, component]);
    }
    getComponents(componentName) {
        return this.components.get(componentName) || [];
    }
}