Method inject

src/main/internal/container.ts:50–70

(token: Container.Injectable<T>, must = true)

  inject<T>(token: Container.Injectable<T>, must: false): T | undefined;

  inject<T>(token: Container.Injectable<T>, must = true) {
    const entry = this.#registry.get(token);

    if (entry) {
      if (entry.singleton) {
        if (entry.instance) {
          return entry.instance.value;
        }

        entry.instance = { value: entry.factory() };

        return entry.instance.value;
      } else {
        return entry.factory();
      }
    }

    if (must) {
      throw new Error(`Dependency with name '${token.name}' could not be resolved.`);
    }
  }

  /**
   * Global container instance