# targetModulesByContainer

**Kind:** Constant

**Source:** [`packages/core/router/router-module.ts`](https://github.com/nestjs/nest/blob/master/packages/core/router/router-module.ts#L11)

**Part of:** [Core](subsystem-packages-core)

## Definition

```ts
new WeakMap<
  ModulesContainer,
  WeakSet<ModuleClass>
>()
```

## Value

```ts
new WeakMap<
  ModulesContainer,
  WeakSet<ModuleClass>
>()
```