# isObject

**Kind:** Function

**Source:** [`packages/common/utils/shared.utils.ts`](https://github.com/nestjs/nest/blob/master/packages/common/utils/shared.utils.ts#L4)

**Part of:** [Common](subsystem-packages-common)

## Signature

```ts
function isObject(fn: any): fn is object
```

## Parameters

| Name | Type |
|---|---|
| `fn` | `any` |

**Returns:** `fn is object`

## Used by

26 references from 26 files. Each is a place in this repository where the symbol is actually used — go read one rather than trusting an example.

### Imported by (26)

- `CustomHeader` — `packages/core/router/router-response-controller.ts`:18
- `AdditionalHeaders` — `packages/core/router/sse-stream.ts`:38
- `CreateDecoratorOptions` — `packages/core/services/reflector.service.ts`:8
- `BaseExceptionFilter` — `packages/core/exceptions/base-exception-filter.ts`:17
- `createContextId` — `packages/core/helpers/context-id-factory.ts`:5
- `InjectorDependency` — `packages/core/injector/injector.ts`:51
- `Module` — `packages/core/injector/module.ts`:44
- `NestApplication` — `packages/core/nest-application.ts`:54

…and 18 more.