---
title: Types Reference
description: Complete catalog of TypeScript interfaces, types, and generics exported by @nooh-ts/nooh.
---

Summary of all core TypeScript types exported from `@nooh-ts/nooh`.

## Configuration Types

```ts
import type {
  ConfigEnvironment,
  NoohConfig,
  NoohConfigOptions,
  NoohGroup,
  NoohGroupOptions,
} from "@nooh-ts/nooh";
```

### `NoohConfigOptions<Environment>`
```ts
export interface NoohConfigOptions<Environment extends Env = Env> {
  readonly dependencies?: string;
  readonly onError?: NoohErrorHandler<Environment>;
  readonly routes?: string;
  readonly validator?: NoohValidatorOptions;
}
```

### `NoohGroupOptions<Environment, Middleware>`
```ts
export interface NoohGroupOptions<
  Environment extends Env = Env,
  Middleware = unknown,
> {
  readonly middleware?: readonly Middleware[];
  readonly onError?: NoohErrorHandler<Environment>;
}
```

---

## Dependency Injection Types

```ts
import type {
  AnyDependencyReference,
  Container,
  DependencyContext,
  DependencyDefinition,
  DependencyEntry,
  DependencyName,
  DependencyReference,
  DependencyResolutionContext,
  DependencyScope,
  DependencyValue,
  DuplicateDependency,
  InvalidDependencyScope,
  ReservedDependencyName,
  ValidateDependencies,
  ValidateDependencyScopes,
} from "@nooh-ts/nooh";
```

### `DependencyScope`
```ts
export type DependencyScope = "singleton" | "request" | "transient" | "value";
```

### `DependencyResolutionContext`
```ts
export interface DependencyResolutionContext {
  readonly cache: Map<object, unknown>;
  readonly resolving: Set<object>;
  readonly stack: string[];
}
```

---

## Error Handling Types

```ts
import type {
  ErrorConstructor,
  ErrorContext,
  ErrorFactory,
  NoohErrorHandler,
} from "@nooh-ts/nooh";
```

### `NoohErrorHandler<Environment, Path>`
```ts
export type NoohErrorHandler<
  Environment extends Env = Env,
  Path extends string = string,
> = (
  error: Error | HTTPResponseError,
  c: Context<Environment, Path>
) => HandlerResponse<unknown>;
```

---

## Validation Types

```ts
import type {
  NoohRequestValidationTarget,
  NoohStandardSchema,
  NoohStandardSchemaInput,
  NoohStandardSchemaOutput,
  NoohValidationTarget,
  NoohValidatorEngine,
  NoohValidatorOptions,
} from "@nooh-ts/nooh";
```

### `NoohRequestValidationTarget`
```ts
export type NoohRequestValidationTarget =
  | "json"
  | "form"
  | "query"
  | "param"
  | "header"
  | "cookie";
```