---
title: "@api.global/typedrequest-interfaces"
---
# @api.global/typedrequest-interfaces

interfaces for making typed requests

## Install

To install `@api.global/typedrequest-interfaces`, you need to have Node.js installed on your system. You can then add this package to your project by running the following command in your terminal:

```bash
npm install @api.global/typedrequest-interfaces --save
```

This will add the package to your project's dependencies. Ensure you are in your project's directory or specify the path where your project is located.

## Usage

To use the `@api.global/typedrequest-interfaces` package in your TypeScript project, follow the steps below. This package provides interfaces for making typed requests, which can help enforce a structured request and response pattern in your applications.

### Setting Up Your Project

First, ensure your project is set up to use TypeScript and ESM (ECMAScript Modules). You will need a `tsconfig.json` file in your project root with at least the following settings:

```json
{
  "compilerOptions": {
    "target": "ESNext",
    "module": "ESNext",
    "moduleResolution": "node",
    "outDir": "./dist",
    "declaration": true,
    "esModuleInterop": true,
    "experimentalDecorators": true,
    "forceConsistentCasingInFileNames": true
  },
  "include": ["src/**/*"]
}
```

Adjust the settings according to your project requirements. This configuration supports modern JavaScript features and TypeScript.

### Basic Implementation

To use the interfaces provided by the package, start by importing them into your TypeScript file. Below is an example demonstrating how to define a typed request using the interfaces:

```typescript
import { ITypedRequest, ITypedEvent, ITag, IVirtualStream, IStreamRequest } from '@api.global/typedrequest-interfaces';

// Example: Defining a typed request
interface MyCustomRequest extends ITypedRequest {
  method: 'MyCustomMethod';
  authInfo?: {
    jwt: string;
  };
  request: {
    someData: string;
  };
  response: {
    resultData: number;
  };
}
```

This snippet shows how to create a custom interface `MyCustomRequest` that implements the `ITypedRequest` interface from the package. You can specify the types for the request and response data to match your application's needs.

### Handling Typed Events

You can also define and use typed events similar to the following example:

```typescript
// Example: Defining a typed event
interface MyCustomEvent extends ITypedEvent<{ message: string }> {
  name: 'MyCustomEvent';
  uniqueEventId: 'Event123';
  payload: {
    message: 'Hello World';
  };
}
```

### Utilizing Tags

Tags can be useful for attaching metadata or categorization information to your requests or events. Implementing a tag looks like this:

```typescript
// Example: Defining a tag
interface UserActionTag extends ITag {
  name: 'UserAction';
  payload: {
    userId: number;
    action: string;
  };
}
```

### Virtual Streams

For more advanced use cases, like handling data streams, the `IVirtualStream` interface can be implemented as follows:

```typescript
// Example: Implementing a virtual stream
class MyStream implements IVirtualStream<Uint8Array> {
  side = 'requesting';
  streamId = 'myStream123';
  sendMethod = async (data: Uint8Array) => { /* Implementation here */ };
  // Implement other required methods...
}
```

### Working with Stream Requests

Stream requests allow for handling requests that involve streaming data. Here is how you can use the `IStreamRequest` interface:

```typescript
// Example: Using an IStreamRequest
const myStreamRequest: IStreamRequest = {
  method: '##VirtualStream##',
  request: {
    streamId: 'myStream123',
    cycleId: 'cycle456',
    cycle: 'request',
    mainPurpose: 'start'
    // More properties here...
  },
  response: {
    // Response structure here...
  }
};
```

This setup demonstrates creating a request for initializing a virtual stream. Other `mainPurpose` values like 'chunk', 'read', 'end', and 'feedback' can also be used depending on the interaction with the stream.

The examples shown demonstrate the versatility of the `@api.global/typedrequest-interfaces` package in structuring your application's request-response mechanisms, event handling, tagging, and stream management. By following TypeScript and ESM conventions, you can leverage these interfaces to architect robust, typed APIs and services.

## License and Legal Information

This repository contains open-source code that is licensed under the MIT License. A copy of the MIT License can be found in the [license](license) file within this repository. 

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### Trademarks

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### Company Information

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Registered at District court Bremen HRB 35230 HB, Germany

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