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Klaim is a lightweight TypeScript library designed to manage APIs and record requests, optimized for an optimal user experience.

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πŸ“š Table of Contents

πŸš€ Features

  • Efficient API Management: Easily manage multiple APIs with streamlined integration and interaction capabilities.
  • API Grouping: Organize related APIs into logical groups with shared settings and configuration.
  • Route Grouping: Organize related routes into logical groups with inherited settings.
  • Request Recording: Seamlessly track requests for debugging and monitoring.
  • User Experience Optimization: Focused on performance and usability for a smooth user experience.
  • Lightweight: Minimal footprint for fast load times and minimal performance impact.
  • Middleware Support: Easily add middleware to modify requests and responses (before and after).
  • Hook System: Subscribe to hooks to monitor and react to specific events.
  • Caching: Enable caching on requests to reduce network load and improve performance.
  • Retry Mechanism: Automatically retry failed requests to enhance reliability.
  • TypeScript Support: Fully typed for enhanced code quality and developer experience.
  • Response Validation: Validate responses using schemas for increased reliability and consistency.
  • Pagination: Handle paginated requests easily with support for both page and offset based pagination.

βŒ› Next features

  • Rate Limiting (Version: 1.9)
  • Login (Version: 1.10)
  • Time Out (Version: 1.11)
  • Error Handling (Version: 1.12)

πŸ“₯ Installation

Install Klaim via npm:

// Using npm
npm install klaim

// Using bun
bun add klaim

// Using deno
deno add @antharuu/klaim

πŸ›  Usage

Basic API Configuration

First, set up the API configuration. Define the API and its base URL.

import {Api, Route} from 'klaim';
// For deno: import { Api, Route } from "@antharuu/klaim";

// Your simple Todo type
type Todo = {
	userId: number;
	id: number;
	title: string;
	completed: boolean;
};

// Create a new API with the name "hello" and the base URL "https://jsonplaceholder.typicode.com/"
Api.create("hello", "https://jsonplaceholder.typicode.com/", () => {
	// Define routes for the API
	Route.get<Todo[]>("listTodos", "todos");
	Route.get<Todo>("getTodo", "todos/[id]");
	Route.post<Todo>("addTodo", "todos");
});

Route Definition

Routes represent endpoints in your API and can be defined with different HTTP methods. Routes can include parameters and custom configurations:

Api.create("api", "https://api.example.com", () => {
	// Basic GET route
	Route.get("listUsers", "/users");

	// GET route with URL parameter
	Route.get("getUser", "/users/[id]");

	// POST route with custom headers and body
	Route.post("createUser", "/users", {
		"Content-Type": "application/json"
	}, {userId: 1, name: "John Doe"});

	// PUT route with parameter
	Route.put("updateUser", "/users/[id]");

	// DELETE route
	Route.delete("deleteUser", "/users/[id]");

	// PATCH route
	Route.patch("updateUserStatus", "/users/[id]/status");

	// OPTIONS route
	Route.options("userOptions", "/users");
});

Groups

Klaim provides powerful grouping capabilities for both APIs and routes. Groups can be used to organize related elements, share configuration, and maintain a clean structure in your application.

API Groups

Organize multiple APIs that serve related purposes:

import {Group, Api, Route} from 'klaim';

// Create a group for user-related services
Group.create("userServices", () => {
	// Authentication API
	Api.create("auth", "https://auth.example.com", () => {
		Route.post("login", "/login");
		Route.post("register", "/register");
	});

	// User Management API
	Api.create("users", "https://users.example.com", () => {
		Route.get("list", "/users");
		Route.get("getOne", "/users/[id]");
	});
}).withRetry(3); // Apply retry mechanism to all APIs in the group

// Access grouped APIs
await Klaim.userServices.auth.login({}, {username: "user", password: "pass"});
await Klaim.userServices.users.list();

Route Groups

Organize routes within an API into logical groups:

Api.create("hello", "https://api.example.com/", () => {
	// Group user-related routes
	Group.create("users", () => {
		Route.get<User[]>("list", "/users");
		Route.get<User>("getOne", "/users/[id]");
		Route.post<User>("create", "/users");
	}).withCache(60);  // Cache all user routes for 60 seconds

	// Group product-related routes
	Group.create("products", () => {
		Route.get("list", "/products");
		Route.get("getOne", "/products/[id]");
	});
});

// Use grouped routes
const users = await Klaim.hello.users.list();
const product = await Klaim.hello.products.getOne({id: 1});

Nested Groups

Create complex hierarchies with nested groups:

Group.create("services", () => {
	// Internal services group
	Group.create("internal", () => {
		Api.create("logs", "https://logs.internal.example.com", () => {
			Route.post("write", "/logs");
		});

		Api.create("metrics", "https://metrics.internal.example.com", () => {
			Route.post("track", "/metrics");
		});
	}).withRetry(5);  // More retries for internal services

	// External services group
	Group.create("external", () => {
		Api.create("weather", "https://api.weather.com", () => {
			Route.get("forecast", "/forecast/[city]");
		});

		Api.create("geocoding", "https://api.geocoding.com", () => {
			Route.get("search", "/search/[query]");
		});
	}).withCache(300);  // Cache external services longer
});

// Access nested groups
await Klaim.services.internal.logs.write({}, {message: "Log entry"});
await Klaim.services.external.weather.forecast({city: "Paris"});

Group Configuration

Groups can share configuration among all their members:

Group.create("apis", () => {
	Api.create("service1", "https://api1.example.com", () => {
		Route.get("test", "/test");
	});

	Api.create("service2", "https://api2.example.com", () => {
		Route.get("test", "/test");
	});
})
	.withCache(60)  // Enable caching for all APIs
	.withRetry(3)   // Enable retries for all APIs
	.before(({config}) => {  // Add authentication for all APIs
		config.headers.Authorization = `Bearer ${getToken()}`;
	})
	.after(({data}) => {  // Process all responses
		logResponse(data);
	});

Request Handling

Handle requests using the defined routes:

import {Klaim} from 'klaim';
// For deno: import { Klaim } from "@antharuu/klaim";

// Make a request to the "listTodos" route
const listOfTodos = await Klaim.hello.listTodos<Todo[]>();

// Make a request to the "getTodo" route with the parameter "id"
const todo = await Klaim.hello.getTodo<Todo>({id: 1});

// Make a request to the "addTodo" route
const newTodo = await Klaim.hello.addTodo<Todo>({}, {title: "New Todo", completed: false, userId: 1});

Middleware Usage

Add middleware to modify requests and responses. Use before middleware to alter requests before they are sent and after middleware to process responses:

Api.create("hello", "https://jsonplaceholder.typicode.com/", () => {
	// With before middleware
	Route.get<Todo>("getRandomTodo", "todos")
		.before(({url}) => {
			const random = Math.floor(Math.random() * 10) + 1;
			return {url: `${url}/${random}`};
		});

	// With after middleware
	Route.get<Todo>("getFirstTodo", "todos")
		.after(({data: [first]}) => ({data: first}));
});

Hook Subscription

Subscribe to hooks to monitor specific events:

import {Hook} from 'klaim';
// For deno: import { Hook } from "@antharuu/klaim";

// Subscribe to the "hello.getFirstTodo" hook
Hook.subscribe("hello.getFirstTodo", ({url}) => {
	console.log(`Requesting ${url}`);
});

Caching Requests

Enable caching on requests to reduce network load and improve performance. By default, the cache duration is 20 seconds, but you can specify a custom duration in seconds.

Caching Individual Routes

You can enable caching on individual routes:

Api.create("hello", "https://jsonplaceholder.typicode.com/", () => {
	// Get a list of todos with default cache duration (20 seconds)
	Route.get<Todo[]>("listTodos", "todos").withCache();

	// Get a specific todo by id with custom cache duration (300 seconds)
	Route.get<Todo>("getTodo", "todos/[id]").withCache(300);

	// Add a new todo (no cache)
	Route.post<Todo>("addTodo", "todos");
});

Now, when making requests, the caching feature will be applied.

Caching the Entire API

You can also enable caching for all routes defined within an API:

Api.create("hello", "https://jsonplaceholder.typicode.com/", () => {
	// Define routes for the API
	Route.get<Todo[]>("listTodos", "todos");
	Route.get<Todo>("getTodo", "todos/[id]");
	Route.post<Todo>("addTodo", "todos");
}).withCache(); // Enable default cache duration (20 seconds) for all routes

Retry Mechanism

Automatically retry failed requests to enhance reliability. You can specify the number of retry attempts for individual routes or for the entire API.

Retry on Individual Routes

Enable retry on individual routes:

Api.create("hello", "https://jsonplaceholder.typicode.com/", () => {
	// Get a list of todos with retry mechanism (default: 2)
	Route.get<Todo[]>("listTodos", "todos").withRetry();

	// Get a specific todo by id with retry mechanism (specified to 5)
	Route.get<Todo>("getTodo", "todos/[id]").withRetry(5);

	// Add a new todo (no retry)
	Route.post<Todo>("addTodo", "todos");
});

Retry the Entire API

Enable retry for all routes defined within an API:

Api.create("hello", "https://jsonplaceholder.typicode.com/", () => {
	// Define routes for the API
	Route.get<Todo[]>("listTodos", "todos");
	Route.get<Todo>("getTodo", "todos/[id]");
	Route.post<Todo>("addTodo", "todos");
}).withRetry();

Now, when a request fails, it will be retried the specified number of times before ultimately failing.

Response Validation

You can use Yup to validate the response schema for increased reliability and consistency. You can specify a schema for individual routes to ensure the response data conforms to the expected structure.

⚠️ Note: This feature requires the yup package to be installed.

Adding Validation to Individual Routes

Enable validation on individual routes:

import * as yup from 'yup';

// Define the schema using Yup
const todoSchema = yup.object().shape({
	userId: yup.number().required(),
	id: yup.number().min(1).max(10).required(),
	title: yup.string().required(),
	completed: yup.boolean().required()
});

Api.create("hello", "https://jsonplaceholder.typicode.com/", () => {
	// Get a specific todo by id with validation
	Route.get<Todo>("getTodo", "todos/[id]").validate(todoSchema);
});

// This request will fail because the id is out of range
const todoFail = await Klaim.hello.getTodo<Todo>({id: 15});

// This request will succeed
const todo = await Klaim.hello.getTodo<Todo>({id: 1});

Pagination

Configure pagination for routes that require it:

// Basic usage with custom limit and offset parameter
Api.create("api", "https://api.example.com", () => {
	Route.get("list", "/items").withPagination({
		limit: 20,          // Items per page
		page: 1,            // Default page number
		pageParam: "offset", // Parameter name for page/offset or any other custom parameter
		limitParam: "limit"  // Parameter name for limit
	}); // All options are optional
});

// Using paginated endpoints
const page1 = await Klaim.api.list();        // First page
const page2 = await Klaim.api.list(2);       // Second page
const customPage = await Klaim.api.list(5);  // Fifth page

⚠️ Note: The pagination feature simplifies your pagination parameters, but your API/backend needs to respond to these parameters. Klaim does not handle the pagination logic, only the parameters management.

πŸ”— Links

🀝 Contributing

Contributions are welcome! Please see the Contributing Guide for more details.

πŸ“œ License

This project is licensed under the MIT License - see the LICENSE file for details.

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Klaim is a lightweight TypeScript library designed to manage APIs and record requests, optimized for an optimal user experience.

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