Introduction to lemonsqueezy.js
The lemonsqueezy.js is an official JavaScript Software Development Kit (SDK) for Lemon Squeezy, a platform designed to simplify the integration of billing functionalities into JavaScript applications. It provides developers with tools and references necessary to interact with the Lemon Squeezy API efficiently.
Understanding the SDK
The SDK enables developers to incorporate billing processes in their applications effortlessly. A detailed API Reference is available to familiarize developers with how the Lemon Squeezy API operates. Additionally, a comprehensive Wiki page offers insights into the utilization of various functions provided by the SDK.
Key Features
-
Type-safe Development: lemonsqueezy.js is written in TypeScript, a superset of JavaScript that ensures high code quality through type-checking, thus minimizing potential runtime errors.
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Tree-shakeable Architecture: This feature allows developers to include only the necessary functions in their builds, thereby optimizing the bundle size of their applications.
Installation Guide
To integrate lemonsqueezy.js into a project, it can be installed via different package managers:
# Using bun
bun install @lemonsqueezy/lemonsqueezy.js
# Using pnpm
pnpm install @lemonsqueezy/lemonsqueezy.js
# Using npm
npm install @lemonsqueezy/lemonsqueezy.js
After installation, an API key is essential for authentication. Developers can create an API key through the Lemon Squeezy dashboard under Settings > API and should incorporate this API key into their project's environment settings, ensuring it remains secure and hidden from public view, as direct usage in the browser could expose sensitive account details.
Testing and Live Integration
The SDK supports a Test Mode, allowing developers to experiment and fully integrate Lemon Squeezy's API within a secure testing environment. This mode interacts with mock test store data, ensuring that testing does not interfere with live data. Before deploying live, it's crucial to switch to a production API key to work with real store data.
Sample Usage
Here's a small example demonstrating how to use the SDK to get authenticated user data:
import {
getAuthenticatedUser,
lemonSqueezySetup,
} from "@lemonsqueezy/lemonsqueezy.js";
const apiKey = import.meta.env.LEMON_SQUEEZY_API_KEY;
lemonSqueezySetup({
apiKey,
onError: (error) => console.error("Error!", error),
});
const { data, error } = await getAuthenticatedUser();
if (error) {
console.log(error.message);
} else {
console.log(data);
}
This snippet showcases basic error handling while fetching an authenticated user using the provided API.
Bundle Size Optimization
lemonsqueezy.js prides itself on being lightweight, as demonstrated in its bundle size estimates. The library is structured so that each function occupies minimal space, ranging from just over half a kilobyte to around 1 kilobyte, ensuring the SDK remains efficient and effective.
Contribution and Licensing
Developers interested in contributing to the project can refer to the Contributing Guide. The project features an open source license, making it both accessible and modifiable to suit individual or organizational needs.
This SDK is a comprehensive tool for developers looking to leverage Lemon Squeezy's billing services within their JavaScript applications, providing ease of use, robust documentation, and a scalable architecture suited for modern development needs.