Hilla is a powerful modern web framework that integrates a Spring Boot Java backend with a reactive TypeScript frontend, allowing developers to build applications with ease. In this article, we will explore how to effectively use Hilla, its type-safe server communication, and troubleshooting tips along the way.

Why Choose Hilla?

Hilla speeds up the app development process by providing type-safe server communication, UI components, and integrated tooling. This ensures that you can focus on building features rather than getting bogged down by backend communication issues.

Simple Type-Safe Server Communication

One of Hilla’s standout features is its type-safe endpoint access. Here’s an analogy to understand this better: Imagine Hilla as a well-organized library where every book (data) is perfectly labeled (type-safe) and placed in the right section (endpoint). This makes it easy to find and access the information you need without any confusion.

Here’s a glimpse into the Hilla code structure:

import Person from FrontendgeneratedcomvaadinhillademoentityPerson;
import PersonEndpoint from Frontendgeneratedendpoints;

async function getPeopleWithPhoneNumber() {
    const people: Person[] = await PersonEndpoint.findAll();
    // Compile error: The property is phone, not phoneNumber
    return people.filter((person) => !!person.phoneNumber);
}

console.log("People with phone numbers: ", getPeopleWithPhoneNumber());

Here’s how this code works:

• The code imports a Person entity that represents the user details.
• It then fetches a list of people from a type-safe endpoint called PersonEndpoint.
• Finally, it filters the results to show only those with a phone number, although a small error might occur if a wrong property name is used (phoneNumber instead of phone).

Setting Up Your Hilla Project

To start developing with Hilla, follow these steps:

1. Clone the Hilla repository using the command:

sh
git clone https://github.com/vaadin/hilla.git

2. Navigate into your cloned directory and install the necessary dependencies:

npm install

3. Build your project:

npm run build

4. Finally, run your tests to ensure everything works correctly:

npm test

Troubleshooting Common Issues

While working with Hilla, you may run into some issues. Here are a few troubleshooting tips:

• Compile Errors: Ensure that your property names match those in your Java entities. If you get a complaint about “phoneNumber,” check if there’s an error in the property name.
• Environment Mismatch: Verify that you have the correct versions of Node.js (>=18 LTS) and npm (^9) installed, as these are crucial for running Hilla properly.
• Documentation Access: For more information, refer to the official documentation.

For more insights, updates, or to collaborate on AI development projects, stay connected with fxis.ai.

Getting Additional Help

If you want to contribute, the best way is to try out Hilla and provide feedback on the forum or submit issues on GitHub.

At fxis.ai, we believe that such advancements are crucial for the future of AI, as they enable more comprehensive and effective solutions. Our team is continually exploring new methodologies to push the envelope in artificial intelligence, ensuring that our clients benefit from the latest technological innovations.

Start Your Hilla Adventure Today!

Hilla serves as a bridge between developers and a smooth development experience. So what are you waiting for? Dive into the world of Hilla and revolutionize your Java application development!