#DEVDiscuss: JavaScript Runtimes

Just two cents from me:
Node.js is "just a runtime," while Bun focuses on being an all-in-one toolkit.

Both are capable of running JavaScript applications, but they have different approaches and focuses.
Node.js emphasizes standardization, backward compatibility, and long-term support (LTS), making it more centered on language-specific and runtime-specific aspects.
It is an integral part of the evolution of Javascript.

On the other hand, Bun is primarily geared toward developers, offering a streamlined experience with a single installation, zero setup, and efficient capabilities for running, debugging, testing, building, and bundling.

So, the choice isn't solely about the runtime.
It's more about choosing between an "All-In-One-Product" like Bun or selecting and customizing the entire toolchain to build something that will run on a runtime like Node.js.

At least for me, it's less about competition and more about complementing each other. Building software locally with Bun and deploying it to a server with a stable, LTS-versioned Node.js runtime sounds very appealing to me. 🤷‍♂️

How does the choice of a JavaScript runtime affect web application performance and user experience?

• Indeed, the choice of a JavaScript runtime can significantly impact web application performance and user experience. However, it's crucial for developers to consider not only immediate performance gains but also the longevity and sustainability of the chosen tool. Rushing to adopt the fastest solution available may lead to future compatibility issues and complications.

What have you observed regarding changes in JavaScript tools over the past five years?

• Over the last five years, developers have been increasingly focused on optimizing JavaScript to its maximum potential for improved performance. This emphasis on performance is a positive development, but it's worth noting that there are limits to how much performance enhancement can be squeezed out of JavaScript. For truly high-performance web applications, it may be necessary to explore alternative programming languages.

Are there any emerging JavaScript runtimes or technologies that developers should monitor?

• One noteworthy option to keep an eye on is "Bun." This runtime is somewhat unconventional and has been setting new standards within the Node.js ecosystem. However, while it shows promise, it's important to exercise caution. Bun is still in its early stages, with a relatively small developer community and VC backing. Its future success is not guaranteed, and it's not advisable to replace well-established tools like Node.js entirely. It's worth remembering that Bun owes its existence to the popularity of Node.js, which paved the way for innovations in this space.

Any noteworthy achievements, setbacks, or anecdotes related to this topic?

• It's commendable to acknowledge and celebrate the achievements of the Bun team, but it's essential not to place all your bets on Bun for long-lasting production applications. The project is still evolving, and it doesn't offer full backward compatibility as of now (although they are working on it). Bun's future looks promising, especially given its VC backing, but it's crucial not to discredit the significance of Node.js. Node.js laid the foundation that allowed projects like Bun to emerge. Node's widespread adoption and success have opened doors for innovation in the JavaScript runtime ecosystem.