WebAssembly (or just Wasm) can no longer be called an experiment. It allows you to run code written in C, C++, Rust, and other languages directly in the browser at almost native speed.
Heavy tasks (image processing, 3D rendering, ML) are moving to WebAssembly.
JavaScript remains the "glue" between UI and logic.
Developers get new features without rewriting the entire project.
JavaScript ceases to be a "universal hammer" and turns into a connecting layer between high-performance modules.
Bun: calling Node.js
Node.js has been the standard for server-side JavaScript for decades. But now it's time for Bun — a new runtime written in Zig.
Speed — HTTP requests are processed faster than in Node.js.
Built-in tools — package manager, test runner and bundler.
Compatibility — support for most npm libraries.
Bun offers the same as Node.js, but faster and more convenient. Many new projects are already starting on Bun.
Rust: competitor or ally?
Rust is actively taking positions from JavaScript on the server and in the infrastructure.
C++ level performance with a safe memory model.
Integration through WebAssembly in web applications.
An alternative to Node.js backend in new projects.
Rust and JavaScript are not always competitors — more often they work in tandem: Rust for heavy logic, JS for interfaces and integration.
What awaits the developers?
Fullstack specialists will become multistack specialists.
The browser ceases to be "pure JavaScript" — WebAssembly will become the standard.
Bun is gradually replacing Node.js in new projects.
JavaScript remains the "glue" of the web, but with a different role.
The future of JavaScript is not a replacement, but evolution through collaborationRust takes on the heavy lifting, WebAssembly expands the capabilities of browsers, and Bun shows that server-side JavaScript is still capable of surprising.
JavaScript in 2025 is not a "language for everything", but the center of the ecosystem around which new technologies are formed.
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