Welcome to the exciting world of WebAssembly debugging! Debugging WebAssembly (or wasm) modules can feel like a daunting task - especially given wasm's low-level nature. However, thanks to various advancements in tools and technologies, things are not as intimidating as they might first appear.

WebAssembly debugging is critical in web application development, as it allows developers to troubleshoot issues within their WebAssembly modules. But why do we need that, particularly if we're writing our original code in languages like C++? The answer hinges on the performance boost and other benefits wasm brings to the table. As an application scales, it becomes increasingly crucial to have that level of control over performance sensitive parts of our app.

Throughout this course, you'll get hands-on with debugging wasm modules. We will delve deep into inspecting, tracing, and rectifying common issues that you may come across while working with WebAssembly. These skills are vital for building performant and reliable web applications, and understanding WebAssembly debugging is instrumental in unleashing the full potential of WebAssembly.

Let's start exploring these concepts with some actual C++ code being compiled to wasm!

xxxxxxxxxx

#include <iostream>

using namespace std;

​

int main() {

  // This is a simple C++ program that outputs 'Hello, WebAssembly!'

  cout << 'Hello, WebAssembly!' << endl;

  return 0;

}