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Learn WebAssembly

You're reading from   Learn WebAssembly Build web applications with native performance using Wasm and C/C++

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Product type Paperback
Published in Sep 2018
Publisher Packt
ISBN-13 9781788997379
Length 328 pages
Edition 1st Edition
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Author (1):
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Mike Rourke Mike Rourke
Author Profile Icon Mike Rourke
Mike Rourke
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Table of Contents (12) Chapters Close

Preface 1. What is WebAssembly? 2. Elements of WebAssembly - Wat, Wasm, and the JavaScript API FREE CHAPTER 3. Setting Up a Development Environment 4. Installing the Required Dependencies 5. Creating and Loading a WebAssembly Module 6. Interacting with JavaScript and Debugging 7. Creating an Application from Scratch 8. Porting a Game with Emscripten 9. Integrating with Node.js 10. Advanced Tools and Upcoming Features 11. Other Books You May Enjoy

Server-side WebAssembly with Express


Node.js can be used in several ways to add value to a WebAssembly project. In this section, we're going to walk through an example Node.js application that integrates WebAssembly. The application uses Express with some simple routes to call functions from a compiled Wasm module.

Overview of the project

The project reuses some of the code from the application we built in Chapter 7, Creating an Application from Scratch (Cook the Books) to demonstrate how Node.js can be used with WebAssembly. The code for this section is located in the /chapter-09-node/server-example folder in the learn-webassembly repository. We're going to review portions of the application directly applicable to Node.js. The following structure represents the file structure for the project:

├── /lib
│    └── main.c
├── /src
|    ├── Transaction.js
|    ├── /assets
|    │   ├── db.json
|    │   ├── main.wasm
|    │   └── memory.wasm
|    ├── assign-routes.js
|    ├── index.js
|    └── load...
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