After populating the file, we need to compile it down to Wasm for use in the JavaScript portion of the application. Run the build task by selecting Tasks | Run Build Task... from the menu or using the keyboard shortcut Cmd/Ctrl + Shift + B. If the build was successful, you'll see a file named main.wasm in the /src/assets folder. If an error occurred, the terminal should provide details on how to resolve it.

If you're not using VS Code, open a terminal instance in the /cook-the-books folder and run the following command:

emcc lib/main.c -Os -s WASM=1 -s SIDE_MODULE=1 -s BINARYEN_ASYNC_COMPILATION=0 -o src/assets/main.wasm

That's it for the C code. Let's move on to the JavaScript portion.