# Building your project
We've written our code so now we need to build it.
We are writing a crate that should be used in the browser, so we run this in
our terminal:
```bash
$ wasm-pack build
```
If you were writing a package that should be used in Node.js (with CommonJS
modules, e.g. `require`), you would run this in your terminal:
```bash
$ wasm-pack build --target nodejs
```
This command when run does a few things:
1. It'll compile your code to wasm if you haven't already
2. It'll generate a `pkg` folder with the wasm file, a JS wrapper file around
the wasm, your README, and a `package.json` file.