​

Local development

To run the code for your challenge locally, you’ll need bun installed. Our test runners use Bun v1.1 (as of May 2024).

The script for your challenge (like ./your_grep.sh) will run your code using this version of bun. It’ll look something like this:

#!/bin/sh

exec bun run app/main.ts "$@"

​

File structure

• The files for your solution are placed in the app/ directory.
• app/main.ts is the entrypoint for the program.

​

Adding more files

You can add more files and directories to app/. The test runner will include them when compiling your code.

For example, if you add a file at app/foo.ts, you could use it like so:

import { foo, bar } from "./foo";

function main() {
  foo(); // Uses the foo function from foo.ts
  bar(); // Uses the bar function from foo.ts
}

Refer to the Bun documentation for additional details.

​

Adding dependencies

You can add dependencies to your project using bun add.

For example, to add zod as a dependency, run the following command:

bun add zod

This will add the following line to your package.json file:

{
  "dependencies": {
    "zod": "^3.0.0"
  }
}

It will also update the bun.lockb file.