Taskfile.ts for Deno

Taskfile.ts

/* To use Taskfile, it's recommended that you alias this to your shell: 

Unix: alias deno-task='deno run --allow-run $(git rev-parse --show-toplevel)/Taskfile.ts'
Windows PowerShell: Set-Alias -Name deno-task -Value deno run --allow-run ./Taskfile.ts

Thanks to https://dev.to/vonheikemen/a-simple-way-to-replace-npm-scripts-in-deno-4j0g for this idea.
*/
type DenoTask = (...args: any[]) => Promise<Deno.ProcessStatus>

function run(
  [name, ...args]: string[],
  tasks: Record<string, DenoTask>
): void {
  if (tasks[name]) {
    tasks[name](...args);
  } else {
    console.log(`Task "${name}" not found`);
  }
}

async function exec(args: string[]) {
  const proc = await Deno.run({ cmd: args }).status();

  if (proc.success == false) {
    Deno.exit(proc.code);
  }

  return proc;
}

run(Deno.args, {
  test: () => exec(`deno test --allow-env`.split(" ")),
  docs: () =>
    exec(
      `deno run --allow-read --allow-write documentation/createDocumentation.ts`.split(
        " "
      )
    ),
});