create-solana-program/template/base/scripts/program/clean.mjs

#!/usr/bin/env zx
import 'zx/globals';
import { getExternalProgramOutputDir } from '../utils.mjs';

// Remove the programs output directories.
const externalProgramOutput = getExternalProgramOutputDir();
await $`rm -rf ${externalProgramOutput}`;

// Remove the target directory.
await $`rm -rf target`;