Cleaning

The clean option controls whether Packem empties the output directory before each build, so that stale artifacts from previous builds are not left behind.

import { defineConfig } from '@visulima/packem/config'

export default defineConfig({
  clean: true,
})

Default

clean defaults to true — the output directory is cleaned before every build.

Disabling cleaning

Set clean: false to keep existing files in the output directory:

export default defineConfig({
  clean: false,
})

CLI flag

There is a --no-clean flag on packem build that disables cleaning for a single build without editing the config file:

packem build --no-clean

The flag is described as "Do not clean the dist directory before building". There is no separate --clean flag — cleaning is on by default, and --no-clean opts out.

Related Options

• Output Directory - Where build artifacts are written
• Watch Mode - Rebuild on file changes