`sw-debug.js` is included in build output when building with option `--no-sw`

[RonnyLV]

Do you want to request a feature or report a bug?
Bug

What is the current behaviour?
sw-debug.js is included in build output when building with option --no-sw

If the current behaviour is a bug, please provide the steps to reproduce.

What is the expected behaviour?
No sw-debug.js in build output with --no-sw enabled

Environment Info:
  System:
    OS: Linux 5.4 Alpine Linux
    CPU: (8) x64 Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz
  Binaries:
    Node: 14.15.1 - /usr/local/bin/node
    Yarn: 1.22.5 - /usr/local/bin/yarn
    npm: 6.14.8 - /usr/local/bin/npm
  npmPackages:
    preact: ^10.3.1 => 10.5.7 
    preact-cli: 3.0.3 => 3.0.3 
    preact-render-to-string: ^5.1.4 => 5.1.12 
  npmGlobalPackages:
    preact-cli: 3.0.3

[rschristian]

The SW will be copied to the output directory but won't be registered.

We can probably exclude it but there would be no change in functionality.

I'll look at writing something up to keep it out, but in the meantime, just add && rm build/sw-debug.js if you really don't want it.