Files not being removed on subsequent compiles

[olsonpm]

Description

Removed components or files within a component do not get removed upon a subsequent compile.

Steps to Reproduce

Steps to reproduce the behavior:

1. clone clay-starter
2. cd app && npm ci && npm run build
   ** npm ci requires npm v5.7
3. view public/js to see article.model.js
4. rm -rf components/article && npm run build
5. view public/js to see article.model.js is still there

Expected Behavior

removed components and files within those components (e.g. kiln.js) should not persist in public/js

Specs

Desktop

• OS: osx
• node v8.9.0
• npm v5.7.0
• claycli version 3.9.1

[pedro-rosario]

Files not being removed on subsequent compiles