Hash imports instead of using a known list

[rchiodo]

For #4852

• Pull request represents a single change (i.e. not fixing disparate/unrelated things in a single PR)
• Title summarizes what is changing
• Has a news entry file (remember to thank yourself!)
• Has sufficient logging.
• Has telemetry for enhancements.
• Unit tests & system/integration tests are added/updated
• Test plan is updated as appropriate
• package-lock.json has been regenerated by running npm install (if dependencies have changed)
• The wiki is updated with any design decisions/details.

[codecov]

Codecov Report

Merging #4860 into master will decrease coverage by 1%.
The diff coverage is 95%.

@@           Coverage Diff           @@
##           master   #4860    +/-   ##
=======================================
- Coverage      62%     62%   -<1%     
=======================================
  Files         373     373            
  Lines       14689   14660    -29     
  Branches     1161    1161            
=======================================
- Hits         9080    9050    -30     
- Misses       5407    5408     +1     
  Partials      202     202

[IanMatthewHuff]