follow up on PR review suggestions about esmock

[iambumblehead]

something like this is working here

npm run test-cover | tee results.txt
cat results.txt | grep -oP "All\ files[^\d]*(\d\d?\.?\d?\d?)" | grep -oP "(\d\d?\.?\d?\d?)$"
npm run test-cover | tee >(grep -oP "All\ files[^\d]*(\d\d?\.?\d?\d?)" | grep -oP "(\d\d?\.?\d?\d?)$")

wow this works, credit to this Mr Davisson

{ PER=$(npm run test-cover | tee /dev/fd/3 | grep -oP "All\ files[^\d]*(\d\d?\.?\d?\d?)" | grep -oP "(\d\d?\.?\d?\d?)$"); } 3>&1

[iambumblehead]

closing this because most of the "higher priority" items listed have been taken care of

[iambumblehead]

current list of things to do

• add CONTRIBUTING with instructions for setting up and running tests
• (wiki) join multi-line mock examples near bottom of wiki
• (wiki) add partial mocking to wiki
• (wiki) add note about package resolution https://nodejs.org/api/packages.html#exports
• (wiki) remove node about node16

[iambumblehead]

• update module.exports for package.json per form-urlencoded
• add % sign to coverage badge label
• convert npm badge to shields or same format as other badges, get same smaller label and font
• add CONTRIBUTING
• remove un-needed parens from resolve condition