cheatsheets/jscoverage.md

title	layout
jscoverage	default

Install

npm install --save-dev jscoverage

Ignore output

echo coverage.html >> .gitignore

package.json

The coverage task injects your source files (lib) with jscoverage hooks, runs mocha -R html-cov, then restores later.

"coverage": "./node_modules/.bin/jscoverage lib && (mv lib lib~; mv lib-cov lib; ./node_modules/.bin/mocha -R html-cov > coverage.html; mv -f lib~ lib)"

Run

npm run coverage
open coverage.html

Caveats

If you're using jsdom, be sure to expose the window._$jscoverage variable into the global scope.