Use the eslint rule
"no-var": "error"
in resources/.eslintrc.json and in .eslintrc.json
to require the use of `const` and `let` instead of `var`.
Bug: T337102
Change-Id: I3b3d6d426966a97c13f62494443f62bd5b790920
* Removed deprecated testCount, which is no longer supported in this way.
It's only useful when wanting to explicitly expect 0 assertions (normally
considered an error).
* Replaced use of testCount = 0, with assert.expect( 0 ).
Change-Id: I8fe82032d3af2a1ad2ed7febdb90a95d56dd3fc4
