Deno coverage

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We updated deno coverage in 1.39 with a better output and HTML generation.

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If you're using deno test, have you checked out deno coverage?

deno coverage is a great way to see how much test coverage you have, just add the coverage flag to Deno test:

deno test --coverage

This will save coverage data to /coverage. Then run the coverage command:

deno coverage ./coverage

to see a coverage report.

In Deno 1.39, deno coverage was updated in two ways; first it now outputs a concise summary table and second, if you add the --html flag:

deno coverage ./coverage --html

the coverage tool generates static HTML so that you can explore your coverage in a browser.

We got more plans for Deno coverage, like simplifying the steps into a single command and more.