fix(deno):tsc error and deno warnings

[rivy]

The current version causes Deno to report warnings when imported.
This PR pins the version to the current Deno std (0.159.0) and removes the warnings.

$ deno run -r deno.ts
Warning Implicitly using latest version (0.159.0) for https://deno.land/std/fmt/printf.ts
Warning Implicitly using latest version (0.159.0) for https://deno.land/std/path/mod.ts

$ git checkout fix.deno
Previous HEAD position was 7456792 fix: TypeScript compiler error (Object is 'unknown')
Switched to a new branch 'fix.deno'
Branch 'fix.deno' set up to track remote branch 'fix.deno' from 'origin'.

$ npm run compile
$ deno run -r deno.ts

[rivy]

@bcoe, review?

[bcoe]

@rivy this looks good to me, but I believe we'll have to fix the build process before we can land. I believe this fix is that rollup needs to be updated.

[rivy]

I added a commit with the minimal change to fix rollup compilation error.

[bcoe]

@rivy thank you for the contribution.