v2 and v3 seem to work fine with Deno, although our test runner ava does not so we can not yet run the full Eleventy test suite.

deno --allow-read --allow-write npm:@11ty/eleventy
deno --allow-read --allow-write npm:@11ty/eleventy@canary
deno --allow-read --allow-write npm:@11ty/eleventy@canary

Noting that --allow-write is only necessary when using --to=fs (not --dryrun).

These additional permissions are requested:

• env access
• node:os.cpus() via fs.walk and fast-glob replaced in Replace glob packages with lighter alternatives – fast-glob + is-glob -> tinyglobby, micromatch -> picomatch #3680

Can we reduce some of these?