Deno

Use Deno as the default runtime/tooling when the repo contains deno.json/deno.jsonc, uses deno.lock, or scripts/documentation reference deno task, deno run, deno test, etc.

Quick decision rules

• Prefer deno task <name> if the repo defines tasks.
• Use deno add / deno remove to manage dependencies (writes to config).
• Be explicit about permissions for deno run / deno test.

Common operations

Initialize a new project

deno init

Add dependencies (JSR and npm)