deno-cava

cava CLI bindings to Deno:

import { streamLines } from "https://deno.land/x/cava/mod.ts";

// deno-cava uses async iterators to stream the output of cava.
for await (const line of streamLines()) {
  // format each number in the array as a 6 digit number (leading zeros)
  const formatted = [...line].map((n) => n.toString().padStart(6, "0")).join(
    " ",
  );
  console.log(formatted);
}

permissions

This requires write access to /tmp (for storing the config file) and run access to cava:

deno run --allow-write=/tmp --allow-run=cava https://deno.land/x/cava/mod.ts

contributing

Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.

To run the demos, use the tasks provided in tasks.json:

deno task example:display # sideways visualizer

deno task example:numeral # display numbers corresponding to the frequency bands