This produces an async iterable for searching through the provided patterns relative to the cwd. If cwd is left blank then it defaults to Deno.cwd().

import { globber } from 'https://deno.land/x/globber/mod.ts';

for await (const entry of globber({ extensions: ['.jsonc', '.json'] })) {
  const contents = await Deno.readTextFile(entry.absolute);
  const json = JSON.parse(contents);

  if (json.name === "amazing") {
    // do something
    break;
  }
}