denoland-deno/tests/specs/task/invalid_unstable_feature/deno.json

{
  "tasks": {
    "start": "deno run index.js"
  },
  "unstable": [
    "abc",
    "byonm",
    "bare-node-builtins",
    "sloppy-imports",
    "unsafe-proto",
    "webgpu",
    "broadcast-channel",
    "worker-options",
    "cron",
    "kv",
    "ffi",
    "fs",
    "net",
    "http",
    "cba"
  ]
}