denoland-deno/tests/specs/add/missing_prefix/__test__.jsonc

{
  "tempDir": true,
  "steps": [
    {
      "args": "add ajv",
      "output": "error: ajv is missing a prefix. Did you mean `deno add npm:ajv`?\n",
      "exitCode": 1
    },
    {
      "args": "add @std/testing",
      "output": "error: @std/testing is missing a prefix. Did you mean `deno add jsr:@std/testing`?\n",
      "exitCode": 1
    }
  ]
}