toml-rs/test-suite/tests/valid/key-empty.json

{
  "": {"type": "integer", "value": "1"}
}
Allow empty table keys Quoting https://github.com/toml-lang/toml/tree/68076ffc6d9a150d48f1df964551283542ad47bc#user-content-keys > A bare key must be non-empty, but an empty quoted key is allowed (though discouraged). See also the discussion in https://github.com/toml-lang/toml/issues/432 2020-01-31 00:35:15 -06:00			`{`
			`"": {"type": "integer", "value": "1"}`
			`}`