chromium/third_party/blink/renderer/build/scripts/tests/json5_generator_invalid_key.json5

{
  parameters: {
    param1: {
      valid_values: ["valid", "values"],
      valid_keys: ["random", "keys"],
    }
  },

  data: [
    {
      name: "item1",
      param1: {"not_valid_key": "valid", "random": "values"},
    },
  ],
}