FromJson Desk - notice
======================

FromJson Desk (https://fromjson-desk.skillsafe.ai/) is a web app derived from the agent skill
@flutter/flutter-implement-json-serialization, published by the Flutter team in the repository
flutter/skills (now https://github.com/flutter/agent-plugins; the skill lives at
skills/flutter-implement-json-serialization/SKILL.md) under the BSD 3-Clause licence below. The
skill teaches manual JSON serialization with dart:convert: plain model classes with final
fields, a factory fromJson constructor (its example uses a Dart 3 switch over a map pattern), a
toJson method, casting jsonDecode's result, throwing on a failed HTTP status, and compute() for
large payloads. The app's system prompt, its JSON reader, its model generator and its checker
are new work written for this app; no text of the skill is reproduced.

dartkit.js contains one regular expression copied from the Dart SDK (lib/core/date_time.dart,
DateTime._parseFormat), so that the page accepts exactly the strings DateTime.parse accepts. The
Dart SDK is distributed under the BSD 3-Clause licence reproduced at the end of this notice.

The behaviour the checker models (int versus double from jsonDecode, map patterns, casts, the
web's number representation, DateTime.parse and jsonEncode) was observed by running code on the
Dart 3.13.4 VM and on the same code compiled with dart2js, and is documented by the Dart team:
- https://api.dart.dev/dart-convert/jsonDecode.html
- https://dart.dev/language/patterns
- https://dart.dev/resources/language/number-representation
- https://api.dart.dev/dart-core/DateTime/parse.html
- https://docs.flutter.dev/data-and-backend/serialization/json

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flutter/skills (flutter/agent-plugins) licence
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Copyright 2026 The Flutter Authors. All rights reserved.

Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this
   list of conditions and the following disclaimer.

2. Redistributions in binary form must reproduce the above copyright notice,
   this list of conditions and the following disclaimer in the documentation
   and/or other materials provided with the distribution.

3. Neither the name of the copyright holder nor the names of its contributors
   may be used to endorse or promote products derived from this software without
   specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

------------------------------------------------------------------------------------------------
Dart SDK licence (for the DateTime.parse regular expression in dartkit.js)
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Copyright 2012, the Dart project authors.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above
      copyright notice, this list of conditions and the following
      disclaimer in the documentation and/or other materials provided
      with the distribution.
    * Neither the name of Google LLC nor the names of its
      contributors may be used to endorse or promote products derived
      from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.