v2.0.0b5 (#1312)

- Bump minimum Python version to 3.10
- Better error message if ASGI dependencies are missing
- Removed `reactpy.types.ContextProviderType` top-level export. Use `reactpy.types.ContextProvider` instead.
- Removed `reactpy.types.LayoutType` top-level export. Use `reactpy.types.BaseLayout` instead.
- No longer require a package `name` within `reactjs_component_from_*`
- Remove `pip` dependency
- Convert `orjson` into an ASGI only dependency
- Fix `@reactpy/client`'s dependency path for `event-to-object`
- Fix #1001 
- Fix #624
- Fix #1198
- Fix #1201

Author: Archmonger

.github/copilot-instructions.md

@@ -27,7 +27,7 @@ jobs:
             job-name: "python-{0} {1}"
             run-cmd: "hatch test"
             runs-on: '["ubuntu-latest", "macos-latest", "windows-latest"]'
-            python-version: '["3.10", "3.11", "3.12", "3.13"]'
+            python-version: '["3.11", "3.12", "3.13", "3.14"]'
     test-documentation:
         # Temporarily disabled while we transition from Sphinx to MkDocs
         # https://github.com/reactive-python/reactpy/pull/1052

.github/workflows/check.yml

@@ -1,4 +1,5 @@
 {
   "proseWrap": "never",
-  "trailingComma": "all"
+  "trailingComma": "all",
+  "endOfLine": "auto"
 }

.prettierrc

@@ -0,0 +1 @@
+/cache

.serena/.gitignore

@@ -0,0 +1,8 @@
+# Code Style & Conventions
+
+- **Formatting**: Enforced by `hatch fmt`.
+- **Type Hints**: Required, checked by `hatch run python:type_check`.
+- **JS Linting**: Enforced by `hatch run javascript:check`.
+- **Tests**: All tests must pass. Failures not allowed.
+- **Documentation**: Must be updated with code changes.
+- **Changelog**: Required for significant changes.

.serena/memories/code_style.md

@@ -0,0 +1,12 @@
+# Development Workflow
+
+1. **Bootstrap**: Install Python 3.9+, Hatch, Bun.
+2. **Changes**: Modify code.
+3. **Format**: `hatch fmt`.
+4. **Type Check**: `hatch run python:type_check`.
+5. **JS Check**: `hatch run javascript:check` (if JS changed).
+6. **Test**: `hatch test`.
+7. **Validate**: Manual component/server tests.
+8. **Build JS**: `hatch run javascript:build` (if JS changed).
+9. **Docs**: Update if Python source changed.
+10. **Changelog**: Add entry in `docs/source/about/changelog.rst`.

.serena/memories/development_workflow.md

@@ -0,0 +1,16 @@
+# ReactPy Overview
+
+## Purpose
+ReactPy builds UIs in Python without JS, using React-like components and a Python-to-JS bridge.
+
+## Tech Stack
+- **Python**: 3.9+
+- **Build**: Hatch
+- **JS Runtime**: Bun
+- **Deps**: fastjsonschema, requests, lxml, anyio
+
+## Structure
+- `src/reactpy/`: Python source (core, web, executors).
+- `src/js/`: JS packages (client, app).
+- `tests/`: Test suite.
+- `docs/`: Documentation.

.serena/memories/project_overview.md

@@ -0,0 +1,17 @@
+# Suggested Commands (Hatch)
+
+## Python
+- **Test**: `hatch test` (All must pass)
+- **Coverage**: `hatch test --cover`
+- **Format**: `hatch fmt`
+- **Check Format**: `hatch fmt --check`
+- **Type Check**: `hatch run python:type_check`
+- **Build**: `hatch build --clean`
+
+## JavaScript
+- **Build**: `hatch run javascript:build` (Rebuild after JS changes)
+- **Check**: `hatch run javascript:check`
+- **Fix**: `hatch run javascript:fix`
+
+## Shell
+- **Dev Shell**: `hatch shell`

.serena/memories/suggested_commands.md

@@ -0,0 +1,84 @@
+# list of languages for which language servers are started; choose from:
+#   al               bash             clojure          cpp              csharp           csharp_omnisharp
+#   dart             elixir           elm              erlang           fortran          go
+#   haskell          java             julia            kotlin           lua              markdown
+#   nix              perl             php              python           python_jedi      r
+#   rego             ruby             ruby_solargraph  rust             scala            swift
+#   terraform        typescript       typescript_vts   yaml             zig
+# Note:
+#   - For C, use cpp
+#   - For JavaScript, use typescript
+# Special requirements:
+#   - csharp: Requires the presence of a .sln file in the project folder.
+# When using multiple languages, the first language server that supports a given file will be used for that file.
+# The first language is the default language and the respective language server will be used as a fallback.
+# Note that when using the JetBrains backend, language servers are not used and this list is correspondingly ignored.
+languages:
+- python
+
+# the encoding used by text files in the project
+# For a list of possible encodings, see https://docs.python.org/3.11/library/codecs.html#standard-encodings
+encoding: "utf-8"
+
+# whether to use the project's gitignore file to ignore files
+# Added on 2025-04-07
+ignore_all_files_in_gitignore: true
+
+# list of additional paths to ignore
+# same syntax as gitignore, so you can use * and **
+# Was previously called `ignored_dirs`, please update your config if you are using that.
+# Added (renamed) on 2025-04-07
+ignored_paths: []
+
+# whether the project is in read-only mode
+# If set to true, all editing tools will be disabled and attempts to use them will result in an error
+# Added on 2025-04-18
+read_only: false
+
+# list of tool names to exclude. We recommend not excluding any tools, see the readme for more details.
+# Below is the complete list of tools for convenience.
+# To make sure you have the latest list of tools, and to view their descriptions, 
+# execute `uv run scripts/print_tool_overview.py`.
+#
+#  * `activate_project`: Activates a project by name.
+#  * `check_onboarding_performed`: Checks whether project onboarding was already performed.
+#  * `create_text_file`: Creates/overwrites a file in the project directory.
+#  * `delete_lines`: Deletes a range of lines within a file.
+#  * `delete_memory`: Deletes a memory from Serena's project-specific memory store.
+#  * `execute_shell_command`: Executes a shell command.
+#  * `find_referencing_code_snippets`: Finds code snippets in which the symbol at the given location is referenced.
+#  * `find_referencing_symbols`: Finds symbols that reference the symbol at the given location (optionally filtered by type).
+#  * `find_symbol`: Performs a global (or local) search for symbols with/containing a given name/substring (optionally filtered by type).
+#  * `get_current_config`: Prints the current configuration of the agent, including the active and available projects, tools, contexts, and modes.
+#  * `get_symbols_overview`: Gets an overview of the top-level symbols defined in a given file.
+#  * `initial_instructions`: Gets the initial instructions for the current project.
+#     Should only be used in settings where the system prompt cannot be set,
+#     e.g. in clients you have no control over, like Claude Desktop.
+#  * `insert_after_symbol`: Inserts content after the end of the definition of a given symbol.
+#  * `insert_at_line`: Inserts content at a given line in a file.
+#  * `insert_before_symbol`: Inserts content before the beginning of the definition of a given symbol.
+#  * `list_dir`: Lists files and directories in the given directory (optionally with recursion).
+#  * `list_memories`: Lists memories in Serena's project-specific memory store.
+#  * `onboarding`: Performs onboarding (identifying the project structure and essential tasks, e.g. for testing or building).
+#  * `prepare_for_new_conversation`: Provides instructions for preparing for a new conversation (in order to continue with the necessary context).
+#  * `read_file`: Reads a file within the project directory.
+#  * `read_memory`: Reads the memory with the given name from Serena's project-specific memory store.
+#  * `remove_project`: Removes a project from the Serena configuration.
+#  * `replace_lines`: Replaces a range of lines within a file with new content.
+#  * `replace_symbol_body`: Replaces the full definition of a symbol.
+#  * `restart_language_server`: Restarts the language server, may be necessary when edits not through Serena happen.
+#  * `search_for_pattern`: Performs a search for a pattern in the project.
+#  * `summarize_changes`: Provides instructions for summarizing the changes made to the codebase.
+#  * `switch_modes`: Activates modes by providing a list of their names
+#  * `think_about_collected_information`: Thinking tool for pondering the completeness of collected information.
+#  * `think_about_task_adherence`: Thinking tool for determining whether the agent is still on track with the current task.
+#  * `think_about_whether_you_are_done`: Thinking tool for determining whether the task is truly completed.
+#  * `write_memory`: Writes a named memory (for future reference) to Serena's project-specific memory store.
+excluded_tools: []
+
+# initial prompt for the project. It will always be given to the LLM upon activating the project
+# (contrary to the memories, which are loaded on demand).
+initial_prompt: ""
+
+project_name: "reactpy"
+included_optional_tools: []

.serena/project.yml

@@ -17,44 +17,49 @@ Unreleased
 
 **Added**
 
+- :pull:`1113` - Added support for Python 3.12, 3.13, and 3.14.
+- :pull:`1281` - Added type hints to ``reactpy.html`` attributes.
+- :pull:`1285` - Added support for nested components in web modules
+- :pull:`1289` - Added support for inline JavaScript as event handlers or other attributes that expect a callable via ``reactpy.types.InlineJavaScript``
+- :pull:`1308` - Event functions can now call ``event.preventDefault()`` and ``event.stopPropagation()`` methods directly on the event data object, rather than using the ``@event`` decorator.
+- :pull:`1308` - Event data now supports accessing properties via dot notation (ex. ``event.target.value``).
+- :pull:`1308` - Added ``reactpy.types.Event`` to provide type hints for the standard ``data`` function argument (for example ``def on_click(event: Event): ...``).
+- :pull:`1113` - Added ``asgi`` and ``jinja`` installation extras (for example ``pip install reactpy[asgi, jinja]``).
+- :pull:`1267` - Added ``shutdown_timeout`` parameter to the ``reactpy.use_async_effect`` hook.
 - :pull:`1113` - Added ``reactpy.executors.asgi.ReactPy`` that can be used to run ReactPy in standalone mode via ASGI.
 - :pull:`1269` - Added ``reactpy.executors.asgi.ReactPyCsr`` that can be used to run ReactPy in standalone mode via ASGI, but rendered entirely client-sided.
 - :pull:`1113` - Added ``reactpy.executors.asgi.ReactPyMiddleware`` that can be used to utilize ReactPy within any ASGI compatible framework.
 - :pull:`1269` - Added ``reactpy.templatetags.ReactPyJinja`` that can be used alongside ``ReactPyMiddleware`` to embed several ReactPy components into your existing application. This includes the following template tags: ``{% component %}``, ``{% pyscript_component %}``, and ``{% pyscript_setup %}``.
 - :pull:`1269` - Added ``reactpy.pyscript_component`` that can be used to embed ReactPy components into your existing application.
-- :pull:`1113` - Added ``asgi`` and ``jinja`` installation extras (for example ``pip install reactpy[asgi, jinja]``).
-- :pull:`1113` - Added support for Python 3.12 and 3.13.
 - :pull:`1264` - Added ``reactpy.use_async_effect`` hook.
-- :pull:`1267` - Added ``shutdown_timeout`` parameter to the ``reactpy.use_async_effect`` hook.
-- :pull:`1281` - ``reactpy.html`` will now automatically flatten lists recursively (ex. ``reactpy.html(["child1", ["child2"]])``)
 - :pull:`1281` - Added ``reactpy.Vdom`` primitive interface for creating VDOM dictionaries.
-- :pull:`1281` - Added type hints to ``reactpy.html`` attributes.
-- :pull:`1285` - Added support for nested components in web modules
-- :pull:`1289` - Added support for inline JavaScript as event handlers or other attributes that expect a callable via ``reactpy.types.InlineJavaScript``
 - :pull:`1307` - Added ``reactpy.web.reactjs_component_from_file`` to import ReactJS components from a file.
 - :pull:`1307` - Added ``reactpy.web.reactjs_component_from_url`` to import ReactJS components from a URL.
 - :pull:`1307` - Added ``reactpy.web.reactjs_component_from_string`` to import ReactJS components from a string.
-- :pull:`1308` - Event functions can now call ``event.preventDefault()`` and ``event.stopPropagation()`` methods directly on the event data object, rather than using the ``@event`` decorator.
-- :pull:`1308` - Event data now supports accessing properties via dot notation (ex. ``event.target.value``).
 
 **Changed**
 
 - :pull:`1251` - Substitute client-side usage of ``react`` with ``preact``.
-- :pull:`1239` - Script elements no longer support behaving like effects. They now strictly behave like plain HTML script elements.
+- :pull:`1239` - Script elements no longer support behaving like effects. They now strictly behave like plain HTML scripts.
 - :pull:`1255` - The ``reactpy.html`` module has been modified to allow for auto-creation of any HTML nodes. For example, you can create a ``<data-table>`` element by calling ``html.data_table()``.
 - :pull:`1256` - Change ``set_state`` comparison method to check equality with ``==`` more consistently.
 - :pull:`1257` - Add support for rendering ``@component`` children within ``vdom_to_html``.
 - :pull:`1113` - Renamed the ``use_location`` hook's ``search`` attribute to ``query_string``.
 - :pull:`1113` - Renamed the ``use_location`` hook's ``pathname`` attribute to ``path``.
 - :pull:`1113` - Renamed ``reactpy.config.REACTPY_DEBUG_MODE`` to ``reactpy.config.REACTPY_DEBUG``.
-- :pull:`1113` - ``@reactpy/client`` now exports ``React`` and ``ReactDOM``.
 - :pull:`1263` - ReactPy no longer auto-converts ``snake_case`` props to ``camelCase``. It is now the responsibility of the user to ensure that props are in the correct format.
+- :pull:`1196` - Rewrite the ``event-to-object`` package to be more robust at handling properties on events.
+- :pull:`1312` - Custom JS components will now automatically assume you are using ReactJS in the absence of a ``bind`` function.
+- :pull:`1312` - Refactor layout rendering logic to improve readability and maintainability.
+- :pull:`1113` - ``@reactpy/client`` now exports ``React`` and ``ReactDOM``.
+- :pull:`1281` - ``reactpy.html`` will now automatically flatten lists recursively (ex. ``reactpy.html(["child1", ["child2"]])``)
 - :pull:`1278` - ``reactpy.utils.reactpy_to_string`` will now retain the user's original casing for ``data-*`` and ``aria-*`` attributes.
 - :pull:`1278` - ``reactpy.utils.string_to_reactpy`` has been upgraded to handle more complex scenarios without causing ReactJS rendering errors.
 - :pull:`1281` - ``reactpy.core.vdom._CustomVdomDictConstructor`` has been moved to ``reactpy.types.CustomVdomConstructor``.
 - :pull:`1281` - ``reactpy.core.vdom._EllipsisRepr`` has been moved to ``reactpy.types.EllipsisRepr``.
 - :pull:`1281` - ``reactpy.types.VdomDictConstructor`` has been renamed to ``reactpy.types.VdomConstructor``.
-- :pull:`1196` - Rewrite the ``event-to-object`` package to be more robust at handling properties on events.
+- :pull:`1312` - ``REACTPY_ASYNC_RENDERING`` can now de-duplicate and cascade renders where necessary.
+- :pull:`1312` - ``REACTPY_ASYNC_RENDERING`` is now defaulted to ``True`` for up to 40x performance improvements.
 
 **Deprecated**
 
@@ -63,10 +68,15 @@ Unreleased
 -:pull:`1307` - ``reactpy.web.module_from_url`` is deprecated. Use ``reactpy.web.reactjs_component_from_url`` instead.
 -:pull:`1307` - ``reactpy.web.module_from_string`` is deprecated. Use ``reactpy.web.reactjs_component_from_string`` instead.
 
-
 **Removed**
 
+- :pull:`1113` - Removed support for Python 3.9 and 3.10.
 - :pull:`1255` - Removed the ability to import ``reactpy.html.*`` elements directly. You must now call ``html.*`` to access the elements.
+- :pull:`1113` - Removed backend specific installation extras (such as ``pip install reactpy[starlette]``).
+- :pull:`1264` - Removed support for async functions within ``reactpy.use_effect`` hook. Use ``reactpy.use_async_effect`` instead.
+- :pull:`1113` - Removed deprecated function ``module_from_template``.
+- :pull:`1311` - Removed deprecated exception type ``reactpy.core.serve.Stop``.
+- :pull:`1311` - Removed deprecated component ``reactpy.widgets.hotswap``.
 - :pull:`1255` - Removed ``reactpy.sample`` module.
 - :pull:`1255` - Removed ``reactpy.svg`` module. Contents previously within ``reactpy.svg.*`` can now be accessed via ``html.svg.*``.
 - :pull:`1255` - Removed ``reactpy.html._`` function. Use ``html.fragment`` instead.
@@ -75,24 +85,21 @@ Unreleased
 - :pull:`1113` - Removed ``reactpy.core.types`` module. Use ``reactpy.types`` instead.
 - :pull:`1278` - Removed ``reactpy.utils.html_to_vdom``. Use ``reactpy.utils.string_to_reactpy`` instead.
 - :pull:`1278` - Removed ``reactpy.utils.vdom_to_html``. Use ``reactpy.utils.reactpy_to_string`` instead.
-- :pull:`1113` - Removed backend specific installation extras (such as ``pip install reactpy[starlette]``).
-- :pull:`1113` - Removed deprecated function ``module_from_template``.
-- :pull:`1113` - Removed support for Python 3.9.
-- :pull:`1264` - Removed support for async functions within ``reactpy.use_effect`` hook. Use ``reactpy.use_async_effect`` instead.
 - :pull:`1281` - Removed ``reactpy.vdom``. Use ``reactpy.Vdom`` instead.
 - :pull:`1281` - Removed ``reactpy.core.make_vdom_constructor``. Use ``reactpy.Vdom`` instead.
 - :pull:`1281` - Removed ``reactpy.core.custom_vdom_constructor``. Use ``reactpy.Vdom`` instead.
-- :pull:`1311` - Removed ``reactpy.core.serve.Stop`` type due to extended deprecation.
-- :pull:`1311` - Removed ``reactpy.Layout`` top-level export. Use ``reactpy.core.layout.Layout`` instead.
-- :pull:`1311` - Removed ``reactpy.widgets.hotswap`` due to extended deprecation.
-
+- :pull:`1311` - Removed ``reactpy.Layout`` top-level re-export. Use ``reactpy.core.layout.Layout`` instead.
+- :pull:`1312` - Removed ``reactpy.types.LayoutType``. Use ``reactpy.types.BaseLayout`` instead.
+- :pull:`1312` - Removed ``reactpy.types.ContextProviderType``. Use ``reactpy.types.ContextProvider`` instead.
+- :pull:`1312` - Removed ``reactpy.core.hooks._ContextProvider``. Use ``reactpy.types.ContextProvider`` instead.
 
 **Fixed**
 
 - :pull:`1239` - Fixed a bug where script elements would not render to the DOM as plain text.
 - :pull:`1271` - Fixed a bug where the ``key`` property provided within server-side ReactPy code was failing to propagate to the front-end JavaScript components.
 - :pull:`1254` - Fixed a bug where ``RuntimeError("Hook stack is in an invalid state")`` errors could be generated when using a webserver that reuses threads.
 
+
 v1.1.0
 ------
 :octicon:`milestone` *released on 2024-11-24*
@@ -102,7 +109,7 @@ v1.1.0
 - :pull:`1118` - ``module_from_template`` is broken with a recent release of ``requests``
 - :pull:`1131` - ``module_from_template`` did not work when using Flask backend
 - :pull:`1200` - Fixed ``UnicodeDecodeError`` when using ``reactpy.web.export``
-- :pull:`1224` - Fixes needless unmounting of JavaScript components during each ReactPy render.
+- :pull:`1224` - Fixed needless unmounting of JavaScript components during each ReactPy render.
 - :pull:`1126` - Fixed missing ``event["target"]["checked"]`` on checkbox inputs
 - :pull:`1191` - Fixed missing static files on `sdist` Python distribution