remove previously deprecated code

CHANGES.rst

@@ -3,6 +3,24 @@ Version 2.3.0
 
 Unreleased
 
+-   Remove previously deprecated code. :pr:`4995`
+
+    -   The ``push`` and ``pop`` methods of the deprecated ``_app_ctx_stack`` and
+        ``_request_ctx_stack`` objects are removed. ``top`` still exists to give
+        extensions more time to update, but it will be removed.
+    -   The ``FLASK_ENV`` environment variable, ``ENV`` config key, and ``app.env``
+        property are removed.
+    -   The ``session_cookie_name``, ``send_file_max_age_default``, ``use_x_sendfile``,
+        ``propagate_exceptions``, and ``templates_auto_reload`` properties on ``app``
+        are removed.
+    -   The ``JSON_AS_ASCII``, ``JSON_SORT_KEYS``, ``JSONIFY_MIMETYPE``, and
+        ``JSONIFY_PRETTYPRINT_REGULAR`` config keys are removed.
+    -   The ``app.before_first_request`` and ``bp.before_app_first_request`` decorators
+        are removed.
+    -   ``json_encoder`` and ``json_decoder`` attributes on app and blueprint, and the
+        corresponding ``json.JSONEncoder`` and ``JSONDecoder`` classes, are removed.
+    -   The ``json.htmlsafe_dumps`` and ``htmlsafe_dump`` functions are removed.
+
 -   Use modern packaging metadata with ``pyproject.toml`` instead of ``setup.cfg``.
     :pr:`4947`
 -   Ensure subdomains are applied with nested blueprints. :issue:`4834`

docs/api.rst

@@ -270,12 +270,6 @@ HTML ``<script>`` tags.
     :members:
     :member-order: bysource
 
-.. autoclass:: JSONEncoder
-   :members:
-
-.. autoclass:: JSONDecoder
-   :members:
-
 .. automodule:: flask.json.tag
 
 

docs/config.rst

@@ -65,18 +65,6 @@ Builtin Configuration Values
 
 The following configuration values are used internally by Flask:
 
-.. py:data:: ENV
-
-    What environment the app is running in. The :attr:`~flask.Flask.env` attribute maps
-    to this config key.
-
-    Default: ``'production'``
-
-    .. deprecated:: 2.2
-        Will be removed in Flask 2.3. Use ``--debug`` instead.
-
-    .. versionadded:: 1.0
-
 .. py:data:: DEBUG
 
     Whether debug mode is enabled. When using ``flask run`` to start the development
@@ -271,52 +259,6 @@ The following configuration values are used internally by Flask:
 
     Default: ``None``
 
-.. py:data:: JSON_AS_ASCII
-
-    Serialize objects to ASCII-encoded JSON. If this is disabled, the
-    JSON returned from ``jsonify`` will contain Unicode characters. This
-    has security implications when rendering the JSON into JavaScript in
-    templates, and should typically remain enabled.
-
-    Default: ``True``
-
-    .. deprecated:: 2.2
-        Will be removed in Flask 2.3. Set ``app.json.ensure_ascii``
-        instead.
-
-.. py:data:: JSON_SORT_KEYS
-
-    Sort the keys of JSON objects alphabetically. This is useful for caching
-    because it ensures the data is serialized the same way no matter what
-    Python's hash seed is. While not recommended, you can disable this for a
-    possible performance improvement at the cost of caching.
-
-    Default: ``True``
-
-    .. deprecated:: 2.2
-        Will be removed in Flask 2.3. Set ``app.json.sort_keys``
-        instead.
-
-.. py:data:: JSONIFY_PRETTYPRINT_REGULAR
-
-    :func:`~flask.jsonify` responses will be output with newlines,
-    spaces, and indentation for easier reading by humans. Always enabled
-    in debug mode.
-
-    Default: ``False``
-
-    .. deprecated:: 2.2
-        Will be removed in Flask 2.3. Set ``app.json.compact`` instead.
-
-.. py:data:: JSONIFY_MIMETYPE
-
-    The mimetype of ``jsonify`` responses.
-
-    Default: ``'application/json'``
-
-    .. deprecated:: 2.2
-        Will be removed in Flask 2.3. Set ``app.json.mimetype`` instead.
-
 .. py:data:: TEMPLATES_AUTO_RELOAD
 
     Reload templates when they are changed. If not set, it will be enabled in
@@ -381,14 +323,13 @@ The following configuration values are used internally by Flask:
 .. versionchanged:: 2.2
     Removed ``PRESERVE_CONTEXT_ON_EXCEPTION``.
 
-.. versionchanged:: 2.2
-    ``JSON_AS_ASCII``, ``JSON_SORT_KEYS``,
-    ``JSONIFY_MIMETYPE``, and ``JSONIFY_PRETTYPRINT_REGULAR`` will be
-    removed in Flask 2.3. The default ``app.json`` provider has
+.. versionchanged:: 2.3
+    ``JSON_AS_ASCII``, ``JSON_SORT_KEYS``, ``JSONIFY_MIMETYPE``, and
+    ``JSONIFY_PRETTYPRINT_REGULAR`` were removed. The default ``app.json`` provider has
     equivalent attributes instead.
 
-.. versionchanged:: 2.2
-    ``ENV`` will be removed in Flask 2.3. Use ``--debug`` instead.
+.. versionchanged:: 2.3
+    ``ENV`` was removed.
 
 
 Configuring from Python Files

src/flask/__init__.py

@@ -51,7 +51,7 @@ def __getattr__(name):
         from .globals import __app_ctx_stack
 
         warnings.warn(
-            "'_app_ctx_stack' is deprecated and will be removed in Flask 2.3.",
+            "'_app_ctx_stack' is deprecated and will be removed in Flask 2.4.",
             DeprecationWarning,
             stacklevel=2,
         )
@@ -62,7 +62,7 @@ def __getattr__(name):
         from .globals import __request_ctx_stack
 
         warnings.warn(
-            "'_request_ctx_stack' is deprecated and will be removed in Flask 2.3.",
+            "'_request_ctx_stack' is deprecated and will be removed in Flask 2.4.",
             DeprecationWarning,
             stacklevel=2,
         )