From 4cead2718c85d069b60f42d166e4ce3e63a8c133 Mon Sep 17 00:00:00 2001
From: Riad Benguella <benguella@gmail.com>
Date: Tue, 23 Oct 2018 14:42:37 +0100
Subject: [PATCH 1/7] Remove 4.2 deprecated features

---
 components/code-editor/README.md              |  88 -----------
 components/code-editor/editor.js              | 106 -------------
 components/code-editor/index.js               | 115 --------------
 .../test/__snapshots__/editor.js.snap         |   7 -
 components/code-editor/test/editor.js         |  24 ---
 components/index.js                           |   5 -
 lib/client-assets.php                         |   5 -
 package-lock.json                             | 147 ------------------
 package.json                                  |   4 -
 packages/blocks/src/api/index.js              |   2 -
 packages/blocks/src/api/index.native.js       |   2 -
 packages/blocks/src/api/parser.js             |  24 +--
 packages/blocks/src/api/registration.js       |  30 ----
 packages/blocks/src/api/test/registration.js  |  25 ---
 packages/blocks/src/store/actions.js          |  22 ---
 packages/blocks/src/store/selectors.js        |  21 ---
 .../components/src/primitives/svg/index.js    |  15 --
 packages/components/src/tab-panel/index.js    |  10 +-
 .../data/src/plugins/async-generator/index.js |  38 -----
 .../src/plugins/async-generator/middleware.js | 102 ------------
 packages/data/src/plugins/controls/index.js   |  14 --
 packages/data/src/plugins/index.js            |   1 -
 packages/data/src/registry.js                 |   3 +-
 packages/data/src/test/registry.js            |  89 -----------
 .../hooks/components/media-upload/index.js    |  21 +--
 packages/edit-post/src/index.js               |  18 +--
 packages/edit-post/src/store/actions.js       |  39 -----
 packages/edit-post/src/store/selectors.js     |  45 ------
 .../edit-post/src/store/test/selectors.js     |  48 ------
 .../src/components/media-placeholder/index.js |  26 +---
 .../unsaved-changes-warning/index.js          |  19 +--
 .../editor/src/utils/media-upload/index.js    |  21 +--
 .../src/utils/media-upload/media-upload.js    |   4 -
 webpack.config.js                             |  60 +------
 34 files changed, 23 insertions(+), 1177 deletions(-)
 delete mode 100644 components/code-editor/README.md
 delete mode 100644 components/code-editor/editor.js
 delete mode 100644 components/code-editor/index.js
 delete mode 100644 components/code-editor/test/__snapshots__/editor.js.snap
 delete mode 100644 components/code-editor/test/editor.js
 delete mode 100644 components/index.js
 delete mode 100644 packages/data/src/plugins/async-generator/index.js
 delete mode 100644 packages/data/src/plugins/async-generator/middleware.js

diff --git a/components/code-editor/README.md b/components/code-editor/README.md
deleted file mode 100644
index c48c0545aa0b4..0000000000000
--- a/components/code-editor/README.md
+++ /dev/null
@@ -1,88 +0,0 @@
-CodeEditor
-=======
-
-CodeEditor is a React component that provides the user with a code editor
-that has syntax highlighting and linting.
-
-The components acts as a drop-in replacement for a <textarea>, and uses the
-CodeMirror library that is provided as part of WordPress Core.
-
-## Usage
-
-```jsx
-import { CodeEditor } from '@wordpress/components';
-
-function editCode() {
-	return (
-		<CodeEditor
-			value={ '<p>This is some <b>HTML</b> code that will have syntax highlighting!</p>' }
-			onChange={ value => console.log( value ) }
-		/>
-	);
-}
-```
-
-## Props
-
-The component accepts the following props:
-
-### value
-
-The source code to load into the code editor.
-
-- Type: `string`
-- Required: Yes
-
-### focus
-
-Whether or not the code editor should be focused.
-
-- Type: `boolean`
-- Required: No
-
-### onFocus
-
-The function called when the editor is focused.
-
-- Type: `Function`
-- Required: No
-
-### onChange
-
-The function called when the user has modified the source code via the
-editor. It is passed the new value as an argument.
-
-- Type: `Function`
-- Required: No
-
-### settings
-
-The settings object used to initialize the WordPress code editor. The object contains all of the settings for the editor, including specific settings for CodeMirror. This object is passed into `wp.codeEditor.initialize()`. If you do not specify a settings object, `window._wpGutenbergCodeEditorSettings` will be used instead.
-
-If you are extending `window._wpGutenbergCodeEditorSettings` make sure to clone the object using `Object.assign` or something similar instead of modifying it directly so the default settings remain the same.
-
-```
-const settings = Object.assign(  {
-	codemirror: {
-		mode: css,
-		lint: false,
-	} },
-	window._wpGutenbergCodeEditorSetting
-);
-```
-
-- Type: `Object`
-- Required: No
-
-### editorRef
-
-A reference to the instance of CodeMirror initialized when the editor is loaded so that it can be dynamically updated from a parent component.
-
-`editorRef={ ( ref ) => this.editorInstance = ref }`
-
-`this.editorInstance` will contain a full instance of `CodeMirror` which can then be modified or updated from the component it is being reference from using the [CodeMirror API](https://codemirror.net/doc/manual.html#api). For example, to dynamically change the language mode of CodeMirror to CSS you can call:
-
-`this.editorInstance.setOption( 'mode', 'css' );`
-
-- Type `Function`
-- Required: No
diff --git a/components/code-editor/editor.js b/components/code-editor/editor.js
deleted file mode 100644
index 6d0f52b6427f2..0000000000000
--- a/components/code-editor/editor.js
+++ /dev/null
@@ -1,106 +0,0 @@
-/**
- * WordPress dependencies
- */
-import { Component } from '@wordpress/element';
-import { UP, DOWN } from '@wordpress/keycodes';
-
-class CodeEditor extends Component {
-	constructor() {
-		super( ...arguments );
-
-		this.onFocus = this.onFocus.bind( this );
-		this.onBlur = this.onBlur.bind( this );
-		this.onCursorActivity = this.onCursorActivity.bind( this );
-		this.onKeyHandled = this.onKeyHandled.bind( this );
-	}
-
-	componentDidMount() {
-		const settings = this.props.settings || window._wpGutenbergCodeEditorSettings;
-		const instance = wp.codeEditor.initialize( this.textarea, settings );
-		this.editor = instance.codemirror;
-
-		this.editor.on( 'focus', this.onFocus );
-		this.editor.on( 'blur', this.onBlur );
-		this.editor.on( 'cursorActivity', this.onCursorActivity );
-		this.editor.on( 'keyHandled', this.onKeyHandled );
-
-		// Pass a reference to the editor back up.
-		if ( this.props.editorRef ) {
-			this.props.editorRef( this.editor );
-		}
-
-		this.updateFocus();
-	}
-
-	componentDidUpdate( prevProps ) {
-		if ( this.props.value !== prevProps.value && this.editor.getValue() !== this.props.value ) {
-			this.editor.setValue( this.props.value );
-		}
-
-		if ( this.props.focus !== prevProps.focus ) {
-			this.updateFocus();
-		}
-	}
-
-	componentWillUnmount() {
-		this.editor.on( 'focus', this.onFocus );
-		this.editor.off( 'blur', this.onBlur );
-		this.editor.off( 'cursorActivity', this.onCursorActivity );
-		this.editor.off( 'keyHandled', this.onKeyHandled );
-
-		this.editor.toTextArea();
-		this.editor = null;
-	}
-
-	onFocus() {
-		if ( this.props.onFocus ) {
-			this.props.onFocus();
-		}
-	}
-
-	onBlur( editor ) {
-		if ( this.props.onChange ) {
-			this.props.onChange( editor.getValue() );
-		}
-	}
-
-	onCursorActivity( editor ) {
-		this.lastCursor = editor.getCursor();
-	}
-
-	onKeyHandled( editor, name, event ) {
-		/*
-		 * Pressing UP/DOWN should only move focus to another block if the cursor is
-		 * at the start or end of the editor.
-		 *
-		 * We do this by stopping UP/DOWN from propagating if:
-		 *  - We know what the cursor was before this event; AND
-		 *  - This event caused the cursor to move
-		 */
-		if ( event.keyCode === UP || event.keyCode === DOWN ) {
-			const areCursorsEqual = ( a, b ) => a.line === b.line && a.ch === b.ch;
-			if ( this.lastCursor && ! areCursorsEqual( editor.getCursor(), this.lastCursor ) ) {
-				event.stopImmediatePropagation();
-			}
-		}
-	}
-
-	updateFocus() {
-		if ( this.props.focus && ! this.editor.hasFocus() ) {
-			// Need to wait for the next frame to be painted before we can focus the editor
-			window.requestAnimationFrame( () => {
-				this.editor.focus();
-			} );
-		}
-
-		if ( ! this.props.focus && this.editor.hasFocus() ) {
-			document.activeElement.blur();
-		}
-	}
-
-	render() {
-		return <textarea ref={ ( ref ) => ( this.textarea = ref ) } defaultValue={ this.props.value } />;
-	}
-}
-
-export default CodeEditor;
diff --git a/components/code-editor/index.js b/components/code-editor/index.js
deleted file mode 100644
index e70243b7e4e08..0000000000000
--- a/components/code-editor/index.js
+++ /dev/null
@@ -1,115 +0,0 @@
-/**
- * WordPress dependencies
- */
-import { Component } from '@wordpress/element';
-import { __ } from '@wordpress/i18n';
-import deprecated from '@wordpress/deprecated';
-
-/**
- * Internal dependencies
- */
-import CodeEditor from './editor';
-import Placeholder from '../../packages/components/src/placeholder';
-import Spinner from '../../packages/components/src/spinner';
-
-/**
- * @var {string?} siteURL WordPress Site URL
- */
-let siteURL;
-
-/**
- * Configure the site's URL to lazy load scripts and styles.
- *
- * @param {string} url Site url.
- */
-export function unstable__setSiteURL( url ) { // eslint-disable-line camelcase
-	siteURL = url;
-}
-
-function loadScript() {
-	return new Promise( ( resolve, reject ) => {
-		const handles = [ 'wp-codemirror', 'code-editor', 'htmlhint', 'csslint', 'jshint' ];
-
-		// Don't load htmlhint-kses unless we need it
-		if ( window._wpGutenbergCodeEditorSettings.htmlhint.kses ) {
-			handles.push( 'htmlhint-kses' );
-		}
-
-		const script = document.createElement( 'script' );
-		script.src = `${ siteURL }/wp-admin/load-scripts.php?load=${ handles.join( ',' ) }`;
-		script.onload = resolve;
-		script.onerror = reject;
-
-		document.head.appendChild( script );
-	} );
-}
-
-function loadStyle() {
-	return new Promise( ( resolve, reject ) => {
-		const handles = [ 'wp-codemirror', 'code-editor' ];
-
-		const style = document.createElement( 'link' );
-		style.rel = 'stylesheet';
-		style.href = `${ siteURL }/wp-admin/load-styles.php?load=${ handles.join( ',' ) }`;
-		style.onload = resolve;
-		style.onerror = reject;
-
-		document.head.appendChild( style );
-	} );
-}
-
-let hasAlreadyLoadedAssets = false;
-
-function loadAssets() {
-	if ( hasAlreadyLoadedAssets ) {
-		return Promise.resolve();
-	}
-
-	return Promise.all( [ loadScript(), loadStyle() ] ).then( () => {
-		hasAlreadyLoadedAssets = true;
-	} );
-}
-
-class LazyCodeEditor extends Component {
-	constructor() {
-		super( ...arguments );
-
-		this.state = {
-			status: 'pending',
-		};
-
-		deprecated( 'wp.components.CodeEditor', {
-			version: '4.2',
-			alternative: 'wp.codeEditor directly or any alternative React component for syntax highlighting',
-		} );
-	}
-
-	componentDidMount() {
-		loadAssets().then(
-			() => {
-				this.setState( { status: 'success' } );
-			},
-			() => {
-				this.setState( { status: 'error' } );
-			}
-		);
-	}
-
-	render() {
-		if ( this.state.status === 'pending' ) {
-			return (
-				<Placeholder>
-					<Spinner />
-				</Placeholder>
-			);
-		}
-
-		if ( this.state.status === 'error' ) {
-			return <Placeholder>{ __( 'An unknown error occurred.' ) }</Placeholder>;
-		}
-
-		return <CodeEditor { ...this.props } />;
-	}
-}
-
-export default LazyCodeEditor;
diff --git a/components/code-editor/test/__snapshots__/editor.js.snap b/components/code-editor/test/__snapshots__/editor.js.snap
deleted file mode 100644
index b3c6e6136803d..0000000000000
--- a/components/code-editor/test/__snapshots__/editor.js.snap
+++ /dev/null
@@ -1,7 +0,0 @@
-// Jest Snapshot v1, https://goo.gl/fbAQLP
-
-exports[`CodeEditor should render without an error 1`] = `
-<textarea
-  defaultValue="<b>wowee</b>"
-/>
-`;
diff --git a/components/code-editor/test/editor.js b/components/code-editor/test/editor.js
deleted file mode 100644
index 623fff8da0b51..0000000000000
--- a/components/code-editor/test/editor.js
+++ /dev/null
@@ -1,24 +0,0 @@
-/**
- * External dependencies
- */
-import { shallow } from 'enzyme';
-import { set, noop } from 'lodash';
-
-/**
- * Internal dependencies
- */
-import CodeEditor from '../editor';
-
-describe( 'CodeEditor', () => {
-	it( 'should render without an error', () => {
-		set( global, [ 'wp', 'codeEditor', 'initialize' ], () => ( {
-			codemirror: {
-				on: noop,
-				hasFocus: () => false,
-			},
-		} ) );
-
-		const wrapper = shallow( <CodeEditor value={ '<b>wowee</b>' } /> );
-		expect( wrapper ).toMatchSnapshot();
-	} );
-} );
diff --git a/components/index.js b/components/index.js
deleted file mode 100644
index 8e723cfc5bfd5..0000000000000
--- a/components/index.js
+++ /dev/null
@@ -1,5 +0,0 @@
-// Components
-export { default as CodeEditor, unstable__setSiteURL } from './code-editor'; // eslint-disable-line camelcase
-export * from '../packages/components/src';
-
-import '../packages/components/src/style.scss';
diff --git a/lib/client-assets.php b/lib/client-assets.php
index faf7149b1ac5c..93ba0e83ca924 100644
--- a/lib/client-assets.php
+++ b/lib/client-assets.php
@@ -312,7 +312,6 @@ function gutenberg_register_scripts_and_styles() {
 				'	var storageKey = "WP_DATA_USER_" + userId;',
 				'	wp.data',
 				'		.use( wp.data.plugins.persistence, { storageKey: storageKey } )',
-				'		.use( wp.data.plugins.asyncGenerator )',
 				'		.use( wp.data.plugins.controls );',
 				'} )()',
 			)
@@ -448,10 +447,6 @@ function gutenberg_register_scripts_and_styles() {
 		filemtime( gutenberg_dir_path() . 'build/components/index.js' ),
 		true
 	);
-	wp_add_inline_script(
-		'wp-components',
-		sprintf( 'wp.components.unstable__setSiteURL(%s);', json_encode( site_url() ) )
-	);
 	gutenberg_override_script(
 		'wp-blocks',
 		gutenberg_url( 'build/blocks/index.js' ),
diff --git a/package-lock.json b/package-lock.json
index 8218ddf020f7d..c8787bc1d69af 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -7853,18 +7853,6 @@
 				}
 			}
 		},
-		"extract-text-webpack-plugin": {
-			"version": "4.0.0-beta.0",
-			"resolved": "https://registry.npmjs.org/extract-text-webpack-plugin/-/extract-text-webpack-plugin-4.0.0-beta.0.tgz",
-			"integrity": "sha512-Hypkn9jUTnFr0DpekNam53X47tXn3ucY08BQumv7kdGgeVUBLq3DJHJTi6HNxv4jl9W+Skxjz9+RnK0sJyqqjA==",
-			"dev": true,
-			"requires": {
-				"async": "^2.4.1",
-				"loader-utils": "^1.1.0",
-				"schema-utils": "^0.4.5",
-				"webpack-sources": "^1.1.0"
-			}
-		},
 		"extract-zip": {
 			"version": "1.6.7",
 			"resolved": "https://registry.npmjs.org/extract-zip/-/extract-zip-1.6.7.tgz",
@@ -15864,119 +15852,6 @@
 				}
 			}
 		},
-		"postcss-load-config": {
-			"version": "1.2.0",
-			"resolved": "https://registry.npmjs.org/postcss-load-config/-/postcss-load-config-1.2.0.tgz",
-			"integrity": "sha1-U56a/J3chiASHr+djDZz4M5Q0oo=",
-			"dev": true,
-			"requires": {
-				"cosmiconfig": "^2.1.0",
-				"object-assign": "^4.1.0",
-				"postcss-load-options": "^1.2.0",
-				"postcss-load-plugins": "^2.3.0"
-			},
-			"dependencies": {
-				"cosmiconfig": {
-					"version": "2.2.2",
-					"resolved": "https://registry.npmjs.org/cosmiconfig/-/cosmiconfig-2.2.2.tgz",
-					"integrity": "sha512-GiNXLwAFPYHy25XmTPpafYvn3CLAkJ8FLsscq78MQd1Kh0OU6Yzhn4eV2MVF4G9WEQZoWEGltatdR+ntGPMl5A==",
-					"dev": true,
-					"requires": {
-						"is-directory": "^0.3.1",
-						"js-yaml": "^3.4.3",
-						"minimist": "^1.2.0",
-						"object-assign": "^4.1.0",
-						"os-homedir": "^1.0.1",
-						"parse-json": "^2.2.0",
-						"require-from-string": "^1.1.0"
-					}
-				},
-				"minimist": {
-					"version": "1.2.0",
-					"resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
-					"integrity": "sha1-o1AIsg9BOD7sH7kU9M1d95omQoQ=",
-					"dev": true
-				}
-			}
-		},
-		"postcss-load-options": {
-			"version": "1.2.0",
-			"resolved": "https://registry.npmjs.org/postcss-load-options/-/postcss-load-options-1.2.0.tgz",
-			"integrity": "sha1-sJixVZ3awt8EvAuzdfmaXP4rbYw=",
-			"dev": true,
-			"requires": {
-				"cosmiconfig": "^2.1.0",
-				"object-assign": "^4.1.0"
-			},
-			"dependencies": {
-				"cosmiconfig": {
-					"version": "2.2.2",
-					"resolved": "https://registry.npmjs.org/cosmiconfig/-/cosmiconfig-2.2.2.tgz",
-					"integrity": "sha512-GiNXLwAFPYHy25XmTPpafYvn3CLAkJ8FLsscq78MQd1Kh0OU6Yzhn4eV2MVF4G9WEQZoWEGltatdR+ntGPMl5A==",
-					"dev": true,
-					"requires": {
-						"is-directory": "^0.3.1",
-						"js-yaml": "^3.4.3",
-						"minimist": "^1.2.0",
-						"object-assign": "^4.1.0",
-						"os-homedir": "^1.0.1",
-						"parse-json": "^2.2.0",
-						"require-from-string": "^1.1.0"
-					}
-				},
-				"minimist": {
-					"version": "1.2.0",
-					"resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
-					"integrity": "sha1-o1AIsg9BOD7sH7kU9M1d95omQoQ=",
-					"dev": true
-				}
-			}
-		},
-		"postcss-load-plugins": {
-			"version": "2.3.0",
-			"resolved": "https://registry.npmjs.org/postcss-load-plugins/-/postcss-load-plugins-2.3.0.tgz",
-			"integrity": "sha1-dFdoEWWZrKLwCfrUJrABdQSdjZI=",
-			"dev": true,
-			"requires": {
-				"cosmiconfig": "^2.1.1",
-				"object-assign": "^4.1.0"
-			},
-			"dependencies": {
-				"cosmiconfig": {
-					"version": "2.2.2",
-					"resolved": "https://registry.npmjs.org/cosmiconfig/-/cosmiconfig-2.2.2.tgz",
-					"integrity": "sha512-GiNXLwAFPYHy25XmTPpafYvn3CLAkJ8FLsscq78MQd1Kh0OU6Yzhn4eV2MVF4G9WEQZoWEGltatdR+ntGPMl5A==",
-					"dev": true,
-					"requires": {
-						"is-directory": "^0.3.1",
-						"js-yaml": "^3.4.3",
-						"minimist": "^1.2.0",
-						"object-assign": "^4.1.0",
-						"os-homedir": "^1.0.1",
-						"parse-json": "^2.2.0",
-						"require-from-string": "^1.1.0"
-					}
-				},
-				"minimist": {
-					"version": "1.2.0",
-					"resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
-					"integrity": "sha1-o1AIsg9BOD7sH7kU9M1d95omQoQ=",
-					"dev": true
-				}
-			}
-		},
-		"postcss-loader": {
-			"version": "2.1.3",
-			"resolved": "https://registry.npmjs.org/postcss-loader/-/postcss-loader-2.1.3.tgz",
-			"integrity": "sha512-RuBcNE8rjCkIB0IsbmkGFRmQJTeQJfCI88E0VTarPNTvaNSv9OFv1DvTwgtAN/qlzyiELsmmmtX/tEzKp/cdug==",
-			"dev": true,
-			"requires": {
-				"loader-utils": "^1.1.0",
-				"postcss": "^6.0.0",
-				"postcss-load-config": "^1.2.0",
-				"schema-utils": "^0.4.0"
-			}
-		},
 		"postcss-markdown": {
 			"version": "0.33.0",
 			"resolved": "https://registry.npmjs.org/postcss-markdown/-/postcss-markdown-0.33.0.tgz",
@@ -17024,12 +16899,6 @@
 				}
 			}
 		},
-		"raw-loader": {
-			"version": "0.5.1",
-			"resolved": "https://registry.npmjs.org/raw-loader/-/raw-loader-0.5.1.tgz",
-			"integrity": "sha1-DD0L6u2KAclm2Xh793goElKpeao=",
-			"dev": true
-		},
 		"rc": {
 			"version": "1.2.8",
 			"resolved": "https://registry.npmjs.org/rc/-/rc-1.2.8.tgz",
@@ -17857,12 +17726,6 @@
 			"resolved": "https://registry.npmjs.org/require-directory/-/require-directory-2.1.1.tgz",
 			"integrity": "sha1-jGStX9MNqxyXbiNE/+f3kqam30I="
 		},
-		"require-from-string": {
-			"version": "1.2.1",
-			"resolved": "https://registry.npmjs.org/require-from-string/-/require-from-string-1.2.1.tgz",
-			"integrity": "sha1-UpyczvJzgK3+yaL5ZbZJu+5jZBg=",
-			"dev": true
-		},
 		"require-main-filename": {
 			"version": "1.0.1",
 			"resolved": "https://registry.npmjs.org/require-main-filename/-/require-main-filename-1.0.1.tgz",
@@ -19167,16 +19030,6 @@
 				}
 			}
 		},
-		"style-loader": {
-			"version": "0.20.3",
-			"resolved": "https://registry.npmjs.org/style-loader/-/style-loader-0.20.3.tgz",
-			"integrity": "sha512-2I7AVP73MvK33U7B9TKlYZAqdROyMXDYSMvHLX43qy3GCOaJNiV6i0v/sv9idWIaQ42Yn2dNv79Q5mKXbKhAZg==",
-			"dev": true,
-			"requires": {
-				"loader-utils": "^1.1.0",
-				"schema-utils": "^0.4.5"
-			}
-		},
 		"style-search": {
 			"version": "0.1.0",
 			"resolved": "https://registry.npmjs.org/style-search/-/style-search-0.1.0.tgz",
diff --git a/package.json b/package.json
index 81465d371d532..ea9c4215de5da 100644
--- a/package.json
+++ b/package.json
@@ -83,7 +83,6 @@
 		"eslint-plugin-react": "7.7.0",
 		"eslint-plugin-wordpress": "git://github.com/WordPress-Coding-Standards/eslint-plugin-wordpress.git#1774343f6226052a46b081e01db3fca8793cc9f1",
 		"espree": "3.5.4",
-		"extract-text-webpack-plugin": "4.0.0-beta.0",
 		"glob": "7.1.2",
 		"husky": "0.14.3",
 		"jest-puppeteer": "3.2.1",
@@ -96,16 +95,13 @@
 		"pegjs": "0.10.0",
 		"phpegjs": "1.0.0-beta7",
 		"postcss-color-function": "4.0.1",
-		"postcss-loader": "2.1.3",
 		"puppeteer": "1.6.1",
-		"raw-loader": "0.5.1",
 		"react-test-renderer": "16.4.1",
 		"rimraf": "2.6.2",
 		"rtlcss": "2.4.0",
 		"sass-loader": "6.0.7",
 		"source-map-loader": "0.2.3",
 		"sprintf-js": "1.1.1",
-		"style-loader": "0.20.3",
 		"stylelint": "9.5.0",
 		"stylelint-config-wordpress": "13.1.0",
 		"symlink-or-copy": "1.2.0",
diff --git a/packages/blocks/src/api/index.js b/packages/blocks/src/api/index.js
index 53425eadfa92f..9df9acf536f6b 100644
--- a/packages/blocks/src/api/index.js
+++ b/packages/blocks/src/api/index.js
@@ -28,8 +28,6 @@ export {
 export {
 	registerBlockType,
 	unregisterBlockType,
-	setUnknownTypeHandlerName,
-	getUnknownTypeHandlerName,
 	setFreeformContentHandlerName,
 	getFreeformContentHandlerName,
 	setUnregisteredTypeHandlerName,
diff --git a/packages/blocks/src/api/index.native.js b/packages/blocks/src/api/index.native.js
index d1baeb2ff2a33..c83db0ad39e2c 100644
--- a/packages/blocks/src/api/index.native.js
+++ b/packages/blocks/src/api/index.native.js
@@ -13,8 +13,6 @@ export {
 } from './serializer';
 export {
 	registerBlockType,
-	setUnknownTypeHandlerName,
-	getUnknownTypeHandlerName,
 	setUnregisteredTypeHandlerName,
 	getUnregisteredTypeHandlerName,
 	getBlockType,
diff --git a/packages/blocks/src/api/parser.js b/packages/blocks/src/api/parser.js
index 0ff1bff1ca9db..920468b0917b1 100644
--- a/packages/blocks/src/api/parser.js
+++ b/packages/blocks/src/api/parser.js
@@ -10,7 +10,6 @@ import { flow, castArray, mapValues, omit, stubFalse } from 'lodash';
 import { autop } from '@wordpress/autop';
 import { applyFilters } from '@wordpress/hooks';
 import { parse as defaultParse } from '@wordpress/block-serialization-default-parser';
-import deprecated from '@wordpress/deprecated';
 
 /**
  * Internal dependencies
@@ -262,25 +261,10 @@ export function getBlockAttribute( attributeKey, attributeSchema, innerHTML, com
 			break;
 	}
 
-	if ( value !== undefined ) {
-		if ( isAmbiguousStringSource( attributeSchema ) ) {
-			if ( ! isOfTypes( value, castArray( type ) ) ) {
-				deprecated( 'Attribute type coercion', {
-					plugin: 'Gutenberg',
-					version: '4.2',
-					hint: (
-						'Omit the source to preserve type via serialized ' +
-						'comment demarcation.'
-					),
-				} );
-
-				value = asType( value, type );
-			}
-		} else if ( type !== undefined && ! isOfTypes( value, castArray( type ) ) ) {
-			// Reject the value if it is not valid of type. Reverting to the
-			// undefined value ensures the default is restored, if applicable.
-			value = undefined;
-		}
+	if ( type !== undefined && ! isOfTypes( value, castArray( type ) ) ) {
+		// Reject the value if it is not valid of type. Reverting to the
+		// undefined value ensures the default is restored, if applicable.
+		value = undefined;
 	}
 
 	if ( value === undefined ) {
diff --git a/packages/blocks/src/api/registration.js b/packages/blocks/src/api/registration.js
index 13e62a425fc0f..1dcaad85828cb 100644
--- a/packages/blocks/src/api/registration.js
+++ b/packages/blocks/src/api/registration.js
@@ -10,7 +10,6 @@ import { get, isFunction, some } from 'lodash';
  */
 import { applyFilters, addFilter } from '@wordpress/hooks';
 import { select, dispatch } from '@wordpress/data';
-import deprecated from '@wordpress/deprecated';
 
 /**
  * Internal dependencies
@@ -172,35 +171,6 @@ export function unregisterBlockType( name ) {
 	return oldBlock;
 }
 
-/**
- * Assigns name of block handling unknown block types.
- *
- * @param {string} name Block name.
- */
-export function setUnknownTypeHandlerName( name ) {
-	deprecated( 'setUnknownTypeHandlerName', {
-		plugin: 'Gutenberg',
-		version: '4.2',
-		alternative: 'setFreeformContentHandlerName and setUnregisteredTypeHandlerName',
-	} );
-	setFreeformContentHandlerName( name );
-}
-
-/**
- * Retrieves name of block handling unknown block types, or undefined if no
- * handler has been defined.
- *
- * @return {?string} Blog name.
- */
-export function getUnknownTypeHandlerName() {
-	deprecated( 'getUnknownTypeHandlerName', {
-		plugin: 'Gutenberg',
-		version: '4.2',
-		alternative: 'getFreeformContentHandlerName and getUnregisteredTypeHandlerName',
-	} );
-	return getFreeformContentHandlerName();
-}
-
 /**
  * Assigns name of block for handling non-block content.
  *
diff --git a/packages/blocks/src/api/test/registration.js b/packages/blocks/src/api/test/registration.js
index f2dbf534c98f1..6e99dd9e760c6 100644
--- a/packages/blocks/src/api/test/registration.js
+++ b/packages/blocks/src/api/test/registration.js
@@ -16,8 +16,6 @@ import { addFilter, removeFilter } from '@wordpress/hooks';
 import {
 	registerBlockType,
 	unregisterBlockType,
-	setUnknownTypeHandlerName,
-	getUnknownTypeHandlerName,
 	setFreeformContentHandlerName,
 	getFreeformContentHandlerName,
 	setUnregisteredTypeHandlerName,
@@ -371,29 +369,6 @@ describe( 'blocks', () => {
 		} );
 	} );
 
-	describe( 'setUnknownTypeHandlerName()', () => {
-		it( 'assigns unknown type handler', () => {
-			try {
-				setUnknownTypeHandlerName( 'core/test-block' );
-
-				expect( getUnknownTypeHandlerName() ).toBe( 'core/test-block' );
-				expect( console ).toHaveWarned();
-			} finally {
-				// Restore undefined handler here rather than in `afterEach` because:
-				// - This call generates a deprecation warning.
-				// - Deprecation warnings become test errors unless we assert `toHaveWarned`.
-				// - This is too broad of an assertion to apply for all tests in the suite.
-				setUnknownTypeHandlerName( undefined );
-			}
-		} );
-	} );
-
-	describe( 'getUnknownTypeHandlerName()', () => {
-		it( 'defaults to undefined', () => {
-			expect( getUnknownTypeHandlerName() ).toBeNull();
-		} );
-	} );
-
 	describe( 'setFreeformContentHandlerName()', () => {
 		it( 'assigns unknown type handler', () => {
 			setFreeformContentHandlerName( 'core/test-block' );
diff --git a/packages/blocks/src/store/actions.js b/packages/blocks/src/store/actions.js
index 4ca964e430478..c2da126f4458d 100644
--- a/packages/blocks/src/store/actions.js
+++ b/packages/blocks/src/store/actions.js
@@ -3,11 +3,6 @@
  */
 import { castArray } from 'lodash';
 
-/**
- * WordPress dependencies
- */
-import deprecated from '@wordpress/deprecated';
-
 /**
  * Returns an action object used in signalling that block types have been added.
  *
@@ -50,23 +45,6 @@ export function setDefaultBlockName( name ) {
 	};
 }
 
-/**
- * Returns an action object used to set the name of the block used as a fallback
- * for non-block content.
- *
- * @param {string} name Block name.
- *
- * @return {Object} Action object.
- */
-export function setFallbackBlockName( name ) {
-	deprecated( 'setFallbackBlockName', {
-		plugin: 'Gutenberg',
-		version: '4.2',
-		alternative: 'setFreeformFallbackBlockName and setUnregisteredFallbackBlockName',
-	} );
-	return setFreeformFallbackBlockName( name );
-}
-
 /**
  * Returns an action object used to set the name of the block used as a fallback
  * for non-block content.
diff --git a/packages/blocks/src/store/selectors.js b/packages/blocks/src/store/selectors.js
index ee8005fd9be6e..6f36f8fed2992 100644
--- a/packages/blocks/src/store/selectors.js
+++ b/packages/blocks/src/store/selectors.js
@@ -4,11 +4,6 @@
 import createSelector from 'rememo';
 import { filter, get, includes, map, some } from 'lodash';
 
-/**
- * WordPress dependencies
- */
-import deprecated from '@wordpress/deprecated';
-
 /**
  * Returns all the available block types.
  *
@@ -57,22 +52,6 @@ export function getDefaultBlockName( state ) {
 	return state.defaultBlockName;
 }
 
-/**
- * Returns the name of the fallback block name.
- *
- * @param {Object} state Data state.
- *
- * @return {string?} Fallback block name.
- */
-export function getFallbackBlockName( state ) {
-	deprecated( 'getFallbackBlockName', {
-		plugin: 'Gutenberg',
-		version: '4.2',
-		alternative: 'getFreeformFallbackBlockName and getUnregisteredFallbackBlockName',
-	} );
-	return getFreeformFallbackBlockName( state );
-}
-
 /**
  * Returns the name of the block for handling non-block content.
  *
diff --git a/packages/components/src/primitives/svg/index.js b/packages/components/src/primitives/svg/index.js
index 96c1a81e5fbb7..8b54a777f053b 100644
--- a/packages/components/src/primitives/svg/index.js
+++ b/packages/components/src/primitives/svg/index.js
@@ -3,11 +3,6 @@
  */
 import { createElement } from '@wordpress/element';
 
-/**
- * WordPress dependencies
- */
-import deprecated from '@wordpress/deprecated';
-
 export const Circle = ( props ) => createElement( 'circle', props );
 export const G = ( props ) => createElement( 'g', props );
 export const Path = ( props ) => createElement( 'path', props );
@@ -26,13 +21,3 @@ export const SVG = ( props ) => {
 	// eslint-disable-next-line react/forbid-elements
 	return <svg { ...appliedProps } />;
 };
-
-// deprecations
-export const AccessibleSVG = ( props ) => {
-	deprecated( 'wp.components.AccessibleSVG', {
-		version: '4.2',
-		alternative: 'wp.components.SVG',
-		plugin: 'Gutenberg',
-	} );
-	return <SVG { ...props } />;
-};
diff --git a/packages/components/src/tab-panel/index.js b/packages/components/src/tab-panel/index.js
index 0896486884521..2e94bd2b05e14 100644
--- a/packages/components/src/tab-panel/index.js
+++ b/packages/components/src/tab-panel/index.js
@@ -8,7 +8,6 @@ import { partial, noop, find } from 'lodash';
  */
 import { Component } from '@wordpress/element';
 import { withInstanceId } from '@wordpress/compose';
-import deprecated from '@wordpress/deprecated';
 
 /**
  * Internal dependencies
@@ -65,13 +64,6 @@ class TabPanel extends Component {
 		const selectedTab = find( tabs, { name: selected } );
 		const selectedId = instanceId + '-' + selectedTab.name;
 
-		deprecated( 'Tab Panel child function argument used as string', {
-			alternative: 'Argument is now an object, access the name property directly.',
-			version: '4.2.0',
-			plugin: 'Gutenberg',
-			hint: 'This is a global warning, shown regardless of whether the component is used.',
-		} );
-
 		return (
 			<div className={ className }>
 				<NavigableMenu
@@ -99,7 +91,7 @@ class TabPanel extends Component {
 						className="components-tab-panel__tab-content"
 						tabIndex="0"
 					>
-						{ this.props.children( Object.assign( new String( selectedTab.name ), selectedTab ) ) }
+						{ this.props.children( selectedTab ) }
 					</div>
 				) }
 			</div>
diff --git a/packages/data/src/plugins/async-generator/index.js b/packages/data/src/plugins/async-generator/index.js
deleted file mode 100644
index f6081753af9ef..0000000000000
--- a/packages/data/src/plugins/async-generator/index.js
+++ /dev/null
@@ -1,38 +0,0 @@
-/**
- * External dependencies
- */
-import { applyMiddleware } from 'redux';
-import { get } from 'lodash';
-
-/**
- * Internal dependencies
- */
-import asyncGeneratorMiddleware, { toAsyncIterable } from './middleware';
-
-export default function( registry ) {
-	return {
-		registerStore( reducerKey, options ) {
-			const store = registry.registerStore( reducerKey, options );
-			const enhancer = applyMiddleware( asyncGeneratorMiddleware );
-			const createStore = () => store;
-			Object.assign(
-				store,
-				enhancer( createStore )( options.reducer )
-			);
-			return store;
-		},
-
-		async __experimentalFulfill( reducerKey, selectorName, ...args ) {
-			const resolver = get( registry.namespaces, [ reducerKey, 'resolvers', selectorName ] );
-			if ( ! resolver ) {
-				return;
-			}
-			const store = registry.namespaces[ reducerKey ].store;
-			const state = store.getState();
-			const action = resolver.fulfill( state, ...args );
-			if ( action ) {
-				await store.dispatch( toAsyncIterable( action ) );
-			}
-		},
-	};
-}
diff --git a/packages/data/src/plugins/async-generator/middleware.js b/packages/data/src/plugins/async-generator/middleware.js
deleted file mode 100644
index 14b9c2a083c66..0000000000000
--- a/packages/data/src/plugins/async-generator/middleware.js
+++ /dev/null
@@ -1,102 +0,0 @@
-/**
- * WordPress dependencies
- */
-import deprecated from '@wordpress/deprecated';
-
-/**
- * Returns true if the given argument appears to be a dispatchable action.
- *
- * @param {*} action Object to test.
- *
- * @return {boolean} Whether object is action-like.
- */
-function isActionLike( action ) {
-	return (
-		!! action &&
-		typeof action.type === 'string'
-	);
-}
-
-/**
- * Returns true if the given object is an async iterable, or false otherwise.
- *
- * @param {*} object Object to test.
- *
- * @return {boolean} Whether object is an async iterable.
- */
-function isAsyncIterable( object ) {
-	return (
-		!! object &&
-		typeof object[ Symbol.asyncIterator ] === 'function'
-	);
-}
-
-/**
- * Returns true if the given object is iterable, or false otherwise.
- *
- * @param {*} object Object to test.
- *
- * @return {boolean} Whether object is iterable.
- */
-function isIterable( object ) {
-	return (
-		!! object &&
-		typeof object[ Symbol.iterator ] === 'function'
-	);
-}
-
-/**
- * Normalizes the given object argument to an async iterable, asynchronously
- * yielding on a singular or array of generator yields or promise resolution.
- *
- * @param {*} object Object to normalize.
- *
- * @return {AsyncGenerator} Async iterable actions.
- */
-export function toAsyncIterable( object ) {
-	if ( isAsyncIterable( object ) ) {
-		deprecated( 'Writing Resolvers as async generators', {
-			alternative: 'resolvers as generators with controls',
-			plugin: 'Gutenberg',
-			version: 4.2,
-		} );
-		return object;
-	}
-
-	return ( async function* () {
-		// Normalize as iterable...
-		if ( ! isIterable( object ) ) {
-			object = [ object ];
-		}
-
-		for ( const maybeAction of object ) {
-			yield maybeAction;
-		}
-	}() );
-}
-
-/**
- * Simplest possible promise redux middleware.
- *
- * @param {Object} store Redux store.
- *
- * @return {function} middleware.
- */
-const asyncGeneratorMiddleware = ( store ) => ( next ) => ( action ) => {
-	if ( ! isAsyncIterable( action ) ) {
-		return next( action );
-	}
-
-	const runtime = async ( fulfillment ) => {
-		for await ( const maybeAction of fulfillment ) {
-		// Dispatch if it quacks like an action.
-			if ( isActionLike( maybeAction ) ) {
-				store.dispatch( maybeAction );
-			}
-		}
-	};
-
-	return runtime( action );
-};
-
-export default asyncGeneratorMiddleware;
diff --git a/packages/data/src/plugins/controls/index.js b/packages/data/src/plugins/controls/index.js
index f4c59ea35239d..bc19c9cfad897 100644
--- a/packages/data/src/plugins/controls/index.js
+++ b/packages/data/src/plugins/controls/index.js
@@ -2,7 +2,6 @@
  * External dependencies
  */
 import { applyMiddleware } from 'redux';
-import { get } from 'lodash';
 
 /**
  * WordPress dependencies
@@ -29,18 +28,5 @@ export default function( registry ) {
 
 			return store;
 		},
-
-		async __experimentalFulfill( reducerKey, selectorName, ...args ) {
-			if ( ! registry.namespaces[ reducerKey ].supportControls ) {
-				await registry.__experimentalFulfill( reducerKey, selectorName, ...args );
-				return;
-			}
-
-			const resolver = get( registry.namespaces, [ reducerKey, 'resolvers', selectorName ] );
-			if ( ! resolver ) {
-				return;
-			}
-			await registry.namespaces[ reducerKey ].store.dispatch( resolver.fulfill( ...args ) );
-		},
 	};
 }
diff --git a/packages/data/src/plugins/index.js b/packages/data/src/plugins/index.js
index 4d9f0ea4ba166..587768f415911 100644
--- a/packages/data/src/plugins/index.js
+++ b/packages/data/src/plugins/index.js
@@ -1,3 +1,2 @@
 export { default as controls } from './controls';
 export { default as persistence } from './persistence';
-export { default as asyncGenerator } from './async-generator';
diff --git a/packages/data/src/registry.js b/packages/data/src/registry.js
index 64202afe088e9..2ed7217021563 100644
--- a/packages/data/src/registry.js
+++ b/packages/data/src/registry.js
@@ -144,7 +144,7 @@ export function createRegistry( storeConfigs = {} ) {
 					}
 
 					startResolution( reducerKey, selectorName, args );
-					await registry.__experimentalFulfill( reducerKey, selectorName, ...args );
+					await fulfill( reducerKey, selectorName, ...args );
 					finishResolution( reducerKey, selectorName, args );
 				}
 
@@ -288,7 +288,6 @@ export function createRegistry( storeConfigs = {} ) {
 		select,
 		dispatch,
 		use,
-		__experimentalFulfill: fulfill,
 	};
 
 	/**
diff --git a/packages/data/src/test/registry.js b/packages/data/src/test/registry.js
index ce95db092d865..2484bae4bd0b1 100644
--- a/packages/data/src/test/registry.js
+++ b/packages/data/src/test/registry.js
@@ -7,7 +7,6 @@ import { castArray, mapValues } from 'lodash';
  * Internal dependencies
  */
 import { createRegistry } from '../registry';
-import { asyncGenerator } from '../plugins';
 
 describe( 'createRegistry', () => {
 	let registry;
@@ -278,94 +277,6 @@ describe( 'createRegistry', () => {
 		} );
 	} );
 
-	describe( 'async generators', () => {
-		it( 'should resolve mixed type action array to dispatch', () => {
-			registry.use( asyncGenerator );
-			const reducer = ( state = 0, action ) => {
-				return action.type === 'INCREMENT' ? state + 1 : state;
-			};
-			const selectors = {
-				getCount: ( state ) => state,
-			};
-			const resolvers = {
-				getCount: () => [
-					{ type: 'INCREMENT' },
-					Promise.resolve( { type: 'INCREMENT' } ),
-				],
-			};
-			registry.registerStore( 'counter', {
-				reducer,
-				selectors,
-				resolvers,
-			} );
-
-			const promise = subscribeUntil( [
-				() => registry.select( 'counter' ).getCount() === 2,
-				() => registry.select( 'core/data' ).hasFinishedResolution( 'counter', 'getCount' ),
-			] );
-
-			registry.select( 'counter' ).getCount();
-
-			return promise;
-		} );
-
-		it( 'should resolve generator action to dispatch', () => {
-			registry.use( asyncGenerator );
-			const reducer = ( state = 'NOTOK', action ) => {
-				return action.type === 'SET_OK' ? 'OK' : state;
-			};
-			const selectors = {
-				getValue: ( state ) => state,
-			};
-			const resolvers = {
-				* getValue() {
-					yield { type: 'SET_OK' };
-				},
-			};
-			registry.registerStore( 'demo', {
-				reducer,
-				selectors,
-				resolvers,
-			} );
-			const promise = subscribeUntil( [
-				() => registry.select( 'demo' ).getValue() === 'OK',
-				() => registry.select( 'core/data' ).hasFinishedResolution( 'demo', 'getValue' ),
-			] );
-
-			registry.select( 'demo' ).getValue();
-
-			return promise;
-		} );
-
-		it( 'should resolve async iterator action to dispatch', () => {
-			registry.use( asyncGenerator );
-			const reducer = ( state = 0, action ) => {
-				return action.type === 'INCREMENT' ? state + 1 : state;
-			};
-			const selectors = {
-				getCount: ( state ) => state,
-			};
-			const resolvers = {
-				getCount: async function* () {
-					yield { type: 'INCREMENT' };
-					yield await Promise.resolve( { type: 'INCREMENT' } );
-				},
-			};
-			registry.registerStore( 'counter', { reducer, selectors, resolvers } );
-
-			const promise = subscribeUntil( [
-				() => registry.select( 'counter' ).getCount() === 2,
-				() => registry.select( 'core/data' ).hasFinishedResolution( 'counter', 'getCount' ),
-			] );
-
-			registry.select( 'counter' ).getCount();
-
-			expect( console ).toHaveWarned();
-
-			return promise;
-		} );
-	} );
-
 	describe( 'select', () => {
 		it( 'registers multiple selectors to the public API', () => {
 			const store = registry.registerReducer( 'reducer1', () => 'state1' );
diff --git a/packages/edit-post/src/hooks/components/media-upload/index.js b/packages/edit-post/src/hooks/components/media-upload/index.js
index f950d34d628ee..b2eaa4d86fef5 100644
--- a/packages/edit-post/src/hooks/components/media-upload/index.js
+++ b/packages/edit-post/src/hooks/components/media-upload/index.js
@@ -8,7 +8,6 @@ import { castArray, pick } from 'lodash';
  */
 import { Component } from '@wordpress/element';
 import { __ } from '@wordpress/i18n';
-import deprecated from '@wordpress/deprecated';
 
 // Getter for the sake of unit tests.
 const getGalleryDetailsMediaFrame = () => {
@@ -77,7 +76,6 @@ const getAttachmentsCollection = ( ids ) => {
 class MediaUpload extends Component {
 	constructor( {
 		allowedTypes,
-		type: deprecatedType,
 		multiple = false,
 		gallery = false,
 		title = __( 'Select or Upload Media' ),
@@ -91,19 +89,6 @@ class MediaUpload extends Component {
 		this.onUpdate = this.onUpdate.bind( this );
 		this.onClose = this.onClose.bind( this );
 
-		let allowedTypesToUse = allowedTypes;
-		if ( ! allowedTypes && deprecatedType ) {
-			deprecated( 'type property of wp.editor.MediaUpload', {
-				version: '4.2',
-				alternative: 'allowedTypes property containing an array with the allowedTypes or do not pass any property if all types are allowed',
-			} );
-			if ( deprecatedType === '*' ) {
-				allowedTypesToUse = undefined;
-			} else {
-				allowedTypesToUse = [ deprecatedType ];
-			}
-		}
-
 		if ( gallery ) {
 			const currentState = value ? 'gallery-edit' : 'gallery';
 			const GalleryDetailsMediaFrame = getGalleryDetailsMediaFrame();
@@ -113,7 +98,7 @@ class MediaUpload extends Component {
 				multiple,
 			} );
 			this.frame = new GalleryDetailsMediaFrame( {
-				mimeType: allowedTypesToUse,
+				mimeType: allowedTypes,
 				state: currentState,
 				multiple,
 				selection,
@@ -128,8 +113,8 @@ class MediaUpload extends Component {
 				},
 				multiple,
 			};
-			if ( !! allowedTypesToUse ) {
-				frameConfig.library = { type: allowedTypesToUse };
+			if ( !! allowedTypes ) {
+				frameConfig.library = { type: allowedTypes };
 			}
 
 			this.frame = wp.media( frameConfig );
diff --git a/packages/edit-post/src/index.js b/packages/edit-post/src/index.js
index 9797f877b6c8f..70c8cf4d38fec 100644
--- a/packages/edit-post/src/index.js
+++ b/packages/edit-post/src/index.js
@@ -8,15 +8,13 @@ import '@wordpress/viewport';
 import { registerCoreBlocks } from '@wordpress/block-library';
 import { render, unmountComponentAtNode } from '@wordpress/element';
 import { dispatch } from '@wordpress/data';
-import deprecated from '@wordpress/deprecated';
 
 /**
  * Internal dependencies
  */
 import './hooks';
 import './plugins';
-import store from './store';
-import { initializeMetaBoxState } from './store/actions';
+import './store';
 import Editor from './editor';
 
 /**
@@ -51,8 +49,6 @@ export function reinitializeEditor( postType, postId, target, settings, override
  * @param {Object}  postId        ID of the post to edit.
  * @param {?Object} settings      Editor settings object.
  * @param {Object}  overridePost  Post properties to override.
- *
- * @return {Object} Editor interface.
  */
 export function initializeEditor( id, postType, postId, settings, overridePost ) {
 	const target = document.getElementById( id );
@@ -71,18 +67,6 @@ export function initializeEditor( id, postType, postId, settings, overridePost )
 		<Editor settings={ settings } onError={ reboot } postId={ postId } postType={ postType } overridePost={ overridePost } />,
 		target
 	);
-
-	return {
-		initializeMetaBoxes( metaBoxes ) {
-			deprecated( 'editor.initializeMetaBoxes', {
-				alternative: 'setActiveMetaBoxLocations action (`core/edit-post`)',
-				plugin: 'Gutenberg',
-				version: '4.2',
-			} );
-
-			store.dispatch( initializeMetaBoxState( metaBoxes ) );
-		},
-	};
 }
 
 export { default as PluginBlockSettingsMenuItem } from './components/block-settings-menu/plugin-block-settings-menu-item';
diff --git a/packages/edit-post/src/store/actions.js b/packages/edit-post/src/store/actions.js
index 12bfb1b8aa6a9..6f52941d91748 100644
--- a/packages/edit-post/src/store/actions.js
+++ b/packages/edit-post/src/store/actions.js
@@ -167,26 +167,6 @@ export function togglePinnedPluginItem( pluginName ) {
 	};
 }
 
-export function initializeMetaBoxState() {
-	deprecated( 'initializeMetaBoxState action (`core/edit-post`)', {
-		plugin: 'Gutenberg',
-		version: '4.2',
-	} );
-	return {
-		type: 'DO_NOTHING',
-	};
-}
-
-export function setActiveMetaBoxLocations() {
-	deprecated( 'setActiveMetaBoxLocations action (`core/edit-post`)', {
-		plugin: 'Gutenberg',
-		version: '4.2',
-	} );
-	return {
-		type: 'DO_NOTHING',
-	};
-}
-
 /**
  * Returns an action object used in signaling
  * what Meta boxes are available in which location.
@@ -224,22 +204,3 @@ export function metaBoxUpdatesSuccess() {
 	};
 }
 
-/**
- * Returns an action object used to set the saved meta boxes data.
- * This is used to check if the meta boxes have been touched when leaving the editor.
- *
- * @param   {Object} dataPerLocation Meta Boxes Data per location.
- *
- * @return {Object} Action object.
- */
-export function setMetaBoxSavedData( dataPerLocation ) {
-	deprecated( 'setMetaBoxSavedData action (`core/edit-post`)', {
-		plugin: 'Gutenberg',
-		version: '4.2',
-	} );
-
-	return {
-		type: 'META_BOX_SET_SAVED_DATA',
-		dataPerLocation,
-	};
-}
diff --git a/packages/edit-post/src/store/selectors.js b/packages/edit-post/src/store/selectors.js
index 0008d6a70990c..8d7d41b76abae 100644
--- a/packages/edit-post/src/store/selectors.js
+++ b/packages/edit-post/src/store/selectors.js
@@ -189,33 +189,6 @@ export function isPluginItemPinned( state, pluginName ) {
 	return get( pinnedPluginItems, [ pluginName ], true );
 }
 
-/**
- * Returns the state of legacy meta boxes.
- *
- * @param {Object} state Global application state.
- *
- * @return {Object} State of meta boxes.
- */
-export function getMetaBoxes( state ) {
-	deprecated( 'getMetaBox selector (`core/edit-post`)', {
-		alternative: 'getActiveMetaBoxLocations selector',
-		plugin: 'Gutenberg',
-		version: '4.2',
-	} );
-
-	return [
-		'normal',
-		'side',
-		'advanced',
-	].reduce( ( result, location ) => {
-		result[ location ] = {
-			isActive: isMetaBoxLocationActive( state, location ),
-		};
-
-		return result;
-	}, {} );
-}
-
 /**
  * Returns an array of active meta box locations.
  *
@@ -292,24 +265,6 @@ export const getAllMetaBoxes = createSelector(
 	]
 );
 
-/**
- * Returns the state of legacy meta boxes.
- *
- * @param {Object} state    Global application state.
- * @param {string} location Location of the meta box.
- *
- * @return {Object} State of meta box at specified location.
- */
-export function getMetaBox( state, location ) {
-	deprecated( 'getMetaBox selector (`core/edit-post`)', {
-		alternative: 'isMetaBoxLocationActive selector',
-		plugin: 'Gutenberg',
-		version: '4.2',
-	} );
-
-	return getMetaBoxes( state )[ location ];
-}
-
 /**
  * Returns true if the post is using Meta Boxes
  *
diff --git a/packages/edit-post/src/store/test/selectors.js b/packages/edit-post/src/store/test/selectors.js
index cd70c00d02f32..32dbce728572f 100644
--- a/packages/edit-post/src/store/test/selectors.js
+++ b/packages/edit-post/src/store/test/selectors.js
@@ -16,10 +16,8 @@ import {
 	isPluginSidebarOpened,
 	getActiveGeneralSidebarName,
 	isPluginItemPinned,
-	getMetaBoxes,
 	hasMetaBoxes,
 	isSavingMetaBoxes,
-	getMetaBox,
 	getActiveMetaBoxLocations,
 	isMetaBoxLocationActive,
 	isEditorPanelEnabled,
@@ -414,52 +412,6 @@ describe( 'selectors', () => {
 		} );
 	} );
 
-	describe( 'getMetaBoxes', () => {
-		it( 'should return the state of all meta boxes', () => {
-			const state = {
-				metaBoxes: {
-					locations: {
-						normal: [ 'postcustom' ],
-					},
-				},
-			};
-
-			const result = getMetaBoxes( state );
-
-			expect( deprecated ).toHaveBeenCalled();
-			expect( result ).toEqual( {
-				normal: {
-					isActive: true,
-				},
-				advanced: {
-					isActive: false,
-				},
-				side: {
-					isActive: false,
-				},
-			} );
-		} );
-	} );
-
-	describe( 'getMetaBox', () => {
-		it( 'should return the state of selected meta box', () => {
-			const state = {
-				metaBoxes: {
-					locations: {
-						side: [ 'postcustom' ],
-					},
-				},
-			};
-
-			const result = getMetaBox( state, 'side' );
-
-			expect( deprecated ).toHaveBeenCalled();
-			expect( result ).toEqual( {
-				isActive: true,
-			} );
-		} );
-	} );
-
 	describe( 'getActiveMetaBoxLocations', () => {
 		it( 'should return the active meta boxes', () => {
 			const state = {
diff --git a/packages/editor/src/components/media-placeholder/index.js b/packages/editor/src/components/media-placeholder/index.js
index adcd565acc1af..c4d4feab34d5a 100644
--- a/packages/editor/src/components/media-placeholder/index.js
+++ b/packages/editor/src/components/media-placeholder/index.js
@@ -16,7 +16,6 @@ import {
 } from '@wordpress/components';
 import { __ } from '@wordpress/i18n';
 import { Component } from '@wordpress/element';
-import deprecated from '@wordpress/deprecated';
 
 /**
  * Internal dependencies
@@ -64,25 +63,8 @@ class MediaPlaceholder extends Component {
 		this.closeURLInput = this.closeURLInput.bind( this );
 	}
 
-	getAllowedTypes() {
-		const { allowedTypes, type: deprecatedType } = this.props;
-		let allowedTypesToUse = allowedTypes;
-		if ( ! allowedTypes && deprecatedType ) {
-			deprecated( 'type property of wp.editor.MediaPlaceholder', {
-				version: '4.2',
-				alternative: 'allowedTypes property containing an array with the allowedTypes or do not pass any property if all types are allowed',
-			} );
-			if ( deprecatedType === '*' ) {
-				allowedTypesToUse = undefined;
-			} else {
-				allowedTypesToUse = [ deprecatedType ];
-			}
-		}
-		return allowedTypesToUse;
-	}
-
 	onlyAllowsImages() {
-		const allowedTypes = this.getAllowedTypes();
+		const { allowedTypes } = this.props;
 		if ( ! allowedTypes ) {
 			return false;
 		}
@@ -118,8 +100,7 @@ class MediaPlaceholder extends Component {
 	}
 
 	onFilesUpload( files ) {
-		const { onSelect, multiple, onError } = this.props;
-		const allowedTypes = this.getAllowedTypes();
+		const { onSelect, multiple, onError, allowedTypes } = this.props;
 		const setMedia = multiple ? onSelect : ( [ media ] ) => onSelect( media );
 		mediaUpload( {
 			allowedTypes,
@@ -149,6 +130,7 @@ class MediaPlaceholder extends Component {
 			onHTMLDrop = noop,
 			multiple = false,
 			notices,
+			allowedTypes,
 		} = this.props;
 
 		const {
@@ -156,8 +138,6 @@ class MediaPlaceholder extends Component {
 			src,
 		} = this.state;
 
-		const allowedTypes = this.getAllowedTypes();
-
 		let instructions = labels.instructions || '';
 		let title = labels.title || '';
 		if ( ! instructions || ! title ) {
diff --git a/packages/editor/src/components/unsaved-changes-warning/index.js b/packages/editor/src/components/unsaved-changes-warning/index.js
index fae27c0848956..24599cc107104 100644
--- a/packages/editor/src/components/unsaved-changes-warning/index.js
+++ b/packages/editor/src/components/unsaved-changes-warning/index.js
@@ -1,15 +1,9 @@
-/**
- * External dependencies
- */
-import { stubFalse } from 'lodash';
-
 /**
  * WordPress dependencies
  */
 import { __ } from '@wordpress/i18n';
 import { Component } from '@wordpress/element';
 import { withSelect } from '@wordpress/data';
-import deprecated from '@wordpress/deprecated';
 
 class UnsavedChangesWarning extends Component {
 	constructor() {
@@ -33,18 +27,9 @@ class UnsavedChangesWarning extends Component {
 	 * @return {?string} Warning prompt message, if unsaved changes exist.
 	 */
 	warnIfUnsavedChanges( event ) {
-		const { isDirty, forceIsDirty = stubFalse } = this.props;
-
-		// For deprecation, infer explicitly provided if not assigned to
-		// fallback value.
-		if ( forceIsDirty !== stubFalse ) {
-			deprecated( 'UnsavedChangesWarning forceIsDirty prop', {
-				plugin: 'Gutenberg',
-				version: '4.2',
-			} );
-		}
+		const { isDirty } = this.props;
 
-		if ( isDirty || forceIsDirty() ) {
+		if ( isDirty ) {
 			event.returnValue = __( 'You have unsaved changes. If you proceed, they will be lost.' );
 			return event.returnValue;
 		}
diff --git a/packages/editor/src/utils/media-upload/index.js b/packages/editor/src/utils/media-upload/index.js
index bb0a1e0b0dcfb..8693cede6f590 100644
--- a/packages/editor/src/utils/media-upload/index.js
+++ b/packages/editor/src/utils/media-upload/index.js
@@ -7,7 +7,6 @@ import { noop } from 'lodash';
  * WordPress dependencies
  */
 import { select } from '@wordpress/data';
-import deprecated from '@wordpress/deprecated';
 
 /**
  * Internal dependencies
@@ -31,13 +30,7 @@ export default function( {
 	maxUploadFileSize,
 	onError = noop,
 	onFileChange,
-	allowedType,
 } ) {
-	deprecated( 'mediaDetails in object passed to onFileChange callback of wp.editor.mediaUpload', {
-		version: '4.2',
-		alternative: 'media_details property containing exactly the property as returned by the rest api',
-	} );
-
 	const {
 		getCurrentPostId,
 		getEditorSettings,
@@ -45,20 +38,8 @@ export default function( {
 	const wpAllowedMimeTypes = getEditorSettings().allowedMimeTypes;
 	maxUploadFileSize = maxUploadFileSize || getEditorSettings().maxUploadFileSize;
 
-	let allowedTypesToUse = allowedTypes;
-	if ( ! allowedTypes && allowedType ) {
-		deprecated( 'allowedType parameter property of wp.editor.mediaUpload', {
-			version: '4.2',
-			alternative: 'allowedTypes property containing an array with the allowedTypes or do not pass any property if all types are allowed',
-		} );
-		if ( allowedType === '*' ) {
-			allowedTypesToUse = undefined;
-		} else {
-			allowedTypesToUse = [ allowedType ];
-		}
-	}
 	mediaUpload( {
-		allowedTypes: allowedTypesToUse,
+		allowedTypes,
 		filesList,
 		onFileChange,
 		additionalData: {
diff --git a/packages/editor/src/utils/media-upload/media-upload.js b/packages/editor/src/utils/media-upload/media-upload.js
index b7158e7d2227f..8ef98130190d7 100644
--- a/packages/editor/src/utils/media-upload/media-upload.js
+++ b/packages/editor/src/utils/media-upload/media-upload.js
@@ -169,11 +169,7 @@ export function mediaUpload( {
 					caption: get( savedMedia, [ 'caption', 'raw' ], '' ),
 					title: savedMedia.title.raw,
 					url: savedMedia.source_url,
-					mediaDetails: {},
 				};
-				if ( has( savedMedia, [ 'media_details', 'sizes' ] ) ) {
-					mediaObject.mediaDetails.sizes = get( savedMedia, [ 'media_details', 'sizes' ], {} );
-				}
 				setAndUpdateFiles( idx, mediaObject );
 			} )
 			.catch( ( error ) => {
diff --git a/webpack.config.js b/webpack.config.js
index 78085c77bbbf8..30de6acc9d496 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -1,7 +1,6 @@
 /**
  * External dependencies
  */
-const ExtractTextPlugin = require( 'extract-text-webpack-plugin' );
 const WebpackRTLPlugin = require( 'webpack-rtl-plugin' );
 const LiveReloadPlugin = require( 'webpack-livereload-plugin' );
 const CopyWebpackPlugin = require( 'copy-webpack-plugin' );
@@ -17,33 +16,6 @@ const CustomTemplatedPathPlugin = require( '@wordpress/custom-templated-path-web
 const LibraryExportDefaultPlugin = require( '@wordpress/library-export-default-webpack-plugin' );
 const { BundleAnalyzerPlugin } = require( 'webpack-bundle-analyzer' );
 
-// Main CSS loader for everything but blocks..
-const mainCSSExtractTextPlugin = new ExtractTextPlugin( {
-	filename: './build/[basename]/style.css',
-} );
-
-// Configuration for the ExtractTextPlugin.
-const extractConfig = {
-	use: [
-		{ loader: 'raw-loader' },
-		{
-			loader: 'postcss-loader',
-			options: {
-				plugins: require( './bin/packages/post-css-config' ),
-			},
-		},
-		{
-			loader: 'sass-loader',
-			query: {
-				includePaths: [ 'assets/stylesheets' ],
-				data: '@import "colors"; @import "breakpoints"; @import "variables"; @import "mixins"; @import "animations";@import "z-index";',
-				outputStyle: 'production' === process.env.NODE_ENV ?
-					'compressed' : 'nested',
-			},
-		},
-	],
-};
-
 /**
  * Given a string, returns a new string with dash separators converedd to
  * camel-case equivalent. This is not as aggressive as `_.camelCase` in
@@ -61,10 +33,6 @@ function camelCaseDash( string ) {
 	);
 }
 
-const entryPointNames = [
-	'components',
-];
-
 const gutenbergPackages = [
 	'a11y',
 	'api-fetch',
@@ -74,6 +42,7 @@ const gutenbergPackages = [
 	'block-library',
 	'block-serialization-default-parser',
 	'block-serialization-spec-parser',
+	'components',
 	'compose',
 	'core-data',
 	'data',
@@ -112,10 +81,7 @@ const externals = {
 	'lodash-es': 'lodash',
 };
 
-[
-	...entryPointNames,
-	...gutenbergPackages,
-].forEach( ( name ) => {
+gutenbergPackages.forEach( ( name ) => {
 	externals[ `@wordpress/${ name }` ] = {
 		this: [ 'wp', camelCaseDash( name ) ],
 	};
@@ -126,18 +92,11 @@ const mode = isProduction ? 'production' : 'development';
 
 const config = {
 	mode,
-	entry: Object.assign(
-		entryPointNames.reduce( ( memo, path ) => {
-			const name = camelCaseDash( path );
-			memo[ name ] = `./${ path }`;
-			return memo;
-		}, {} ),
-		gutenbergPackages.reduce( ( memo, packageName ) => {
-			const name = camelCaseDash( packageName );
-			memo[ name ] = `./packages/${ packageName }`;
-			return memo;
-		}, {} ),
-	),
+	entry: gutenbergPackages.reduce( ( memo, packageName ) => {
+		const name = camelCaseDash( packageName );
+		memo[ name ] = `./packages/${ packageName }`;
+		return memo;
+	}, {} ),
 	output: {
 		filename: './build/[basename]/index.js',
 		path: __dirname,
@@ -170,14 +129,9 @@ const config = {
 				],
 				use: 'babel-loader',
 			},
-			{
-				test: /\.s?css$/,
-				use: mainCSSExtractTextPlugin.extract( extractConfig ),
-			},
 		],
 	},
 	plugins: [
-		mainCSSExtractTextPlugin,
 		// Create RTL files with a -rtl suffix
 		new WebpackRTLPlugin( {
 			suffix: '-rtl',

From 53253bb5f40c59da3e788e7328aba5e45acbf9d5 Mon Sep 17 00:00:00 2001
From: Riad Benguella <benguella@gmail.com>
Date: Tue, 23 Oct 2018 14:51:59 +0100
Subject: [PATCH 2/7] Remove useless deprecated dependencies

---
 lib/client-assets.php        | 2 --
 package-lock.json            | 2 --
 packages/blocks/package.json | 1 -
 packages/data/package.json   | 1 -
 4 files changed, 6 deletions(-)

diff --git a/lib/client-assets.php b/lib/client-assets.php
index 93ba0e83ca924..5724299ce2474 100644
--- a/lib/client-assets.php
+++ b/lib/client-assets.php
@@ -293,7 +293,6 @@ function gutenberg_register_scripts_and_styles() {
 		array(
 			'lodash',
 			'wp-compose',
-			'wp-deprecated',
 			'wp-element',
 			'wp-is-shallow-equal',
 			'wp-polyfill',
@@ -455,7 +454,6 @@ function gutenberg_register_scripts_and_styles() {
 			'wp-blob',
 			'wp-block-serialization-default-parser',
 			'wp-data',
-			'wp-deprecated',
 			'wp-dom',
 			'wp-element',
 			'wp-hooks',
diff --git a/package-lock.json b/package-lock.json
index c8787bc1d69af..be04942b43981 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2098,7 +2098,6 @@
 				"@wordpress/block-serialization-default-parser": "file:packages/block-serialization-default-parser",
 				"@wordpress/block-serialization-spec-parser": "file:packages/block-serialization-spec-parser",
 				"@wordpress/data": "file:packages/data",
-				"@wordpress/deprecated": "file:packages/deprecated",
 				"@wordpress/dom": "file:packages/dom",
 				"@wordpress/element": "file:packages/element",
 				"@wordpress/hooks": "file:packages/hooks",
@@ -2183,7 +2182,6 @@
 			"requires": {
 				"@babel/runtime": "^7.0.0",
 				"@wordpress/compose": "file:packages/compose",
-				"@wordpress/deprecated": "file:packages/deprecated",
 				"@wordpress/element": "file:packages/element",
 				"@wordpress/is-shallow-equal": "file:packages/is-shallow-equal",
 				"@wordpress/redux-routine": "file:packages/redux-routine",
diff --git a/packages/blocks/package.json b/packages/blocks/package.json
index 8ca13799999ae..d028e4e0449ac 100644
--- a/packages/blocks/package.json
+++ b/packages/blocks/package.json
@@ -26,7 +26,6 @@
 		"@wordpress/block-serialization-default-parser": "file:../block-serialization-default-parser",
 		"@wordpress/block-serialization-spec-parser": "file:../block-serialization-spec-parser",
 		"@wordpress/data": "file:../data",
-		"@wordpress/deprecated": "file:../deprecated",
 		"@wordpress/dom": "file:../dom",
 		"@wordpress/element": "file:../element",
 		"@wordpress/hooks": "file:../hooks",
diff --git a/packages/data/package.json b/packages/data/package.json
index df149b29db0fa..f4ebe59ba50d0 100644
--- a/packages/data/package.json
+++ b/packages/data/package.json
@@ -23,7 +23,6 @@
 	"dependencies": {
 		"@babel/runtime": "^7.0.0",
 		"@wordpress/compose": "file:../compose",
-		"@wordpress/deprecated": "file:../deprecated",
 		"@wordpress/element": "file:../element",
 		"@wordpress/is-shallow-equal": "file:../is-shallow-equal",
 		"@wordpress/redux-routine": "file:../redux-routine",

From 989e2913fd7b023ef18a55c74310867e157df1fb Mon Sep 17 00:00:00 2001
From: Riad Benguella <benguella@gmail.com>
Date: Tue, 23 Oct 2018 14:57:04 +0100
Subject: [PATCH 3/7] Fix unit test

---
 packages/blocks/src/api/test/parser.js | 13 ++-----------
 test/unit/jest.config.json             |  1 -
 2 files changed, 2 insertions(+), 12 deletions(-)

diff --git a/packages/blocks/src/api/test/parser.js b/packages/blocks/src/api/test/parser.js
index a23e2f995f7d0..758566284c96a 100644
--- a/packages/blocks/src/api/test/parser.js
+++ b/packages/blocks/src/api/test/parser.js
@@ -4,11 +4,6 @@
 import { attr } from 'hpq';
 import deepFreeze from 'deep-freeze';
 
-/**
- * WordPress dependencies
- */
-import deprecated from '@wordpress/deprecated';
-
 /**
  * Internal dependencies
  */
@@ -297,10 +292,7 @@ describe( 'block parser', () => {
 	} );
 
 	describe( 'getBlockAttributes()', () => {
-		it( 'should parse as coerced value (deprecated)', () => {
-			// TODO: When removing this deprecation, ensure to complement with
-			// enhancement to the intended rejection of a numeric type on an
-			// ambiguous string source.
+		it( 'should reject the value with a wrong type', () => {
 			const blockType = {
 				attributes: {
 					number: {
@@ -315,9 +307,8 @@ describe( 'block parser', () => {
 			const innerHTML = '<div data-number="10">Ribs</div>';
 
 			expect( getBlockAttributes( blockType, innerHTML, {} ) ).toEqual( {
-				number: 10,
+				number: undefined,
 			} );
-			expect( deprecated ).toHaveBeenCalled();
 		} );
 
 		it( 'should merge attributes with the parsed and default attributes', () => {
diff --git a/test/unit/jest.config.json b/test/unit/jest.config.json
index da5f3807bc5c5..2519b3b4e2e97 100644
--- a/test/unit/jest.config.json
+++ b/test/unit/jest.config.json
@@ -10,7 +10,6 @@
 		"<rootDir>/gutenberg-mobile/"
 	],
 	"moduleNameMapper": {
-		"@wordpress\\/(components)$": "$1",
 		"@wordpress\\/(block-serialization-spec-parser|is-shallow-equal)$": "packages/$1",
 		"@wordpress\\/([a-z0-9-]+)$": "packages/$1/src"
 	},

From ca95f8e14283b0c89d2308a3c83c2e3a5e213b1c Mon Sep 17 00:00:00 2001
From: Riad Benguella <benguella@gmail.com>
Date: Tue, 23 Oct 2018 15:03:18 +0100
Subject: [PATCH 4/7] Updating changelogs

---
 packages/blocks/CHANGELOG.md     |  8 ++++++++
 packages/components/CHANGELOG.md |  6 ++++++
 packages/data/CHANGELOG.md       |  6 ++++++
 packages/edit-post/CHANGELOG.md  | 11 ++++++++++-
 packages/editor/CHANGELOG.md     |  2 ++
 5 files changed, 32 insertions(+), 1 deletion(-)

diff --git a/packages/blocks/CHANGELOG.md b/packages/blocks/CHANGELOG.md
index 08b2e25271ecd..a8febb1a17be3 100644
--- a/packages/blocks/CHANGELOG.md
+++ b/packages/blocks/CHANGELOG.md
@@ -1,3 +1,11 @@
+## 5.0.0 (Unreleased)
+
+### Breaking Changes
+
+- Attribute type coercion has been removed. Omit the source to preserve type via serialized comment demarcation.
+- `setUnknownTypeHandlerName` has been removed. Please use `setFreeformContentHandlerName` and `setUnregisteredTypeHandlerName` instead.
+- `getUnknownTypeHandlerName` has been removed. Please use `getFreeformContentHandlerName` and `getUnregisteredTypeHandlerName` instead.
+
 ## 4.0.4 (2018-10-19)
 
 ## 4.0.3 (2018-10-18)
diff --git a/packages/components/CHANGELOG.md b/packages/components/CHANGELOG.md
index 1eef1646bf3a0..9dae018a3b749 100644
--- a/packages/components/CHANGELOG.md
+++ b/packages/components/CHANGELOG.md
@@ -1,3 +1,9 @@
+## 5.0.0 (Unreleased)
+
+### Breaking Changes
+
+- `AccessibleSVG` component has been removed. Please use `SVG` instead.
+
 ## 4.2.1 (2018-10-22)
 
 ### Bug Fix
diff --git a/packages/data/CHANGELOG.md b/packages/data/CHANGELOG.md
index 5bb376f526d34..be148de704496 100644
--- a/packages/data/CHANGELOG.md
+++ b/packages/data/CHANGELOG.md
@@ -1,3 +1,9 @@
+## 3.0.0 (Unreleased)
+
+### Breaking Changes
+
+- Writing resolvers as async generators has been removed. Use the controls plugin instead.
+
 ## 2.1.4 (2018-10-19)
 
 ## 2.1.3 (2018-10-18)
diff --git a/packages/edit-post/CHANGELOG.md b/packages/edit-post/CHANGELOG.md
index 7a387817035b4..a8e53349590dc 100644
--- a/packages/edit-post/CHANGELOG.md
+++ b/packages/edit-post/CHANGELOG.md
@@ -1,4 +1,13 @@
-## 1.0.5 (Unreleased)
+## 2.0.0 (Unreleased)
+
+### Breaking Changes
+
+- `setActiveMetaBoxLocations` action (`core/edit-post`) has been removed.
+- `initializeMetaBoxState` action (`core/edit-post`) has been removed.
+- `initializeEditor` no longer returns an object. Use the `setActiveMetaBoxLocations` action (`core/edit-post`) in place of the existing object's `initializeMetaBoxes` function.
+- `setMetaBoxSavedData` action (`core/edit-post`) has been removed.
+- `getMetaBoxes` selector (`core/edit-post`) has been removed. Use `getActiveMetaBoxLocations` selector (`core/edit-post`) instead.
+- `getMetaBox` selector (`core/edit-post`) has been removed. Use `isMetaBoxLocationActive` selector (`core/edit-post`) instead.
 
 ### Bug Fixes
 
diff --git a/packages/editor/CHANGELOG.md b/packages/editor/CHANGELOG.md
index 7af47476b5b70..b5f6e16bbe8e4 100644
--- a/packages/editor/CHANGELOG.md
+++ b/packages/editor/CHANGELOG.md
@@ -3,6 +3,8 @@
 ### Breaking Changes
 
 - The `labels.name` property has been removed from `MediaPlaceholder` in favor of the new `labels.instructions` prop.
+- The `UnsavedChangesWarning` component no longer accepts a `forceIsDirty` prop.
+- `mediaDetails` in object passed to `onFileChange` callback of `mediaUpload`. Please use `media_details` property instead.
 
 ### New Features
 

From fe2e5ead76e53ec2f294e7bf30607bf02e89a087 Mon Sep 17 00:00:00 2001
From: Riad Benguella <benguella@gmail.com>
Date: Tue, 23 Oct 2018 15:08:35 +0100
Subject: [PATCH 5/7] Remove useless mock

---
 packages/blocks/src/api/test/parser.js | 2 --
 1 file changed, 2 deletions(-)

diff --git a/packages/blocks/src/api/test/parser.js b/packages/blocks/src/api/test/parser.js
index 758566284c96a..e55a2546a9bca 100644
--- a/packages/blocks/src/api/test/parser.js
+++ b/packages/blocks/src/api/test/parser.js
@@ -29,8 +29,6 @@ import {
 import { createBlock } from '../factory';
 import serialize from '../serializer';
 
-jest.mock( '@wordpress/deprecated', () => jest.fn() );
-
 describe( 'block parser', () => {
 	const defaultBlockSettings = {
 		attributes: {

From 138af7643083f1852ddb6e0eddb2842e6c29ce2c Mon Sep 17 00:00:00 2001
From: Riad Benguella <benguella@gmail.com>
Date: Wed, 24 Oct 2018 11:11:48 +0100
Subject: [PATCH 6/7] Update the docs

---
 docs/data/data-core-blocks.md    | 21 -------------------
 docs/data/data-core-edit-post.md | 36 +-------------------------------
 2 files changed, 1 insertion(+), 56 deletions(-)

diff --git a/docs/data/data-core-blocks.md b/docs/data/data-core-blocks.md
index 5f10809be4c64..9a2524905fa40 100644
--- a/docs/data/data-core-blocks.md
+++ b/docs/data/data-core-blocks.md
@@ -47,18 +47,6 @@ Returns the name of the default block name.
 
 Default block name.
 
-### getFallbackBlockName
-
-Returns the name of the fallback block name.
-
-*Parameters*
-
- * state: Data state.
-
-*Returns*
-
-Fallback block name.
-
 ### getFreeformFallbackBlockName
 
 Returns the name of the block for handling non-block content.
@@ -177,15 +165,6 @@ Returns an action object used to remove a registered block type.
 
 Returns an action object used to set the default block name.
 
-*Parameters*
-
- * name: Block name.
-
-### setFallbackBlockName
-
-Returns an action object used to set the name of the block used as a fallback
-for non-block content.
-
 *Parameters*
 
  * name: Block name.
diff --git a/docs/data/data-core-edit-post.md b/docs/data/data-core-edit-post.md
index 87ff8d8bb05a9..47a0c449eec90 100644
--- a/docs/data/data-core-edit-post.md
+++ b/docs/data/data-core-edit-post.md
@@ -171,18 +171,6 @@ When the value is not set it defaults to true.
 
 Whether the plugin item is pinned.
 
-### getMetaBoxes
-
-Returns the state of legacy meta boxes.
-
-*Parameters*
-
- * state: Global application state.
-
-*Returns*
-
-State of meta boxes.
-
 ### getActiveMetaBoxLocations
 
 Returns an array of active meta box locations.
@@ -247,19 +235,6 @@ Returns the list of all the available meta boxes.
 
 List of meta boxes.
 
-### getMetaBox
-
-Returns the state of legacy meta boxes.
-
-*Parameters*
-
- * state: Global application state.
- * location: Location of the meta box.
-
-*Returns*
-
-State of meta box at specified location.
-
 ### hasMetaBoxes
 
 Returns true if the post is using Meta Boxes
@@ -379,13 +354,4 @@ Returns an action object used to request meta box update.
 
 ### metaBoxUpdatesSuccess
 
-Returns an action object used signal a successful meta box update.
-
-### setMetaBoxSavedData
-
-Returns an action object used to set the saved meta boxes data.
-This is used to check if the meta boxes have been touched when leaving the editor.
-
-*Parameters*
-
- * dataPerLocation: Meta Boxes Data per location.
\ No newline at end of file
+Returns an action object used signal a successful meta box update.
\ No newline at end of file

From a26e0c92c0e04816de6151583bfe2eb1cdea94dd Mon Sep 17 00:00:00 2001
From: Riad Benguella <benguella@gmail.com>
Date: Wed, 24 Oct 2018 11:14:38 +0100
Subject: [PATCH 7/7] Update Gutenberg mobile to fix the deprecations issue

---
 gutenberg-mobile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gutenberg-mobile b/gutenberg-mobile
index 776bb23f7f19e..c90c36410d4c0 160000
--- a/gutenberg-mobile
+++ b/gutenberg-mobile
@@ -1 +1 @@
-Subproject commit 776bb23f7f19ef57b491f9708e9795b3a2ddb68e
+Subproject commit c90c36410d4c0c3f2dea84ca666b1b585408a03f