/**
 * @license Copyright (c) 2003-2024, CKSource Holding sp. z o.o. All rights reserved.
 * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license
 */
/**
 * @module image/imageconfig
 */
/**
 * The configuration of the image features. Used by the image features in the `@ckeditor/ckeditor5-image` package.
 *
 * ```ts
 * ClassicEditor
 * 	.create( editorElement, {
 * 			image: ... // Image feature options.
 * 	} )
 * 	.then( ... )
 * 	.catch( ... );
 * ```
 *
 * See {@link module:core/editor/editorconfig~EditorConfig all editor options}.
 */
export interface ImageConfig {
    /**
     * The image insert configuration.
     */
    insert?: ImageInsertConfig;
    /**
     * The image resize options.
     *
     * Each option should have at least these two properties:
     *
     * * name: The name of the UI component registered in the global
     * {@link module:ui/editorui/editorui~EditorUI#componentFactory component factory} of the editor,
     * representing the button a user can click to change the size of an image,
     * * value: An actual image width applied when a user clicks the mentioned button
     * ({@link module:image/imageresize/resizeimagecommand~ResizeImageCommand} gets executed).
     * The value property is combined with the
     * {@link module:image/imageconfig~ImageConfig#resizeUnit `config.image.resizeUnit`} (`%` by default).
     * For instance: `value: '50'` and `resizeUnit: '%'` will render as `'50%'` in the UI.
     *
     * **Resetting the image size**
     *
     * If you want to set an option that will reset image to its original size, you need to pass a `null` value
     * to one of the options. The `:original` token is not mandatory, you can call it anything you wish, but it must reflect
     * in the standalone buttons configuration for the image toolbar.
     *
     * ```ts
     * ClassicEditor
     * 	.create( editorElement, {
     * 		image: {
     * 			resizeUnit: "%",
     * 			resizeOptions: [ {
     * 				name: 'resizeImage:original',
     * 				value: null
     * 			},
     * 			{
     * 				name: 'resizeImage:50',
     * 				value: '50'
     * 			},
     * 			{
     * 				name: 'resizeImage:75',
     * 				value: '75'
     * 			} ]
     * 		}
     * 	} )
     * 	.then( ... )
     * 	.catch( ... );
     * ```
     *
     * **Resizing images using a dropdown**
     *
     * With resize options defined, you can decide whether you want to display them as a dropdown or as standalone buttons.
     * For the dropdown, you need to pass only the `resizeImage` token to the
     {@link module:image/imageconfig~ImageConfig#toolbar `config.image.toolbar`}. The dropdown contains all defined options by default:
     *
     * ```ts
     * ClassicEditor
     * 	.create( editorElement, {
     * 		image: {
     * 			resizeUnit: "%",
     * 			resizeOptions: [ {
     * 				name: 'resizeImage:original',
     * 				value: null
     * 			},
     * 			{
     * 				name: 'resizeImage:50',
     * 				value: '50'
     * 			},
     * 			{
     * 				name: 'resizeImage:75',
     * 				value: '75'
     * 			} ],
     * 			toolbar: [ 'resizeImage', ... ],
     * 		}
     * 	} )
     * 	.then( ... )
     * 	.catch( ... );
     * ```
     *
     * **Resizing images using individual buttons**
     *
     * If you want to have separate buttons for {@link module:image/imageconfig~ImageResizeOption each option},
     * pass their names to the {@link module:image/imageconfig~ImageConfig#toolbar `config.image.toolbar`} instead. Please keep in mind
     * that this time **you must define the additional
     * {@link module:image/imageconfig~ImageResizeOption `icon` property}**:
     *
     * ```ts
     * ClassicEditor
     * 	.create( editorElement, {
     * 		image: {
     * 			resizeUnit: "%",
     * 			resizeOptions: [ {
     * 				name: 'resizeImage:original',
     * 				value: null,
     * 				icon: 'original'
     * 			},
     * 			{
     * 				name: 'resizeImage:25',
     * 				value: '25',
     * 				icon: 'small'
     * 			},
     * 			{
     * 				name: 'resizeImage:50',
     * 				value: '50',
     * 				icon: 'medium'
     * 			},
     * 			{
     * 				name: 'resizeImage:75',
     * 				value: '75',
     * 				icon: 'large'
     * 			} ],
     * 			toolbar: [ 'resizeImage:25', 'resizeImage:50', 'resizeImage:75', 'resizeImage:original', ... ],
     * 		}
     * 	} )
     * 	.then( ... )
     * 	.catch( ... );
     * ```
     *
     * **Customizing resize button labels**
     *
     * You can set your own label for each resize button. To do that, add the `label` property like in the example below.
     *
     * * When using the **dropdown**, the labels are displayed on the list of all options when you open the dropdown.
     * * When using **standalone buttons**, the labels will are displayed as tooltips when a user hovers over the button.
     *
     * ```ts
     * ClassicEditor
     * 	.create( editorElement, {
     * 		image: {
     * 			resizeUnit: "%",
     * 			resizeOptions: [ {
     * 				name: 'resizeImage:original',
     * 				value: null,
     * 				label: 'Original size'
     * 				// Note: add the "icon" property if you're configuring a standalone button.
     * 			},
     * 			{
     * 				name: 'resizeImage:50',
     * 				value: '50',
     * 				label: 'Medium size'
     * 				// Note: add the "icon" property if you're configuring a standalone button.
     * 			},
     * 			{
     * 				name: 'resizeImage:75',
     * 				value: '75',
     * 				label: 'Large size'
     * 				// Note: add the "icon" property if you're configuring a standalone button.
     * 			} ]
     * 		}
     * 	} )
     * 	.then( ... )
     * 	.catch( ... );
     * ```
     *
     * **Default value**
     *
     * The following configuration is used by default:
     *
     * ```ts
     * resizeOptions = [
     * 	{
     * 		name: 'resizeImage:original',
     * 		value: null,
     * 		icon: 'original'
     * 	},
     * 	{
     * 		name: 'resizeImage:25',
     * 		value: '25',
     * 		icon: 'small'
     * 	},
     * 	{
     * 		name: 'resizeImage:50',
     * 		value: '50',
     * 		icon: 'medium'
     * 	},
     * 	{
     * 		name: 'resizeImage:75',
     * 		value: '75',
     * 		icon: 'large'
     * 	}
     * ];
     * ```
     */
    resizeOptions?: Array<ImageResizeOption>;
    /**
     * The available options are `'px'` or `'%'`.
     *
     * Determines the size unit applied to the resized image.
     *
     * ```ts
     * ClassicEditor
     * 	.create( editorElement, {
     * 		image: {
     * 			resizeUnit: 'px'
     * 		}
     * 	} )
     * 	.then( ... )
     * 	.catch( ... );
     * ```
     *
     * This option is used by the {@link module:image/imageresize~ImageResize} feature.
     *
     * @default '%'
     */
    resizeUnit?: 'px' | '%';
    /**
     * The {@link module:image/imagestyle `ImageStyle`} plugin requires a list of the
     * {@link module:image/imageconfig~ImageStyleConfig#options image style options} to work properly.
     * The default configuration is provided (listed below) and can be customized while creating the editor instance.
     *
     * # **Command**
     *
     * The {@link module:image/imagestyle/imagestylecommand~ImageStyleCommand `imageStyleCommand`}
     * is configured based on the defined options,
     * so you can change the style of the selected image by executing the following command:
     *
     * ```ts
     * editor.execute( 'imageStyle' { value: 'alignLeft' } );
     * ```
     *
     * # **Buttons**
     *
     * All of the image style options provided in the configuration are registered
     * in the {@link module:ui/componentfactory~ComponentFactory UI components factory} with the "imageStyle:" prefixes and can be used
     * in the {@link module:image/imageconfig~ImageConfig#toolbar image toolbar configuration}. The buttons available by default depending
     * on the loaded plugins are listed in the next section.
     *
     * Read more about styling images in the {@glink features/images/images-styles Image styles guide}.
     *
     * # **Default options and buttons**
     *
     * If the custom configuration is not provided, the default configuration will be used depending on the loaded
     * image editing plugins.
     *
     * * If both {@link module:image/image/imageblockediting~ImageBlockEditing `ImageBlockEditing`} and
     * {@link module:image/image/imageinlineediting~ImageInlineEditing `ImageInlineEditing`} plugins are loaded
     * (which is usually the default editor configuration), the following options will be available for the toolbar
     * configuration. These options will be registered as the buttons with the "imageStyle:" prefixes.
     *
     * ```ts
     * const imageDefaultConfig = {
     * 	styles: {
     * 		options: [
     * 			'inline', 'alignLeft', 'alignRight',
     * 			'alignCenter', 'alignBlockLeft', 'alignBlockRight',
     * 			'block', 'side'
     * 		]
     * 	}
     * };
     * ```
     *
     * * If only the {@link module:image/image/imageblockediting~ImageBlockEditing `ImageBlockEditing`} plugin is loaded,
     * the following buttons (options) and groups will be available for the toolbar configuration.
     * These options will be registered as the buttons with the "imageStyle:" prefixes.
     *
     * ```ts
     * const imageDefaultConfig = {
     * 	styles: {
     * 		options: [ 'block', 'side' ]
     * 	}
     * };
     * ```
     *
     * * If only the {@link module:image/image/imageinlineediting~ImageInlineEditing `ImageInlineEditing`} plugin is loaded,
     * the following buttons (options) and groups will available for the toolbar configuration.
     * These options will be registered as the buttons with the "imageStyle:" prefixes.
     *
     * ```ts
     * const imageDefaultConfig = {
     * 	styles: {
     * 		options: [ 'inline', 'alignLeft', 'alignRight' ]
     * 	}
     * };
     * ```
     *
     * Read more about the {@link module:image/imagestyle/utils#DEFAULT_OPTIONS default styling options}.
     *
     * # **Custom configuration**
     *
     * The image styles configuration can be customized in several ways:
     *
     * * Any of the {@link module:image/imagestyle/utils#DEFAULT_OPTIONS default styling options}
     * can be loaded by the reference to its name as follows:
     *
     * ```ts
     * ClassicEditor
     * 	.create( editorElement, {
     * 		image: {
     * 			styles: {
     * 				options: [ 'alignLeft', 'alignRight' ]
     * 			}
     * 		}
     * 	} );
     * ```
     *
     * * Each of the {@link module:image/imagestyle/utils#DEFAULT_OPTIONS default image style options} can be customized,
     * e.g. to change the `icon`, `title` or CSS `className` of the style. The feature also provides several
     * {@link module:image/imagestyle/utils#DEFAULT_ICONS default icons} to choose from.
     *
     * ```ts
     * import customIcon from 'custom-icon.svg';
     *
     * // ...
     *
     * ClassicEditor.create( editorElement, { image:
     * 	styles: {
     * 		options: {
     * 			// This will only customize the icon of the "block" style.
     * 			// Note: 'right' is one of default icons provided by the feature.
     * 			{
     * 				name: 'block',
     * 				icon: 'right'
     * 			},
     *
     * 			// This will customize the icon, title and CSS class of the default "side" style.
     * 			{
     * 				name: 'side',
     * 				icon: customIcon,
     * 				title: 'My side style',
     * 				className: 'custom-side-image'
     * 			}
     * 		}
     * 	}
     * } );
     * ```
     *
     * * If none of the {@link module:image/imagestyle/utils#DEFAULT_OPTIONS default image style options}
     * works for the integration, it is possible to define independent custom styles, too.
     *
     * See the documentation about the image style {@link module:image/imageconfig~ImageStyleOptionDefinition options}
     * to define the custom image style configuration properly.
     *
     * ```ts
     * import redIcon from 'red-icon.svg';
     * import blueIcon from 'blue-icon.svg';
     *
     * // ...
     *
     * ClassicEditor.create( editorElement, { image:
     * 	styles: {
     * 		// A list of completely custom styling options.
     * 		options: [
     * 			{
     * 				name: 'regular',
     * 				modelElements: [ 'imageBlock', 'imageInline' ],
     * 				title: 'Regular image',
     * 				icon: 'full',
     * 				isDefault: true
     * 			}, {
     * 				name: 'blue',
     * 				modelElements: [ 'imageInline' ],
     * 				title: 'Blue image',
     * 				icon: blueIcon,
     * 				className: 'image-blue'
     * 			}, {
     * 				name: 'red',
     * 				modelElements: [ 'imageBlock' ],
     * 				title: 'Red image',
     * 				icon: redIcon,
     * 				className: 'image-red'
     * 			}
     * 		]
     * 	}
     * } );
     * ```
     */
    styles?: ImageStyleConfig;
    /**
     * Items to be placed in the image toolbar.
     * This option is used by the {@link module:image/imagetoolbar~ImageToolbar} feature.
     *
     * Assuming that you use the following features:
     *
     * * {@link module:image/imagestyle~ImageStyle} (with a default configuration),
     * * {@link module:image/imagetextalternative~ImageTextAlternative},
     * * {@link module:image/imagecaption~ImageCaption},
     *
     * the following toolbar items will be available in {@link module:ui/componentfactory~ComponentFactory}:
     * * `'imageTextAlternative'`,
     * * `'toggleImageCaption'`,
     * * {@link module:image/imageconfig~ImageConfig#styles buttons provided by the `ImageStyle` plugin},
     * * {@link module:image/imagestyle/utils#DEFAULT_DROPDOWN_DEFINITIONS drop-downs provided by the `ImageStyle` plugin},
     *
     * so you can configure the toolbar like this:
     *
     * ```ts
     * const imageConfig = {
     * 	toolbar: [
     * 		'imageStyle:inline', 'imageStyle:wrapText', 'imageStyle:breakText', '|',
     * 		'toggleImageCaption', 'imageTextAlternative'
     * 	]
     * };
     * ```
     *
     * Besides that, the `ImageStyle` plugin allows to define a
     * {@link module:image/imageconfig~ImageStyleDropdownDefinition custom drop-down} while configuring the toolbar.
     *
     * The same items can also be used in the {@link module:core/editor/editorconfig~EditorConfig#toolbar main editor toolbar}.
     *
     * Read more about configuring toolbar in {@link module:core/editor/editorconfig~EditorConfig#toolbar}.
     */
    toolbar?: Array<string | ImageStyleDropdownDefinition>;
    /**
     * The image upload configuration.
     */
    upload?: ImageUploadConfig;
}
/**
 * The configuration of the image insert dropdown panel view. Used by the image insert feature in the `@ckeditor/ckeditor5-image` package.
 *
 * ```ts
 * ClassicEditor
 * 	.create( editorElement, {
 * 			image: {
 * 				insert: {
 * 				... // settings for "insertImage" view goes here
 * 				}
 * 			}
 * 	} )
 * 	.then( ... )
 * 	.catch( ... );
 * ```
 *
 * See {@link module:core/editor/editorconfig~EditorConfig all editor options}.
 */
export interface ImageInsertConfig {
    /**
     * The image insert panel view configuration contains a list of {@link module:image/imageinsert~ImageInsert} integrations.
     *
     * The option accepts string tokens.
     * * for predefined integrations, we have 3 special strings: `upload`, `url`, and `assetManager`.
     * * for custom integrations, each string should be a name of the integration registered by the
     * {@link module:image/imageinsert/imageinsertui~ImageInsertUI#registerIntegration `ImageInsertUI#registerIntegration()`}.
     *
     * ```ts
     * // Add `upload`, `assetManager` and `url` integrations.
     * const imageInsertConfig = {
     * 	insert: {
     * 		integrations: [
     * 			'upload',
     * 			'assetManager',
     * 			'url'
     * 		]
     * 	}
     * };
     * ```
     *
     * @default [ 'upload', 'assetManager', 'url' ]
     */
    integrations?: Array<string>;
    /**
     * This option allows to override the image type used by the {@link module:image/image/insertimagecommand~InsertImageCommand}
     * when the user inserts new images into the editor content. By default, all images inserted into the editor will be block
     * if {@link module:image/imageblock~ImageBlock} is loaded. To let the editor decide the image type, choose `'auto'`.
     *
     * Available options are:
     *
     * * `'block'` – all images inserted into the editor will be block (requires the {@link module:image/imageblock~ImageBlock} plugin),
     * * `'inline'` – all images inserted into the editor will be inline (requires the {@link module:image/imageinline~ImageInline} plugin),
     * * `'auto'` – the editor will choose the optimal image type based on the context of the insertion and availability of plugins.
     *
     * @default 'block'
     */
    type?: 'inline' | 'block' | 'auto';
}
/**
 * The image resize option used in the {@link module:image/imageconfig~ImageConfig#resizeOptions image resize configuration}.
 */
export interface ImageResizeOption {
    /**
     * The name of the UI component that changes the image size.
     * * If you configure the feature using individual resize buttons, you can refer to this name in the
     * {@link module:image/imageconfig~ImageConfig#toolbar image toolbar configuration}.
     * * If you configure the feature using the resize dropdown, this name will be used for a list item in the dropdown.
     */
    name: string;
    /**
     *
     * The value of the resize option without the unit
     * ({@link module:image/imageconfig~ImageConfig#resizeUnit configured separately}). `null` resets an image to its original size.
     */
    value: string | null;
    /**
     * An icon used by an individual resize button (see the `name` property to learn more).
     * Available icons are: `'small'`, `'medium'`, `'large'`, `'original'`.
     */
    icon?: string;
    /**
     * An option label displayed in the dropdown or, if the feature is configured using
     * individual buttons, a {@link module:ui/button/buttonview~ButtonView#tooltip} and an ARIA attribute of a button.
     * If not specified, the label is generated automatically based on the `value` option and the
     * {@link module:image/imageconfig~ImageConfig#resizeUnit `config.image.resizeUnit`}.
     */
    label?: string;
}
/**
 * # **The image style custom drop-down definition descriptor**
 *
 * This definition can be implemented in the {@link module:image/imageconfig~ImageConfig#toolbar image toolbar configuration}
 * to define a completely custom drop-down in the image toolbar.
 *
 * ```ts
 * ClassicEditor.create( editorElement, {
 * 	image: { toolbar: [
 * 			// One of the predefined drop-downs
 * 			'imageStyle:wrapText',
 * 		// Custom drop-down
 * 		{
 * 			name: 'imageStyle:customDropdown',
 * 			title: Custom drop-down title,
 * 			items: [ 'imageStyle:alignLeft', 'imageStyle:alignRight' ],
 * 			defaultItem: 'imageStyle:alignLeft'
 * 		}
 * 	] }
 * } );
 * ```
 *
 * **Note:** At the moment it is possible to populate the custom drop-down with only the buttons registered by the `ImageStyle` plugin.
 *
 * The defined drop-down will be registered
 * as the {@link module:ui/dropdown/dropdownview~DropdownView}
 * with the {@link module:ui/dropdown/button/splitbuttonview~SplitButtonView} under the provided name in the
 * {@link module:ui/componentfactory~ComponentFactory}
 */
export interface ImageStyleDropdownDefinition {
    /**
     * The unique name of the drop-down. It is recommended to precede it with the "imageStyle:" prefix
     * to avoid collision with the components' names registered by other plugins.
     */
    name: string;
    /**
     * The drop-down's title. It will be used as the split button label along with the title of the default item
     * in the following manner: "Custom drop-down title: Default item title".
     *
     * Setting `title` to one of
     * {@link module:image/imagestyle/imagestyleui~ImageStyleUI#localizedDefaultStylesTitles}
     * will automatically translate it to the language of the editor.
     */
    title?: string;
    /**
     * The list of the names of the buttons that will be placed in the drop-down's toolbar.
     * Each of the buttons has to be one of the {@link module:image/imageconfig~ImageConfig#styles default image style buttons}
     * or to be defined as the {@link module:image/imageconfig~ImageStyleOptionDefinition image styling option}.
     */
    items: Array<string>;
    /**
     * defaultItem The name of one of the buttons from the items list,
     * which will be used as a default button for the drop-down's split button.
     */
    defaultItem: string;
}
/**
 * The configuration for the {@link module:image/imagestyle~ImageStyle} plugin that should be provided
 * while creating the editor instance.
 *
 * A detailed information about the default configuration and customization can be found in
 * {@link module:image/imageconfig~ImageConfig#styles `ImageConfig#styles`}.
 */
export interface ImageStyleConfig {
    /**
     * A list of the image style options.
     */
    options?: Array<string | ImageStyleOptionDefinition>;
}
/**
 * The image styling option definition descriptor.
 *
 * This definition should be implemented in the `Image` plugin {@link module:image/imageconfig~ImageConfig#styles configuration} for:
 *
 * * customizing one of the {@link module:image/imagestyle/utils#DEFAULT_OPTIONS default styling options} by providing the proper name
 * of the default style and the properties that should be overridden,
 * * or defining a completely custom styling option by providing a custom name and implementing the following properties.
 *
 * ```ts
 * import fullSizeIcon from 'path/to/icon.svg';
 *
 * const imageStyleOptionDefinition = {
 * 	name: 'fullSize',
 * 	icon: fullSizeIcon,
 * 	title: 'Full size image',
 * 	className: 'image-full-size',
 * 	modelElements: [ 'imageBlock', 'imageInline' ]
 * }
 * ```
 *
 * The styling option will be registered as the button under the name `'imageStyle:{name}'` in the
 * {@link module:ui/componentfactory~ComponentFactory UI components factory} (this functionality is provided by the
 * {@link module:image/imagestyle/imagestyleui~ImageStyleUI} plugin).
 */
export interface ImageStyleOptionDefinition {
    /**
     * The unique name of the styling option. It will be used to:
     *
     * * refer to one of the {@link module:image/imagestyle/utils#DEFAULT_OPTIONS default styling options} or define the custom style,
     * * store the chosen style in the model by setting the `imageStyle` attribute of the model image element,
     * * as a value of the {@link module:image/imagestyle/imagestylecommand~ImageStyleCommand#execute `imageStyle` command},
     * * when registering a button for the style in the following manner: (`'imageStyle:{name}'`).
     */
    name: string;
    /**
     * When set, the style will be used as the default one for the model elements
     * listed in the `modelElements` property. A default style does not apply any CSS class to the view element.
     *
     * If this property is not defined, its value is inherited
     * from the {@link module:image/imagestyle/utils#DEFAULT_OPTIONS default styling options} addressed in the name property.
     */
    isDefault?: boolean;
    /**
     * One of the following to be used when creating the styles's button:
     *
     * * an SVG icon source (as an XML string),
     * * one of the keys in {@link module:image/imagestyle/utils#DEFAULT_ICONS} to use one of default icons provided by the plugin.
     *
     * If this property is not defined, its value is inherited
     * from the {@link module:image/imagestyle/utils#DEFAULT_OPTIONS default styling options} addressed in the name property.
     */
    icon: string;
    /**
     * The styles's title. Setting `title` to one of
     * {@link module:image/imagestyle/imagestyleui~ImageStyleUI#localizedDefaultStylesTitles}
     * will automatically translate it to the language of the editor.
     *
     * If this property is not defined, its value is inherited
     * from the {@link module:image/imagestyle/utils#DEFAULT_OPTIONS default styling options} addressed in the name property.
     */
    title: string;
    /**
     * The CSS class used to represent the style in the view.
     * It should be used only for the non-default styles.
     *
     * If this property is not defined, its value is inherited
     * from the {@link module:image/imagestyle/utils#DEFAULT_OPTIONS default styling options} addressed in the name property.
     */
    className?: string;
    /**
     * The list of the names of the model elements that are supported by the style.
     * The possible values are:
     * * `[ 'imageBlock' ]` if the style can be applied to the image type introduced by the
     * {@link module:image/image/imageblockediting~ImageBlockEditing `ImageBlockEditing`} plugin,
     * * `[ 'imageInline' ]` if the style can be applied to the image type introduced by the
     * {@link module:image/image/imageinlineediting~ImageInlineEditing `ImageInlineEditing`} plugin,
     * * `[ 'imageInline', 'imageBlock' ]` if the style can be applied to both image types introduced by the plugins mentioned above.
     *
     * This property determines which model element names work with the style. If the model element name of the currently selected
     * image is different, upon executing the
     * {@link module:image/imagestyle/imagestylecommand~ImageStyleCommand#execute `imageStyle`} command the image type (model element name)
     * will automatically change.
     *
     * If this property is not defined, its value is inherited
     * from the {@link module:image/imagestyle/utils#DEFAULT_OPTIONS default styling options} addressed in the name property.
     */
    modelElements: Array<string>;
}
/**
 * The configuration of the image upload feature. Used by the image upload feature in the `@ckeditor/ckeditor5-image` package.
 *
 * ```ts
 * ClassicEditor
 * 	.create( editorElement, {
 * 		image: {
 * 			upload:  ... // Image upload feature options.
 * 		}
 * 	} )
 * 	.then( ... )
 * 	.catch( ... );
 * ```
 *
 * See {@link module:core/editor/editorconfig~EditorConfig all editor options}.
 */
export interface ImageUploadConfig {
    /**
     * The list of accepted image types.
     *
     * The accepted types of images can be customized to allow only certain types of images:
     *
     * ```ts
     * // Allow only JPEG and PNG images:
     * const imageUploadConfig = {
     * 	types: [ 'png', 'jpeg' ]
     * };
     * ```
     *
     * The type string should match [one of the sub-types](https://www.iana.org/assignments/media-types/media-types.xhtml#image)
     * of the image MIME type. For example, for the `image/jpeg` MIME type, add `'jpeg'` to your image upload configuration.
     *
     * **Note:** This setting only restricts some image types to be selected and uploaded through the CKEditor UI and commands. Image type
     * recognition and filtering should also be implemented on the server which accepts image uploads.
     *
     * @default [ 'jpeg', 'png', 'gif', 'bmp', 'webp', 'tiff' ]
     */
    types: Array<string>;
}
