import { CustomElementDefinition } from '../../global/shared-types/custom-element.types';
/**
 * The Markdown component receives markdown syntax
 * and renders it as HTML.
 *
 * A built-in set of lime-elements components is whitelisted by default
 * and can be used directly in markdown content without any configuration.
 * Consumers can extend this list via the `whitelist` prop or `limel-config`.
 *
 * When custom elements use JSON attribute values, any URL-bearing
 * properties (`href`, `src`, `cite`, `longDesc`) are automatically
 * sanitized using the same protocol allowlists as rehype-sanitize.
 * URLs with dangerous schemes (e.g. `javascript:`, `data:`) are
 * removed (with a console warning) to prevent script injection.
 *
 * @exampleComponent limel-example-markdown-headings
 * @exampleComponent limel-example-markdown-emphasis
 * @exampleComponent limel-example-markdown-lists
 * @exampleComponent limel-example-markdown-links
 * @exampleComponent limel-example-markdown-images
 * @exampleComponent limel-example-markdown-code
 * @exampleComponent limel-example-markdown-footnotes
 * @exampleComponent limel-example-markdown-tables
 * @exampleComponent limel-example-markdown-html
 * @exampleComponent limel-example-markdown-keys
 * @exampleComponent limel-example-markdown-blockquotes
 * @exampleComponent limel-example-markdown-horizontal-rule
 * @exampleComponent limel-example-markdown-custom-component
 * @exampleComponent limel-example-markdown-custom-component-with-json-props
 * @exampleComponent limel-example-markdown-remove-empty-paragraphs
 * @exampleComponent limel-example-markdown-adapt-color-contrast
 * @exampleComponent limel-example-markdown-composite
 */
export declare class Markdown {
    /**
     * The input text. Treated as GitHub Flavored Markdown, with the addition
     * that any included HTML will be parsed and rendered as HTML, rather than
     * as text.
     */
    value: string;
    /**
     * Additional whitelisted custom elements to render inside markdown.
     *
     * A built-in set of lime-elements components (such as `limel-chip`,
     * `limel-icon`, `limel-badge`, `limel-callout`, etc.) is always
     * allowed by default. Any entries provided here are **merged** with
     * those defaults — if both define the same `tagName`, their
     * attributes are combined.
     *
     * Can also be set via `limel-config`. Setting this property will
     * override the global config.
     *
     * JSON attribute values that contain URL-bearing properties
     * (`href`, `src`, `cite`, `longDesc`) are automatically sanitized
     * using the same protocol allowlists as rehype-sanitize. URLs with
     * dangerous schemes (e.g. `javascript:`, `data:`) are removed
     * (with a console warning).
     *
     * @alpha
     */
    whitelist?: CustomElementDefinition[];
    /**
     * Enable lazy loading for images
     */
    lazyLoadImages: boolean;
    /**
     * Set to `false` to preserve empty paragraphs before rendering.
     * Empty paragraphs are paragraphs that do not contain
     * any meaningful content (text, images, etc.), or only contain
     * whitespace (`<br />` or `&nbsp;`).
     */
    removeEmptyParagraphs: boolean;
    /**
     * Adapt rendered inline `color:` declarations to the surrounding
     * surface. After each markdown re-render the component walks the
     * rendered DOM and removes any inline `color` whose contrast against
     * the resolved background falls below WCAG 3:1, letting the surface's
     * themed text color inherit through. Brand colors that already meet
     * contrast are left alone.
     *
     * Default `false` so the component remains a neutral renderer; turn
     * this on for surfaces that render externally-authored content
     * (e.g. imported email bodies) where the host application's theme
     * drives the surrounding text color.
     */
    adaptColorContrast: boolean;
    textChanged(): Promise<void>;
    handleWhitelistChange(): Promise<void>;
    handleRemoveEmptyParagraphsChange(): Promise<void>;
    handleAdaptColorContrastChange(): Promise<void>;
    private rootElement;
    private imageIntersectionObserver;
    private cachedConsumerWhitelist?;
    private cachedCombinedWhitelist?;
    componentDidLoad(): Promise<void>;
    disconnectedCallback(): void;
    render(): any;
    private setupImageIntersectionObserver;
    private cleanupImageIntersectionObserver;
}
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