/**
     * A `<textarea>` with live syntax highlighting via the CSS Custom Highlight API.
     *
     * The text is rendered twice: an editable, visually-transparent `<textarea>`
     * on top, and a backdrop `<pre>` mirror underneath whose text node receives
     * the highlight ranges. The two share identical box metrics so characters line
     * up exactly, and the backdrop is scroll-synced to the textarea.
     *
     * **Minimal by design**: this is a highlighted input, not a full editor. It
     * does not provide line numbers, tab-to-indent, auto-resize, or undo handling
     * — compose those on top via the spread `...rest` props and `bind:value`.
     *
     * **Experimental** — the Highlight API has limited browser support and cannot
     * render font-weight/font-style. Requires importing `theme_highlight.css`.
     */
import type { SvelteHTMLElements } from 'svelte/elements';
import type { SyntaxStyler } from './syntax_styler.js';
type $$ComponentProps = SvelteHTMLElements['textarea'] & {
    /** The editable source code. Bindable. */
    value?: string;
    /**
     * Language identifier (e.g. 'ts', 'css', 'svelte'). `null` disables
     * highlighting; `undefined` falls back to the default ('svelte').
     */
    lang?: string | null;
    /** Custom `SyntaxStyler` instance (defaults to the global one). */
    syntax_styler?: SyntaxStyler;
    /**
     * Attributes for the wrapper `<div>` — the layout box that the textarea
     * fills and `resize` grows. Use it for sizing/layout classes, `style`,
     * `id`, or container-level handlers. Its `class` is merged with the
     * internal `code_textarea` class; `data-lang` stays component-controlled.
     * (`...rest` spreads onto the `<textarea>`; the backdrop `<pre>` is
     * internal and intentionally not exposed.)
     */
    wrapper_attrs?: SvelteHTMLElements['div'];
};
declare const CodeTextarea: import("svelte").Component<$$ComponentProps, {}, "value">;
type CodeTextarea = ReturnType<typeof CodeTextarea>;
export default CodeTextarea;
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