/**
 * Ghostty-parity defaults for the restty engine.
 *
 * Restty embeds libghostty-vt (WASM) + GPU text; it is not the Ghostty app.
 * This module maps Ghostty’s known-good defaults onto restty’s public config
 * so avocado’s restty path feels as close as the web stack allows.
 *
 * References:
 * - Ghostty ships JetBrains Mono + built-in Nerd Fonts, default dark palette
 * - restty DEFAULT_FONT_INPUTS + getBuiltinTheme("Ghostty Default Style Dark")
 * - restty TerminalConfig (renderer, ligatures, alphaBlending, nerdIconScale, …)
 */
import type { TerminalViewTheme } from './types.js';
import { type ResttyFontInputLike } from './bundled-font.js';
/** Ghostty’s stock dark palette name in restty’s builtin catalog. */
export declare const GHOSTTY_DEFAULT_THEME_NAME = "Ghostty Default Style Dark";
/**
 * Ghostty default font-size is 13 (points). We pass CSS px; at 1x they match
 * closely enough that restty cells look Ghostty-sized.
 */
export declare const GHOSTTY_DEFAULT_FONT_SIZE = 13;
/** Ghostty default window padding (px). Applied as host inset around the canvas. */
export declare const GHOSTTY_WINDOW_PADDING_PX = 2;
/** Approximate Ghostty default background (#282c34). */
export declare const GHOSTTY_DEFAULT_BG = "#282c34";
export declare const GHOSTTY_DEFAULT_FG = "#ffffff";
export type ResttyRendererPref = 'auto' | 'webgpu' | 'webgl2';
export type GhosttyParityOptions = {
    fontSize?: number;
    /** restty builtin theme name (default: Ghostty Default Style Dark). */
    ghosttyThemeName?: string;
    /** Engine-neutral avocado theme bag → converted to GhosttyTheme when set. */
    theme?: TerminalViewTheme;
    /** Prefer WebGPU (Ghostty≈Metal). Default auto. */
    renderer?: ResttyRendererPref;
    ligatures?: boolean;
    /** TrueType atlas hinting (Ghostty/mac CoreText differs; default false). */
    fontHinting?: boolean;
    fontHintTarget?: 'auto' | 'light' | 'normal';
    /**
     * How fontSize maps to design units.
     * Ghostty sizes by face height; restty "height" tracks that more closely.
     */
    fontSizeMode?: 'em' | 'height';
    /**
     * GPU alpha blending. Default `native` matches Ghostty’s macOS default
     * (Display-P3-style native blend). `linear` / `linear-corrected` often
     * wash out saturated UI (e.g. Claude effort bars).
     */
    alphaBlending?: 'native' | 'linear' | 'linear-corrected';
    nerdIconScale?: number;
    /** Scrollback cap in bytes (restty/Ghostty-scale default 10MB). */
    maxScrollbackBytes?: number;
};
export type BuiltGhosttyParity = {
    fonts: ResttyFontInputLike[];
    theme: unknown | undefined;
    themeSourceLabel: string | undefined;
    terminal: Record<string, unknown>;
    hostPaddingPx: number;
    hostBackground: string;
};
type ThemeColor = {
    r: number;
    g: number;
    b: number;
    a?: number;
};
/**
 * Convert avocado’s xterm-style theme bag into a GhosttyTheme-shaped object
 * restty’s applyTheme / terminal.theme accept.
 */
export declare function terminalViewThemeToGhostty(theme: TerminalViewTheme, name?: string): {
    name: string;
    colors: {
        background?: ThemeColor;
        foreground?: ThemeColor;
        cursor?: ThemeColor;
        cursorText?: ThemeColor;
        selectionBackground?: ThemeColor;
        palette: Array<ThemeColor | undefined>;
    };
    raw: Record<string, string>;
};
export type ResttyThemeLoader = {
    getBuiltinTheme?: (name: string) => unknown;
};
/**
 * Build fonts + terminal config + host chrome for maximum Ghostty likeness.
 */
export declare function buildGhosttyParity(options: GhosttyParityOptions, resttyMod?: ResttyThemeLoader | null): Promise<BuiltGhosttyParity>;
export {};
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