/** A single line of justified text produced by the layout engine. */
export interface Line {
    /** Exact text to render for this line. */
    text: string;
    /** Text segments used by the layout engine, in visual order for this release. */
    segments: string[];
    /** Words on this line, in order. */
    words: string[];
    /** Per-segment widths in pixels, parallel to `segments`. */
    widths: number[];
    /** Total width of all word boxes (excluding spaces). */
    boxW: number;
    /** Natural interword space width in pixels. */
    spaceWidth: number;
    /** True if this is the last line of the paragraph (left-aligned, not justified). */
    last: boolean;
}
/**
 * A line with an additional `wdth` field for Hz (font-width-axis) justification.
 * When Hz is enabled, each line may use a different `wdth` value to achieve
 * tighter justification by varying the font's width axis.
 */
export interface HzLine extends Line {
    /** The CSS `font-variation-settings: 'wdth'` value used for this line (100 = normal). */
    wdth: number;
}
/** Options for {@link layoutParagraph}. */
export interface LayoutOptions {
    /** The paragraph text to lay out. */
    text: string;
    /** Font size in CSS pixels. */
    fontSize: number;
    /** Target line width in CSS pixels. */
    lineWidth: number;
    /** CSS font-weight. Passed to HarfBuzz for variable font shaping. Default: `400`. */
    fontWeight?: number;
    /** Enable standard ligatures in HarfBuzz shaping. Default: `true`. */
    liga?: boolean;
    /** Optical sizing axis value for HarfBuzz shaping.
     *  - positive number: set opsz to that value
     *  - 0: don't set opsz (matches CSS `font-optical-sizing: none`)
     *  Defaults to `fontSize` (matches CSS `font-optical-sizing: auto`). */
    opsz?: number;
    /** Italic/slant axis value for variable font shaping.
     *  - positive number: set ital=1 and slnt=-value (e.g. 12 for 12° slant)
     *  - 0: upright (default) */
    ital?: number;
    /** Enable automatic hyphenation. Default: `false`. */
    hyphenate?: boolean;
    /** ISO 639-1 language code for hyphenation (e.g. `"en"`, `"de"`, `"fr"`).
     *  Also passed through for language-sensitive shaping. Default: `"en"`. */
    lang?: string;
    /** Text direction metadata. Default: `"auto"`. */
    dir?: "auto" | "ltr" | "rtl";
    /** CSS writing-mode metadata. KP optimization is horizontal-width based. */
    writingMode?: "horizontal-tb" | "vertical-rl" | "vertical-lr";
    /**
     * Similarity demerits penalise adjacent lines with very different
     * tightness. Set to 0 to disable. Default: `2000`.
     */
    similarityDemerits?: number;
    /**
     * Enable Hz-program justification using the font's `wdth` axis.
     * Provide the min/max wdth values the font supports.
     * When omitted, Hz is disabled.
     */
    hz?: {
        min: number;
        max: number;
    };
}
/**
 * Input accepted by {@link init} for loading the WASM module.
 * Matches the wasm-pack generated `InitInput` union.
 */
export type InitInput = RequestInfo | URL | Response | BufferSource | WebAssembly.Module;
/** Font or hyphenation bytes accepted by the core layout APIs. */
export type BinaryData = BufferSource;
//# sourceMappingURL=types.d.ts.map