import type { PeekableIterator } from './PeekableGenerator.js';
/**
 * Minimal glyph info for performance-focused text shaping
 */
export interface SimpleGlyphInfo {
    /**
     * Whether the character was successfully mapped to a glyph
     */
    mapped: boolean;
    /**
     * Unicode codepoint
     */
    codepoint: number;
    /**
     * How much to advance horizontally after rendering this glyph
     */
    xAdvance: number;
}
/**
 * Minimal font shaper properties
 */
export interface FontShaperProps {
    /**
     * Font family name
     */
    fontFamily: string;
    /**
     * Font size in pixels
     */
    fontSize: number;
    /**
     * Letter spacing in pixels
     */
    letterSpacing: number;
}
/**
 * Functional font shaper interface
 */
export interface FontShaper {
    shapeText: (props: FontShaperProps, codepoints: PeekableIterator<number>) => Generator<SimpleGlyphInfo, void>;
}
/**
 * Create a simple SDF font shaper
 */
export declare const createSdfFontShaper: () => FontShaper;