import type { Font } from "../font/font.ts";
import type { AnyGposLookup } from "../font/tables/gpos.ts";
import type { AnyGsubLookup } from "../font/tables/gsub.ts";
import type { Tag } from "../types.ts";
/** Feature with optional value */
export interface ShapeFeature {
    tag: Tag;
    enabled: boolean;
}
/** Lookup entry with index */
export interface LookupEntry<T> {
    index: number;
    lookup: T;
}
/** Collected lookups for shaping */
export interface ShapePlan {
    script: Tag;
    language: Tag | null;
    direction: "ltr" | "rtl";
    /** GSUB lookups to apply, in order */
    gsubLookups: LookupEntry<AnyGsubLookup>[];
    /** GPOS lookups to apply, in order */
    gposLookups: LookupEntry<AnyGposLookup>[];
    /** Fast O(1) lookup by index for nested GSUB lookups */
    gsubLookupMap: Map<number, LookupEntry<AnyGsubLookup>>;
    /** Fast O(1) lookup by index for nested GPOS lookups */
    gposLookupMap: Map<number, LookupEntry<AnyGposLookup>>;
}
/** Get or create a cached shape plan */
export declare function getOrCreateShapePlan(font: Font, script: string, language: string | null, direction: "ltr" | "rtl", userFeatures?: ShapeFeature[], axisCoords?: number[] | null): ShapePlan;
/** Create a shape plan for the given font and settings */
export declare function createShapePlan(font: Font, script: string, language: string | null, direction: "ltr" | "rtl", userFeatures?: ShapeFeature[], axisCoords?: number[] | null): ShapePlan;