/** A content-addressed id for a binary resource held in a {@link ResourceStore}. */
export type ResourceId = string & {
    readonly __brand: 'resource-id';
};
/**
 * A content-addressed store for the IR's binary payloads (images, fonts). IR
 * trees stay pure JSON and reference bytes by {@link ResourceId}; ids derive
 * from the bytes (a synchronous 64-bit FNV-1a), so identical payloads
 * deduplicate for free and equal documents get equal ids — which keeps IR-level
 * diffs and the byte-identical gates meaningful.
 */
export declare class ResourceStore {
    private readonly byId;
    /**
     * Store bytes and return their content-addressed id. Re-putting identical
     * bytes returns the existing id (deduplication); a hash collision with
     * different bytes probes deterministic `~n` suffixes.
     */
    put(bytes: Uint8Array): ResourceId;
    /** Look up the bytes for an id, or `undefined` when absent. */
    get(id: ResourceId): Uint8Array | undefined;
    /** Whether an id is present in the store. */
    has(id: ResourceId): boolean;
    /** All stored ids, in insertion order. */
    ids(): ReadonlyArray<ResourceId>;
    /** The number of distinct resources stored. */
    get size(): number;
}