import type { ComponentId } from '@ecsia/schema';
import type { Buffers } from '../memory/index.js';
import type { Signature } from '../storage/signature.js';
/** Main-thread / serial-phase gate. Workers establish membership from the archetype signature. */
export type PhaseGate = () => 'serial' | 'wave';
export declare class Bitmask {
    #private;
    constructor(buffers: Buffers, componentCount: number, maxEntities: number, phase: PhaseGate);
    get stride(): number;
    /** O(1) membership point test for a single entity index. */
    bitmaskHas(index: number, c: ComponentId): boolean;
    /** Coherence with the table: set added bits, clear removed bits, after a serial migration. */
    bitmaskApplyDelta(index: number, fromSig: Signature, toSig: Signature): void;
    /** Clear all of an entity's membership words on despawn. O(stride). */
    bitmaskClear(index: number): void;
    /** Zero-copy view of one entity's fixed-stride shape words (for the single-entity matcher ). */
    entityShapeWords(index: number): Uint32Array;
    /**
     * ROLLBACK-ONLY (@ecsia/rollback capture): copy the membership words of entity indices
     * [0, indexCount) into `out` and clone the out-of-stride overflow into `outSparse`. Returns the
     * number of words written. There is NO rebuild-from-archetypes path for either half, so both are
     * part of the image.
     */
    captureInto(out: Uint32Array, indexCount: number, outSparse: Map<number, Set<number>>): number;
    /**
     * ROLLBACK-ONLY (@ecsia/rollback restore): write the captured words back over indices
     * [0, indexCount) and ZERO [indexCount, clearThroughIndex) — indices minted after the checkpoint
     * must lose their bits, or a recycled slot inherits membership it never had.
     */
    restoreFrom(src: Uint32Array, indexCount: number, clearThroughIndex: number, sparse: ReadonlyMap<number, ReadonlySet<number>>): void;
    /** Re-publish the region view after a fallback grow (the region length-tracks on the primary path). */
    rebind(): void;
}
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