import type { VoiceEmbedding, VoiceTensor } from "./types.js";
/** Normalise a voice name and reject blank ones. */
export declare function assertVoiceName(name: string): string;
/** Reject embeddings that carry no data. */
export declare function assertEmbedding(embedding: VoiceEmbedding): VoiceEmbedding;
/** Defensive copy so stores never alias the caller's buffers. */
export declare function cloneEmbedding(embedding: VoiceEmbedding): VoiceEmbedding;
/** Deep copy a tensor map, including its typed array payloads. */
export declare function cloneTensors(tensors: Readonly<Record<string, VoiceTensor>>): Record<string, VoiceTensor>;
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