import type { ProcessedModel } from "./types";
/**
 * Detects companion file relationships among processed models and
 * attaches `companionSet` metadata to each primary entry.
 * Companion-only entries are marked with `isCompanionOnly` so
 * codegen can exclude them from exported model constants.
 *
 * Detection families:
 *   ONNX pairs:
 *     Primary: registryPath ends with `.onnx`
 *     Companion: `${primaryPath}_data` or `${primaryPath}.data`
 *
 *   Bergamot NMT sets (directory-based):
 *     Primary: `model.<langPair>.intgemm.alphas.bin`
 *     Companions in same directory: lex, vocab/srcvocab+trgvocab, metadata
 *
 *   BCI whisper.cpp sets (directory-based):
 *     Primary: `ggml-bci-windowed.bin`
 *     Companion in same directory: `bci-embedder.bin`
 *     The addon resolves the embedder by exact filename next to the model
 *     (`dirname(model)/bci-embedder.bin`), so the two files must be
 *     physically co-located — which the companion-set cache layout guarantees.
 */
export declare function groupCompanionSets(models: ProcessedModel[]): ProcessedModel[];
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