import { SampleClass } from '../../types/auto-group';
/**
 * Token-length pre-grouping.
 *
 * After type classification (`detectClass`), members of one class can still have
 * different token counts — e.g. a Plasma batch where some names carry an extra
 * descriptor field. Splitting each class so every member shares the same token
 * length is the "group same token-length sample, then extract tokens inside the
 * group" step: it guarantees `buildClassSchema` sees a rectangular token matrix,
 * so column index N means the same field for every sample in the group.
 *
 * Each output class carries `tokenLength`; `classKey` folds that into the schema
 * key so length-split classes never collide. The label only gains a `· N fields`
 * suffix when a (kind, subKind) genuinely spans more than one length, keeping the
 * common (uniform) case visually identical to before.
 */
export declare function splitByTokenLength(classes: SampleClass[], tokenized: string[][]): SampleClass[];