import type{RetrievalChunk}from'../../ai/types.js';
/** Runtime boundary for public collection rows before a renderer dereferences their fields. */
export declare function isRecord(value:unknown):value is Record<string,unknown>;
/** Identity validation shared by retrieval views with keyed public data. Validation trims only
* to decide whether an identity is blank; retained spelling remains byte-for-byte unchanged. */
export declare function isNonBlankIdentity(value:unknown):value is string;
/** Runtime boundary for retrieval rows before any renderer dereferences their nested source. */
export declare function isValidRetrievalChunk(value:unknown):value is RetrievalChunk;
/** Keeps the first row for every nonblank identity without mutating the input collection. */
export declare function firstByRetrievalIdentity<T>(values:readonly T[],identity:(value:T)=>unknown):T[];
/** Bounded public identifier arrays are stable frozen snapshots after assignment. Cache their
* first-wins nonblank projection so render, lookup, and event paths share one exact sequence. */
export declare function canonicalIdentityList(values:readonly unknown[]):readonly string[];