export interface ErrorScorable {
    title: string;
    url: string;
    snippet: string;
}
/**
 * Extract atomic error tokens from a query by shape. Returns the tokens in
 * their surface form (uppercase), de-duplicated, order-preserving. Empty when
 * the query carries no atomic error token.
 */
export declare function extractErrorTokens(query: string): string[];
/**
 * True when the query carries at least one atomic error token. This is the
 * error-intent gate: it fires ONLY on genuine error strings, never on ordinary
 * acronym or single-uppercase-word queries.
 */
export declare function hasErrorIntent(query: string): boolean;
/**
 * Per-result survival predicate: true when any atomic error token appears in
 * the result's title, snippet, or URL (case-insensitive). A result that
 * mentions none of the tokens is off-target junk for an error-intent query.
 */
export declare function resultMatchesErrorToken(result: ErrorScorable, tokens: string[]): boolean;
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