import type { LintMessageWithFile } from "../types/index.js";
/**
 * Structurally-typed interfaces compatible with shell RuleLevelMap.
 * Using structural typing avoids core -> shell dependency.
 */
export interface RuleLevel {
    readonly level: number;
    readonly name: string;
}
export interface RuleLevelMapLike {
    readonly explicitRules: ReadonlyMap<string, RuleLevel>;
    readonly allLevel?: RuleLevel;
}
/**
 * Get rule id from lint message in a pure, cross-source way.
 *
 * @pure true
 * @invariant m.source ∈ {typescript, eslint, biome} (guaranteed by type system)
 * @complexity O(1)
 */
export declare function ruleIdOfCore(m: LintMessageWithFile): string;
/**
 * Compute numeric priority level for a message using provided mapping.
 *
 * @pure true
 * @invariant result ∈ [0, 5]
 * @complexity O(1) - Map lookup
 * @default 2 (error) if not mapped
 */
export declare function getPriorityLevel(m: LintMessageWithFile, ruleLevelMap: RuleLevelMapLike | null): number;
/**
 * Compute human-readable priority name for a message using provided mapping.
 *
 * @pure true
 * @invariant result.length > 0
 * @complexity O(1) - Map lookup
 * @default "Critical Compiler Errors" if not mapped
 */
export declare function getPriorityName(m: LintMessageWithFile, ruleLevelMap: RuleLevelMapLike | null): string;
/**
 * Group messages by numeric level using pipe for composability.
 *
 * @pure true
 * @invariant result.size <= messages.length
 * @complexity O(n) где n = messages.length
 *
 * @example
 * ```ts
 * import { pipe } from "effect";
 *
 * const grouped = groupByLevel(messages, config);
 * // Uses pipe internally for functional composition
 * ```
 */
export declare function groupByLevel(messages: readonly LintMessageWithFile[], ruleLevelMap: RuleLevelMapLike | null): Map<number, LintMessageWithFile[]>;
/**
 * Group top messages (first 15) by section name using pipe.
 *
 * @pure true
 * @invariant result.size <= 15
 * @complexity O(min(n, 15)) где n = messages.length
 *
 * @example
 * ```ts
 * // Functional composition with pipe
 * const sections = pipe(
 *   messages,
 *   msgs => msgs.slice(0, 15),
 *   msgs => groupBySections(msgs, config)
 * );
 * ```
 */
export declare const groupBySections: (messages: readonly LintMessageWithFile[], ruleLevelMap: RuleLevelMapLike | null) => Map<string, LintMessageWithFile[]>;
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