/** One problem found in a config file: the dotted path and a human-readable reason. */
export interface ConfigIssue {
    path: string;
    issue: string;
}
/** Whether a dotted path is part of the known config schema (leaf or intermediate). */
export declare function isKnownConfigPath(dotted: string): boolean;
/**
 * Write-time validation for `config set`. An enum, number, or object leaf whose
 * value has the wrong kind is a hard rejection (throws). An unknown path is
 * permitted but reported, so `config set` can warn and still write (keeping
 * forward-compatible and third-party keys usable). Returns `{ unknownPath }`.
 */
export declare function validateConfigSet(dotted: string, value: unknown): {
    unknownPath: boolean;
};
/**
 * Strict validation for `config validate`: walks a parsed config and collects
 * every unknown key and out-of-enum value, plus a `schemaVersion` that is newer
 * than this CLI supports. Never throws; returns the full list so the caller can
 * report all problems at once.
 */
export declare function findConfigIssues(config: Record<string, unknown>, supportedSchemaVersion: number): ConfigIssue[];
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