/** Route schema: a valibot schema or raw JSON Schema. */
export type SchemaSource = ValibotSchema | JsonSchemaObject;
/** The minimal valibot schema shape we detect at runtime. */
export interface ValibotSchema {
    readonly '~standard'?: unknown;
    readonly kind?: string;
    readonly '~run'?: unknown;
}
/** The slice of JSON Schema we care about (everything else is left alone). */
export interface JsonSchemaObject {
    properties?: Record<string, unknown>;
    [key: string]: unknown;
}
/** A single validation problem in the `400` response format (§6b). */
export interface ValidationIssue {
    in: IssueLocation;
    path: string;
    message: string;
    code: string;
}
/** Where exactly the mismatch happened. */
export type IssueLocation = 'body' | 'query' | 'params';
/** The valibot issue shape we rely on. */
interface ValibotIssue {
    path?: ReadonlyArray<{
        key?: unknown;
    }>;
    message: string;
    type?: string;
}
/** The result of valibot's `safeParse`. */
interface ValibotParseResult {
    success: boolean;
    output?: unknown;
    issues?: ReadonlyArray<ValibotIssue>;
}
/** Load the valibot dependencies. Called from `listen()` when schemas are present. */
export declare function loadSchemaDeps(): Promise<void>;
/** Is this a valibot schema? (Standard Schema / valibot's internal markers). */
export declare function isValibot(s: unknown): s is ValibotSchema;
/** Schema → JSON Schema string (the structural part, for Rust). */
export declare function toJsonSchemaString(schema: SchemaSource | null | undefined): string | undefined;
/** The set of top-level property names (used for response stripping). */
export declare function topProps(schema: SchemaSource | null | undefined): Set<string> | null;
/** valibot safeParse (for transform/refine during the preValidation stage). */
export declare function valibotSafeParse(schema: ValibotSchema, data: unknown): ValibotParseResult;
/** valibot issues → a machine-readable list `[{ in, path, message, code }]`. */
export declare function valibotIssues(issues: ReadonlyArray<ValibotIssue>, location: IssueLocation): ValidationIssue[];
export {};
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