import type { OpenAPIV3 } from 'openapi-types';
import type { OpenApiObjectSchema, OpenApiSchema, OpenApiSchemaProperties } from '../openapi-types';
import type { OpenApiDocumentRefs } from './refs';
import type { ParserOptions } from './options';
/**
 * Parse the original schema or reference object to a serializable schema.
 * @param schema - Originally provided schema or reference object.
 * @param refs - Object representing cross references throughout the document.
 * @param options - Options that were set for service generation.
 * @returns The parsed schema.
 * @internal
 */
export declare function parseSchema(schema: OpenAPIV3.SchemaObject | OpenAPIV3.ReferenceObject | undefined, refs: OpenApiDocumentRefs, options: ParserOptions): OpenApiSchema;
/**
 * @internal
 * Parse a schema to an object schema.
 * @param schema - Original schema representing an object.
 * @param refs - Object representing cross references throughout the document.
 * @param options - Options that were set for service generation.
 * @returns The recursively parsed object schema.
 */
export declare function parseObjectSchema(schema: OpenAPIV3.NonArraySchemaObject, refs: OpenApiDocumentRefs, options: ParserOptions): OpenApiObjectSchema;
/**
 * @internal
 */
export declare function normalizeSchema(schema: OpenAPIV3.NonArraySchemaObject, xOf: 'oneOf' | 'allOf' | 'anyOf'): OpenAPIV3.NonArraySchemaObject;
/**
 * Parse schema properties e.g. 'maxLength', 'minimum', etc.
 * @param schema - Original schema representing a ref or schema object.
 * @returns The parsed schema properties object.
 * @internal
 */
export declare function parseSchemaProperties(schema: OpenAPIV3.ReferenceObject | OpenAPIV3.SchemaObject): OpenApiSchemaProperties;