import { Options } from './lib/types.js';
import { ParserOptions, ValidationResult } from '@readme/openapi-parser';
import { OpenAPI } from 'openapi-types';
import { getType } from './lib/utils.js';

declare class OASNormalize {
    cache: {
        bundle?: OpenAPI.Document | false;
        convert?: OpenAPI.Document | false;
        deref?: OpenAPI.Document | false;
        load?: Record<string, unknown> | false;
    };
    file: any;
    opts: Options;
    type: ReturnType<typeof getType>;
    constructor(file: any, opts?: Options);
    /**
     * Load and return the API definition that `oas-normalize` was initialized with.
     *
     */
    load(): Promise<Record<string, unknown>>;
    private static convertPostmanToOpenAPI;
    /**
     * Bundle up the given API definition, resolving any external `$ref` pointers in the process.
     *
     */
    bundle(): Promise<OpenAPI.Document>;
    /**
     * Dereference the given API definition.
     *
     */
    dereference(): Promise<OpenAPI.Document>;
    /**
     * Dereference the given API definition.
     *
     * This method is deprecated in favor of `dereference`. It will be removed in a future release.
     *
     * @deprecated
     */
    deref(): Promise<OpenAPI.Document>;
    /**
     * Convert a given API definition to OpenAPI if it is not already.
     *
     */
    convert(): Promise<OpenAPI.Document>;
    /**
     * Validate a given API definition.
     *
     * If supplied a Postman collection it will be converted to OpenAPI first and then run through
     * standard OpenAPI validation.
     *
     */
    validate(opts?: {
        /**
         * Options to supply to our OpenAPI parser. See `@readme/openapi-parser` for documentation.
         * This option is deprecated in favor of the `parser` option on the constructor. It will be
         * removed in a future release.
         *
         * @see {@link https://npm.im/@readme/openapi-parser}
         * @deprecated
         */
        parser?: ParserOptions;
    }): Promise<ValidationResult>;
    /**
     * Retrieve OpenAPI, Swagger, or Postman version information about the supplied API definition.
     *
     */
    version(): Promise<{
        specification: 'openapi' | 'postman' | 'swagger';
        version: string | 'unknown';
    }>;
}

export { OASNormalize as default };