/**
 * @type {Readonly<string[]>}
 */
export const builtinTransformerIds: Readonly<string[]>;
export function loadTransformer(id: string, config?: object): Transformer<any, any>;
export function isKnownTransformer(id: string): boolean;
export { Transformer };
export function toTransformer(): OperatorFunction<TransformerConfig, Transformer<any, any>>;
export function validateTransformerChain({ beginWith, endWith, defaultTransformer, defaultTransformerConfig }?: Partial<TransformOptions>): OperatorFunction<Transformer<any, any>, Transformer<any, any>>;
export function runTransformer(source: Observable<any>): (observable: Observable<Transformer<any, any>>) => observable.Observable<any>;
export function compatibleTransformers(sourceType: string): string[];
export type TransformerMeta = {
    id: string;
    description?: string;
    input?: string[];
    output: string;
    alias?: string[];
    defaults?: any;
};
export type Report = import("../../diff/node_modules/@report-toolkit/common/src/report.js").Report;
export type TransformFunction<T, U> = (opts?: any) => import("rxjs").OperatorFunction<T, U>;
export type Observable<T> = observable.Observable<T>;
export type OperatorFunction<T, U> = import("rxjs").OperatorFunction<T, U>;
export type TransformerConfig = {
    id: string;
    config: object;
};
/**
 * for {@link validateTransformerChain}
 */
export type TransformOptions = {
    /**
     * - Begin transformer chain with this type
     */
    beginWith: string;
    /**
     * - End transformer chain with this type
     */
    endWith: string;
    /**
     * - Default transformer
     */
    defaultTransformer: string;
    /**
     * - Default transformer config
     */
    defaultTransformerConfig: object;
};
import { Transformer } from "./transformer.js";
import { observable } from "../../diff/node_modules/@report-toolkit/common/src/index.js";