import { UserError } from "../../toolcraft/dist/index.js";
import type { OpenApiDocument } from "./generate.js";
export interface OpenApiSourceFileSystem {
    readFile(filePath: string, encoding: BufferEncoding): Promise<string>;
}
export interface OpenApiSourceServices {
    cwd: string;
    fetch: typeof globalThis.fetch;
    fs: OpenApiSourceFileSystem;
}
export interface OpenApiHttpSourceOptions {
    etag?: string;
    timeoutMs?: number;
}
export type OpenApiHttpSourceResult = {
    status: "modified";
    sourceText: string;
    etag?: string;
    cacheControl?: string;
    age?: string;
} | {
    status: "not-modified";
    etag?: string;
    cacheControl?: string;
    age?: string;
};
export declare class OpenApiHttpStatusError extends UserError {
}
export declare class OpenApiTransportError extends UserError {
}
export declare class OpenApiTimeoutError extends OpenApiTransportError {
    readonly timeoutMs: number;
    constructor(message: string, timeoutMs: number, options?: ErrorOptions);
}
export declare function readOpenApiSourceText(input: string | URL, services: OpenApiSourceServices): Promise<string>;
export declare function fetchOpenApiHttpSource(inputUrl: URL, fetch: typeof globalThis.fetch, options?: OpenApiHttpSourceOptions): Promise<OpenApiHttpSourceResult>;
export declare function parseOpenApiDocument(sourceText: string, input: string | URL): OpenApiDocument;