/** Base class for deterministic HTTP module body validation failures. */
export declare class HttpModuleBodyError extends Error {
    constructor(message: string, options?: ErrorOptions);
}
/** Raised when an HTTP module exceeds its caller-owned response limit. */
export declare class HttpModuleBodyTooLargeError extends HttpModuleBodyError {
    readonly maxBytes: number;
    constructor(maxBytes: number);
}
/** Raised when an HTTP module is not valid UTF-8 source text. */
export declare class HttpModuleBodyEncodingError extends HttpModuleBodyError {
    constructor(options?: ErrorOptions);
}
/**
 * Read one HTTP module response as strict UTF-8 without buffering more than
 * `maxBytes + 1`. The extra probe byte distinguishes an exact-limit body from
 * an oversized body while the shared prefix reader cancels unread data.
 */
export declare function readHttpModuleText(response: Response, maxBytes: number, abortSignal?: AbortSignal): Promise<string>;
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