import Stream from 'stream';
import type { JsonValue } from 'type-fest';
import type { WhookEncoders, WhookDecoders } from '../index.js';
export declare const DEFAULT_DEBUG_NODE_ENVS: string[];
export declare const DEFAULT_BUFFER_LIMIT = "500kB";
export declare const DEFAULT_PARSERS: {
    'application/json': (content: string) => JsonValue;
    'text/plain': (content: string) => JsonValue;
    'application/x-www-form-urlencoded': (content: string) => JsonValue;
};
export declare const DEFAULT_STRINGIFYERS: {
    'application/json': (content: JsonValue) => string;
    'text/plain': typeof ensureString;
    'application/x-www-form-urlencoded': (content: JsonValue) => string;
};
export declare const DEFAULT_DECODERS: WhookDecoders<Stream.Transform>;
export declare const DEFAULT_ENCODERS: WhookEncoders<Stream.Transform>;
declare function ensureString(maybeString: unknown): string;
export {};