import type { Bridge, BridgeEnvironment, ContentBridgeConfig } from "./core/types.js";
export type { Bridge, BridgeEnvironment, ContentBridgeConfig, Envelope, EnvelopeKind, FitPayload, MessageContext, MessageHandler, PostTarget, RequestOptions, ResizePayload, Transport, } from "./core/types.js";
export { NativeTransport, WindowTransport, detectNativeHost, type NativePlatform, } from "./core/transport.js";
export { CHANNEL, DEFAULT_PROTOCOL_VERSION, FIT_MESSAGE, NATIVE_CHANNEL, NATIVE_RECEIVE_GLOBAL, RESIZE_MESSAGE, } from "./core/constants.js";
export { startAutoResize, type AutoResizeOptions } from "./core/auto-resize.js";
/**
 * Create the content side of the bridge and immediately begin the handshake.
 *
 * The transport is auto-selected: a native WebView channel (iOS/Android) if one is
 * detected on the window, otherwise the web `window.postMessage` transport. Pass
 * `environment.transport` to override (e.g. in tests).
 *
 * The IIFE build (`dist/sdk/v<major>/rc-sdk.js`) calls this automatically and
 * assigns the instance to `window.RC`; import this factory directly for advanced
 * or non-injected usage.
 *
 * @example
 * ```ts
 * const rc = createContentBridge({ protocolVersion: 1 });
 * rc.on("ping", (payload) => ({ pong: true, echo: payload }));
 * await rc.whenReady();
 * rc.send("content-ready", { at: Date.now() });
 * ```
 */
export declare function createContentBridge(config?: ContentBridgeConfig, environment?: BridgeEnvironment): Bridge;
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