import { IDictionary } from "../types/common.types";
type postMessagePrimitive = string | number | boolean | null | undefined | bigint;
type postMessageValue = postMessagePrimitive | Date | RegExp | ArrayBuffer | ArrayBufferView | Blob | File | postMessageValue[] | Map<postMessageValue, postMessageValue> | Set<postMessageValue> | {
    [key: string]: postMessageValue;
};
type generic = {
    type: string;
} & IDictionary<postMessageValue>;
type resize = {
    type: "SOS_RESIZE_IFRAME";
    height: number;
    params?: IDictionary<postMessageValue>;
};
type visible = {
    type: "SOS_VISIBILITY_CHANGE";
    isVisible: boolean;
    params?: IDictionary<postMessageValue>;
};
type syncPostMessageValues = resize | visible;
type knownPostMessageType = syncPostMessageValues["type"];
type customPostMessageType = string & {};
type genericMessage<T extends customPostMessageType> = Omit<generic, "type"> & {
    type: T extends knownPostMessageType ? never : T;
};
/** Listen to a known message type */
export declare function postMessageListener<T extends knownPostMessageType>(type: T, handler: (data: Extract<syncPostMessageValues, {
    type: T;
}>) => void): {
    dispose: () => void;
};
/** Listen to an unknown message type - you must send in a value for T that has a type that matches the type parameter. For example:
 * postMessageListener<{ type: "m1", param: number }>("m1", data => console.log(data.param));
 */
export declare function postMessageListener<T extends genericMessage<customPostMessageType> = never>(type: T["type"] extends knownPostMessageType ? never : T["type"], handler: (data: T) => void): {
    dispose: () => void;
};
/** Send a known message type */
export declare function postMessageSender<T extends knownPostMessageType>(
/** window.parent, window.top, or iframe ID */
target: Window | HTMLIFrameElement, data: Extract<syncPostMessageValues, {
    type: T;
}>): void;
/** Send an unknown message type, data value will be generic */
export declare function postMessageSender<T extends customPostMessageType = never>(
/** window.parent, window.top, or iframe ID */
target: Window | HTMLIFrameElement, data: genericMessage<T>): void;
export {};
/** Types were carefully constructed to allow caller to have auto complete options for type while being able to pass other values
 * postMessageSender(window, { type: "xxx", a: 1 });
 * postMessageSender(window, { type: "SOS_RESIZE_IFRAME", height: 1 });
 * postMessageSender(window, { type: "SOS_VISIBILITY_CHANGE", isVisible: false });
 * and
 * postMessageListener("SOS_RESIZE_IFRAME", data => data.height);
 * postMessageListener<{ type: "xxx", param: number }>("xxx", data => {
 *     console.log(data.param);
 * });
 */