import { CfgIOWarningSupplier } from "./CfgIOWarningSupplier";
declare type ConfiguraAttribute = "C0nf1gura";
declare type ConfiguraShebang = "arug1fn0C";
declare const CONFIGURA_ATTRIBUTE: ConfiguraAttribute;
export declare type IOManagerListener = (data: unknown) => Promise<void>;
/**
 * The container format used when the environment is globally shared with things
 * outside our control. The "shebang" is a magic string that should prevent from a
 * CfgIOContainer being confused with something else.
 */
export declare type CfgIOContainer = {
    [CONFIGURA_ATTRIBUTE]: ConfiguraShebang;
    messages: {
        [index: string]: unknown;
    };
};
/**
 * Base class for classes handling input and output in globally shared environments.
 */
export declare abstract class CfgIOManager<S> {
    private _warningSuppliers;
    addWarningSupplier(supplier: CfgIOWarningSupplier): void;
    removeWarningSupplier(supplier: CfgIOWarningSupplier): void;
    getWarnings(): string[];
    /**
     * Listen for the message messageKey being received.
     */
    listenForMessage(l: IOManagerListener, messageKey: string): boolean;
    /**
     * Removes the listener
     */
    stopListenForMessage(l: IOManagerListener): boolean;
    static isIOContainer: (data: unknown) => data is CfgIOContainer;
    static hasIOContainerMessageKey: (container: CfgIOContainer, messageKey: string) => boolean;
    static getMessageFromIOContainer: (container: unknown, messageKey: string) => unknown;
    static makeContainer: (messages: {
        [index: string]: unknown;
    }) => CfgIOContainer;
    private _receiveInProgress;
    private static _inhibitAllReceive;
    get receiveInProgress(): boolean;
    private _messageListeners;
    private _getIndexOfMessageListener;
    get hasMessageListeners(): boolean;
    protected _containerListener(data: unknown): void;
    /**
     * Send the data with messageKey. This can for example be pushing or
     * replacing on the history stack or sending a message using the
     * window.message API.
     */
    abstract send(messageKey: string, data: S): void;
}
export {};
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