import { Message, MessageMap, NoMeta, TwistersBuffer, TwistersOptions } from './types';
import { SpinnerLoop } from './utils';
export declare type ForEachMessageCallback<Meta> = (message: Message<Meta>, name: string, allMessages: MessageMap<Meta>) => void;
/**
 * The function used to render messages if a render function is not defined by the Message object.
 */
export declare function defaultRender<Meta>(message: Message<Meta>, frame: string | null): string;
export declare class Twisters<Meta = NoMeta> {
    options: TwistersOptions<Meta>;
    spinnerLoop: SpinnerLoop;
    /** @deprecated Please reference `options.buffer` instead */
    lineBuffer: TwistersBuffer;
    protected messages: MessageMap<Meta>;
    /**
     * Create new Twisters instance
     * @param options
     * @param buffer __DEPRECATED__ Please define `buffer` in `options` instead of passing it as the second constructor parameter
     */
    constructor(options?: Partial<TwistersOptions<Meta>>, buffer?: TwistersBuffer);
    /**
     * Get buffered message by name.
     */
    pick(name: string): Message<Meta> | undefined;
    /**
     * Get buffered message count.
     */
    messageCount(): number;
    /**
     * Iterate over buffered messages and invoke the callback for each one.
     */
    forEachMessage(callback: ForEachMessageCallback<Meta>): void;
    /**
     * Returns true if any of the buffered messages are active, otherwise false.
     */
    hasActiveMessage(): boolean;
    /**
     * Add/update a message
     *
     * @remarks Message content is not cached by default.
     * **This means that message text must be provided to subsequent `put` calls,
     * even if the text is unchanged.**
     * See {@Link https://github.com/adamjarret/twisters/blob/master/packages/examples-js/bin/custom-cache.js | custom-cache.js example} to update messages using only changed attributes.
     */
    put(name: string, messageOpt?: Partial<Message<Meta>>): Message<Meta>;
    /**
     * Log an inactive message
     * (convenience function equivalent to `put('text', { active: false })`)
     */
    log(text: string, messageOpt?: Partial<Message<Meta>>): Message<Meta>;
    /**
     * Remove a buffered message by name
     * (convenience function equivalent to `put('name', { removed: true })`)
     * @returns The existing message that was removed or undefined if no message was found for the provided key
     */
    remove(name: string): Message<Meta> | undefined;
    /**
     * Flush messages to stream.
     * @remarks This is called automatically if the `flushInactive` option is true.
     * Otherwise this must be called manually when all messages have finished.
     */
    flush(): void;
    protected refresh(): void;
    protected updateBuffer(frame?: string): void;
}
export default Twisters;