import { Display } from 'westfield-runtime-server';
import Globals from './Globals';
import { CompositorSession } from './index';
import { FrameDecoder } from './remotestreaming/buffer-decoder';
import Renderer from './render/Renderer';
import { UserShellApi } from './UserShellApi';
export interface LogFn {
    <T extends object>(obj: T, msg?: string, ...args: any[]): void;
    (msg: string, ...args: any[]): void;
}
export declare type GreenfieldLogger = {
    /**
     * Log at `'error'` level the given msg. If the first argument is an object, all its properties will be included in the JSON line.
     * If more args follows `msg`, these will be used to format `msg` using `util.format`.
     *
     * @typeParam T: the interface of the object being serialized. Default is object.
     * @param obj: object to be serialized
     * @param msg: the log message to write
     * @param ...args: format string values when `msg` is a format string
     */
    error: LogFn;
    /**
     * Log at `'warn'` level the given msg. If the first argument is an object, all its properties will be included in the JSON line.
     * If more args follows `msg`, these will be used to format `msg` using `util.format`.
     *
     * @typeParam T: the interface of the object being serialized. Default is object.
     * @param obj: object to be serialized
     * @param msg: the log message to write
     * @param ...args: format string values when `msg` is a format string
     */
    warn: LogFn;
    /**
     * Log at `'info'` level the given msg. If the first argument is an object, all its properties will be included in the JSON line.
     * If more args follows `msg`, these will be used to format `msg` using `util.format`.
     *
     * @typeParam T: the interface of the object being serialized. Default is object.
     * @param obj: object to be serialized
     * @param msg: the log message to write
     * @param ...args: format string values when `msg` is a format string
     */
    info: LogFn;
    /**
     * Log at `'debug'` level the given msg. If the first argument is an object, all its properties will be included in the JSON line.
     * If more args follows `msg`, these will be used to format `msg` using `util.format`.
     *
     * @typeParam T: the interface of the object being serialized. Default is object.
     * @param obj: object to be serialized
     * @param msg: the log message to write
     * @param ...args: format string values when `msg` is a format string
     */
    debug: LogFn;
    /**
     * Log at `'trace'` level the given msg. If the first argument is an object, all its properties will be included in the JSON line.
     * If more args follows `msg`, these will be used to format `msg` using `util.format`.
     *
     * @typeParam T: the interface of the object being serialized. Default is object.
     * @param obj: object to be serialized
     * @param msg: the log message to write
     * @param ...args: format string values when `msg` is a format string
     */
    trace: LogFn;
};
declare class Session implements CompositorSession {
    readonly display: Display;
    readonly compositorSessionId: string;
    readonly logger: GreenfieldLogger;
    readonly globals: Globals;
    readonly renderer: Renderer;
    readonly userShell: UserShellApi;
    readonly frameDecoder: FrameDecoder;
    private constructor();
    static create(sessionId?: string, logger?: GreenfieldLogger): Promise<Session>;
    terminate(): void;
    flush(): void;
}
export default Session;