import { Source } from '@orbit/data';
import { Coordinator, ActivationOptions, LogLevel } from './coordinator';
export interface StrategyOptions {
    /**
     * Name of strategy.
     *
     * Used to uniquely identify this strategy in a coordinator's collection.
     */
    name?: string;
    /**
     * The names of sources to include in this strategy. Leave undefined
     * to include all sources registered with a coordinator.
     */
    sources?: string[];
    /**
     * The prefix to use for logging from this strategy.
     *
     * Defaults to `[${name}]`.
     */
    logPrefix?: string;
    /**
     * A specific log level for this strategy.
     *
     * Overrides the log level used when activating the coordinator.
     */
    logLevel?: LogLevel;
}
export declare abstract class Strategy {
    protected _name: string;
    protected _coordinator?: Coordinator;
    protected _sourceNames?: string[];
    protected _sources: Source[];
    protected _customLogLevel?: LogLevel;
    protected _logLevel?: LogLevel;
    protected _logPrefix: string;
    constructor(options?: StrategyOptions);
    activate(coordinator: Coordinator, options?: ActivationOptions): Promise<void>;
    deactivate(): Promise<void>;
    beforeSourceActivation(): Promise<void>;
    afterSourceActivation(): Promise<void>;
    beforeSourceDeactivation(): Promise<void>;
    afterSourceDeactivation(): Promise<void>;
    get name(): string;
    get coordinator(): Coordinator | undefined;
    get sources(): Source[];
    get logPrefix(): string;
    get logLevel(): LogLevel | undefined;
    protected getSourceName(source: Source): string;
}