import type { DatafileContent, EnvironmentKey, ExistingState, HistoryEntry, Commit, CommitHash, EntityType } from "@featurevisor/types";
import type { Scope } from "../config";
export interface DatafileOptions {
    environment: EnvironmentKey | false;
    tag?: string;
    scope?: Scope;
    datafilesDir?: string;
}
export type FeatureEnvironmentProperty = "rules" | "force" | "expose";
export interface FeatureSourcePaths {
    baseFilePath: string;
    environmentFilePaths: Record<string, string>;
}
export declare abstract class Adapter {
    abstract listEntities(entityType: EntityType): Promise<string[]>;
    abstract entityExists(entityType: EntityType, entityKey: string): Promise<boolean>;
    abstract readEntity<T>(entityType: EntityType, entityKey: string): Promise<T>;
    abstract writeEntity<T>(entityType: EntityType, entityKey: string, entity: T): Promise<T>;
    abstract deleteEntity(entityType: EntityType, entityKey: string): Promise<void>;
    abstract readState(environment: EnvironmentKey | false): Promise<ExistingState>;
    abstract writeState(environment: EnvironmentKey | false, existingState: ExistingState): Promise<void>;
    abstract readDatafile(options: DatafileOptions): Promise<DatafileContent>;
    abstract writeDatafile(datafileContent: DatafileContent, options: DatafileOptions): Promise<void>;
    abstract readRevision(): Promise<string>;
    abstract writeRevision(revision: string): Promise<void>;
    abstract listHistoryEntries(entityType?: EntityType, entityKey?: string): Promise<HistoryEntry[]>;
    abstract readCommit(commit: CommitHash, entityType?: EntityType, entityKey?: string): Promise<Commit>;
    getFeatureSourcePaths(_featureKey: string): Promise<FeatureSourcePaths | undefined>;
    getFeaturePropertySourcePath(_featureKey: string, _property: FeatureEnvironmentProperty, _environment?: string): Promise<string | undefined>;
}