import { AStepper } from "./astepper.js";
import { TFeatureStep, TWorld } from './defs.js';
import { TOrigin, TProvenanceIdentifier, TStepValue } from '../schema/protocol.js';
import { IQuadStore, TQuad } from "./quad-types.js";
export declare const SHARED_GRAPH = "variables";
export declare const META_GRAPH = "meta";
export declare const OBSERVATION_GRAPH = "observation";
export declare const OBSCURED_VALUE = "[o\u0334b\u0335s\u0335c\u0337u\u0336r\u0338e\u0335d\u0335]";
export declare class FeatureVariables {
    private world;
    private store;
    private values;
    constructor(world: TWorld, initial?: {
        [name: string]: TStepValue;
    });
    getStore(): IQuadStore;
    clear(): void;
    all(): {
        [name: string]: TStepValue;
    };
    toString(): string;
    setJSON(label: string, value: object, origin: TOrigin, source: TFeatureStep): void;
    setForStepper(stepper: string, sv: TStepValue, provenance: TProvenanceIdentifier, namedGraph?: string): void;
    unset(name: string): void;
    set(sv: TStepValue, provenance: TProvenanceIdentifier, namedGraph?: string): void;
    _set(sv: TStepValue, provenance: TProvenanceIdentifier, namedGraph?: string): void;
    /**
     * Resolves a variable and its domain based on its actual origin.
     * Requires explicit options.secure to return the real value of a secret.
     */
    resolveVariable(input: {
        term: string;
        origin: TOrigin;
        domain?: string;
    }, featureStep?: TFeatureStep, steppers?: AStepper[], options?: {
        secure: boolean;
    }): TStepValue;
    getDomainValues(domainName: string): {
        values: unknown[];
        error?: string;
    };
    get(term: string, secure?: boolean): unknown;
    queryQuads(pattern: {
        subject?: string;
        predicate?: string;
        object?: unknown;
        namedGraph?: string;
    }): TQuad[];
    existsQuad(pattern: {
        subject?: string;
        predicate?: string;
        object?: unknown;
        namedGraph?: string;
    }): boolean;
    countQuads(pattern: {
        subject?: string;
        predicate?: string;
        object?: unknown;
        namedGraph?: string;
    }): number;
    addQuad(quad: Omit<TQuad, 'timestamp'>): void;
    removeQuad(pattern: {
        subject?: string;
        predicate?: string;
        object?: unknown;
        namedGraph?: string;
    }): void;
    allQuads(): TQuad[];
    isSecret(name: string): boolean;
    getSecrets(): {
        [name: string]: string;
    };
    private storeAsQuad;
}
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