import { Callback, Dispatch, IObserverHandle, Message } from "@hpcc-js/util";
import { OJSRuntime } from "./ojsRuntime";
import { OJSVariableMessageType } from "./util";
export interface IObserver {
    pending(): any;
    fulfilled(value: any): any;
    rejected(error: any): any;
}
export declare class OJSVariableMessage extends Message {
    variable: OJSVariable;
    type: OJSVariableMessageType;
    value: any;
    constructor(variable: OJSVariable, type: OJSVariableMessageType, value: any);
    get canConflate(): boolean;
    conflate(other: OJSVariableMessage): boolean;
}
export interface Value {
    type: OJSVariableMessageType;
    value: any;
}
export interface VariableValue {
    variable: OJSVariable;
    type: OJSVariableMessageType;
    value: any;
}
export declare class OJSVariable implements IObserver {
    protected _ojsRuntime: OJSRuntime;
    protected _module: any;
    protected _cell: any;
    protected _dispatcher: Dispatch<OJSVariableMessage>;
    private _id;
    private _uid;
    private _inspector;
    private _latest;
    private _value;
    private _valueResolve;
    constructor(_ojsRuntime: OJSRuntime, _module: any, _cell: any, foreign?: boolean);
    watch(callback: Callback<OJSVariableMessage>): IObserverHandle;
    pending(): void;
    fulfilled(value: any): void;
    rejected(error: any): void;
    private variable;
    id(): string;
    uid(): string;
    pos(): {
        start: number;
        end: number;
    };
    value(): Promise<Value>;
    latestValue(): Value;
}
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