import { ProcessAction } from '../actions';
export declare const enum ExecutionState {
    COMPLETED = "COMPLETED",
    ERROR_SEMANTIC = "ERROR-SEMANTIC",
    ERROR_TECHNICAL = "ERROR-TECHNICAL",
    ERROR_UNKNOWN = "ERROR-UNKNOWN",
    ABORTED = "ABORTED",
    TERMINATED = "TERMINATED",
    FAILED = "FAILED",
    SKIPPED = "SKIPPED"
}
export declare type LogState = {
    flowElementId: string;
    tokenId: string;
    executionState: ExecutionState | string;
    startTime?: number;
    endTime?: number;
    errorMessage?: string;
    variableChanges?: {
        [variableName: string]: {
            oldValue?: any;
            newValue: any;
            changedTime: number;
        }[];
    };
    [key: string]: any;
}[];
export declare const DEFAULT_LOG_STATE: LogState;
export declare function logReducer(state: LogState | undefined, action: ProcessAction): LogState;
/**
 * Will use the given log to decide if a specific execution of a flowElement has already ended
 *
 * @param tokenId the token that triggered the execution
 * @param flowElementId the element that was executed
 * @param startTime the time at which this specific execution started
 * @param log the log state to evaluate
 * @returns information if the specific execution has already ended
 */
export declare function isExecutionEnded(tokenId: string, flowElementId: string, startTime: Number | undefined, log: LogState): boolean;
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