/**
 * Tracks the state of a workflow execution.
 */
export interface WorkflowState {
    /**
     * The unique key of the workflow execution instance.
     */
    workflowId: string;
    /**
     * Source service the workflow is executing on e.g. Ordermentum or Payments.
     * Workflows cannot execute across machine boundaries (such a change would)
     * require a centralised repository for workflow state
     */
    serviceId: string;
    /**
     * The time the flow execution began.
     * Diagnostics and auditing.
     */
    started: Date;
    /**
     * The time the flow completed
     */
    completed?: Date;
    /**
     * The current step being executed in this flow.
     * This will be the human readable step identifier.
     */
    current: string;
    /**
     * The initial value that started the flow execution.
     * The engine will pass this value to the first step.
     */
    initial: unknown;
    /**
     * Step state tracking.
     * The next step in the chain will be executed with the result
     * of the previous step as its argument.
     */
    results?: Record<string, unknown>;
    /**
     * Diagnostic and auditing tracking of errors that occurred
     */
    errors?: {
        /**
         * Identifier of where the error occurred, which may be in the flow of step
         * executions or while rolling back. The identifier is purposely ambiguous
         * to allow for maximum flexbility in error capturing
         */
        identifier: string;
        /**
         * General representation of a string serialised node Error object.
         */
        error: unknown;
    }[];
}