export declare module DspGraph {
    type NodeId = string;
    type NodeType = string;
    type NodeArgument = string | number;
    type NodeArguments = {
        [argumentName: string]: any;
    };
    type PortletId = string;
    type PortletType = 'signal' | 'message';
    interface ConnectionEndpoint {
        readonly nodeId: NodeId;
        readonly portletId: PortletId;
    }
    interface Portlet {
        readonly id: PortletId;
        readonly type: PortletType;
    }
    type PortletMap = {
        [portletId: string]: Portlet;
    };
    type ConnectionEndpointMap = {
        [portletId: string]: Array<ConnectionEndpoint>;
    };
    interface Node<NodeArgsType = NodeArguments> {
        readonly id: NodeId;
        readonly type: NodeType;
        readonly args: NodeArgsType;
        readonly sources: ConnectionEndpointMap;
        readonly sinks: ConnectionEndpointMap;
        readonly inlets: PortletMap;
        readonly outlets: PortletMap;
        /**
         * When true, the node will pull sound through the signal graph.
         * This value is used for signal graph traversal.
         */
        readonly isPullingSignal?: true;
        /**
         * When true, the node will push messages through the message graph.
         * This value is used for signal graph traversal.
         */
        readonly isPushingMessages?: true;
    }
    type Graph = {
        [nodeId: NodeId]: Node;
    };
    type Arrays = {
        [arrayName: string]: Float32Array;
    };
    type GraphTraversal = Array<NodeId>;
    type Connection = [DspGraph.ConnectionEndpoint, DspGraph.ConnectionEndpoint];
}