diff --git a/src/composables/useZoomPanHelper.ts b/src/composables/useZoomPanHelper.ts
index 26458369..7d81375a 100644
--- a/src/composables/useZoomPanHelper.ts
+++ b/src/composables/useZoomPanHelper.ts
@@ -1,76 +1,76 @@
 import { zoomIdentity } from 'd3-zoom'
 import useStore from './useStore'
 import { getRectOfNodes, pointToRendererPoint, getTransformForBounds } from '~/utils'
-import { FitViewParams, FlowTransform, GraphNode, FlowStore, Rect, UseZoomPanHelper, XYPosition } from '~/types'
+import { GraphNode, FlowStore, UseZoomPanHelper, D3Selection } from '~/types'
 
 const DEFAULT_PADDING = 0.1
 
-export default (store: FlowStore = useStore()): UseZoomPanHelper => {
-  return {
-    zoomIn: () => store.d3Selection && store.d3Zoom?.scaleBy(store.d3Selection, 1.2),
-    zoomOut: () => store.d3Selection && store.d3Zoom?.scaleBy(store.d3Selection, 1 / 1.2),
-    zoomTo: (zoomLevel: number) => store.d3Selection && store.d3Zoom?.scaleTo(store.d3Selection, zoomLevel),
-    transform: (transform: FlowTransform) => {
-      const nextTransform = zoomIdentity.translate(transform.x, transform.y).scale(transform.zoom)
-      store.d3Selection && store.d3Zoom?.transform(store.d3Selection, nextTransform)
-    },
-    fitView: (
-      options: FitViewParams = {
-        padding: DEFAULT_PADDING,
-        includeHiddenNodes: false,
-        transitionDuration: 0,
-      },
-    ) => {
-      if (!store.getNodes.length) return
+const transition = (selection: D3Selection, ms = 0) => selection.transition().duration(ms)
 
-      let nodes: GraphNode[] = []
-      if (options.nodes) {
-        nodes = store.nodes.filter((n) => options.nodes?.includes(n.id))
-      }
-      if (!nodes || !nodes.length) {
-        nodes = options.includeHiddenNodes ? store.nodes : store.getNodes
-      }
-      const bounds = getRectOfNodes(nodes)
-      const [x, y, zoom] = getTransformForBounds(
-        bounds,
-        store.dimensions.width,
-        store.dimensions.height,
-        options.minZoom ?? store.minZoom,
-        options.maxZoom ?? store.maxZoom,
-        options.padding ?? DEFAULT_PADDING,
-        options.offset,
-      )
-      const transform = zoomIdentity.translate(x, y).scale(zoom)
-
-      store.d3Selection &&
-        store.d3Zoom?.transform(
-          options.transitionDuration
-            ? store.d3Selection.selection().transition().duration(options.transitionDuration)
-            : store.d3Selection,
-          transform,
-        )
+export default (store: FlowStore = useStore()): UseZoomPanHelper => ({
+  zoomIn: (options) => store.d3Selection && store.d3Zoom?.scaleBy(transition(store.d3Selection, options?.duration), 1.2),
+  zoomOut: (options) => store.d3Selection && store.d3Zoom?.scaleBy(transition(store.d3Selection, options?.duration), 1 / 1.2),
+  zoomTo: (zoomLevel, options) =>
+    store.d3Selection && store.d3Zoom?.scaleTo(transition(store.d3Selection, options?.duration), zoomLevel),
+  setTransform: (transform, options) => {
+    const nextTransform = zoomIdentity.translate(transform.x, transform.y).scale(transform.zoom)
+    store.d3Selection && store.d3Zoom?.transform(transition(store.d3Selection, options?.duration), nextTransform)
+  },
+  getTransform: () => ({
+    x: store.transform[0],
+    y: store.transform[1],
+    zoom: store.transform[2],
+  }),
+  fitView: (
+    options = {
+      padding: DEFAULT_PADDING,
+      includeHiddenNodes: false,
+      duration: 0,
     },
-    setCenter: (x: number, y: number, zoom?: number) => {
-      const nextZoom = typeof zoom !== 'undefined' ? zoom : store.maxZoom
-      const centerX = store.dimensions.width / 2 - x * nextZoom
-      const centerY = store.dimensions.height / 2 - y * nextZoom
-      const transform = zoomIdentity.translate(centerX, centerY).scale(nextZoom)
+  ) => {
+    if (!store.getNodes.length) return
 
-      store.d3Selection && store.d3Zoom?.transform(store.d3Selection, transform)
-    },
-    fitBounds: (bounds: Rect, padding = DEFAULT_PADDING) => {
-      const [x, y, zoom] = getTransformForBounds(
-        bounds,
-        store.dimensions.width,
-        store.dimensions.height,
-        store.minZoom,
-        store.maxZoom,
-        padding,
-      )
-      const transform = zoomIdentity.translate(x, y).scale(zoom)
+    let nodes: GraphNode[] = []
+    if (options.nodes) {
+      nodes = store.nodes.filter((n) => options.nodes?.includes(n.id))
+    }
+    if (!nodes || !nodes.length) {
+      nodes = options.includeHiddenNodes ? store.nodes : store.getNodes
+    }
+    const bounds = getRectOfNodes(nodes)
+    const [x, y, zoom] = getTransformForBounds(
+      bounds,
+      store.dimensions.width,
+      store.dimensions.height,
+      options.minZoom ?? store.minZoom,
+      options.maxZoom ?? store.maxZoom,
+      options.padding ?? DEFAULT_PADDING,
+      options.offset,
+    )
+    const transform = zoomIdentity.translate(x, y).scale(zoom)
 
-      store.d3Selection && store.d3Zoom?.transform(store.d3Selection, transform)
-    },
-    project: (position: XYPosition) => pointToRendererPoint(position, store.transform, store.snapToGrid, store.snapGrid),
-  }
-}
+    store.d3Selection && store.d3Zoom?.transform(transition(store.d3Selection, options?.duration), transform)
+  },
+  setCenter: (x, y, options) => {
+    const nextZoom = typeof options?.zoom !== 'undefined' ? options.zoom : store.maxZoom
+    const centerX = store.dimensions.width / 2 - x * nextZoom
+    const centerY = store.dimensions.height / 2 - y * nextZoom
+    const transform = zoomIdentity.translate(centerX, centerY).scale(nextZoom)
+
+    store.d3Selection && store.d3Zoom?.transform(transition(store.d3Selection, options?.duration), transform)
+  },
+  fitBounds: (bounds, options = { padding: DEFAULT_PADDING }) => {
+    const [x, y, zoom] = getTransformForBounds(
+      bounds,
+      store.dimensions.width,
+      store.dimensions.height,
+      store.minZoom,
+      store.maxZoom,
+      options.padding,
+    )
+    const transform = zoomIdentity.translate(x, y).scale(zoom)
+
+    store.d3Selection && store.d3Zoom?.transform(transition(store.d3Selection, options.duration), transform)
+  },
+  project: (position) => pointToRendererPoint(position, store.transform, store.snapToGrid, store.snapGrid),
+})
diff --git a/src/types/flow.ts b/src/types/flow.ts
index dfb6c399..5a7348ca 100644
--- a/src/types/flow.ts
+++ b/src/types/flow.ts
@@ -2,11 +2,11 @@ import { CSSProperties } from 'vue'
 import { GraphEdge, Edge } from './edge'
 import { GraphNode, CoordinateExtent, Node } from './node'
 import { ConnectionLineType, ConnectionMode } from './connection'
-import { KeyCode, PanOnScrollMode } from './zoom'
+import { KeyCode, PanOnScrollMode, UseZoomPanHelper } from './zoom'
 import { EdgeTypes, NodeTypes } from './components'
 
-export type FlowElement<DataNode = any, DataEdge = any> = GraphNode<DataNode> | GraphEdge<DataEdge>
-export type FlowElements<DataNode = any, DataEdge = any> = FlowElement<DataNode, DataEdge>[]
+export type FlowElement<N = any, E = any> = GraphNode<N> | GraphEdge<E>
+export type FlowElements<N = any, E = any> = FlowElement<N, E>[]
 export interface Element<Data = any> {
   id: string
   label?: string
@@ -16,12 +16,7 @@ export interface Element<Data = any> {
   style?: CSSProperties
   hidden?: boolean
 }
-export type Elements<DataNode = any, DataEdge = any> = (Node<DataNode> | Edge<DataEdge>)[]
-
-export type NextElements = {
-  nodes: GraphNode[]
-  edges: GraphEdge[]
-}
+export type Elements<N = any, E = any> = (Node<N> | Edge<E>)[]
 
 export type Transform = [number, number, number]
 
@@ -64,53 +59,26 @@ export interface SelectionRect extends Rect {
   draw: boolean
 }
 
-export type FitViewParams = {
-  padding?: number
-  includeHiddenNodes?: boolean
-  minZoom?: number
-  maxZoom?: number
-  offset?: {
-    x?: number
-    y?: number
-  }
-  transitionDuration?: number
-  nodes?: string[]
-}
-
-export type FlowExportObject<DataNode = any, DataEdge = DataNode> = {
-  nodes: GraphNode<DataNode>[]
-  edges: GraphEdge<DataEdge>[]
+export type FlowExportObject<N = any, E = N> = {
+  nodes: GraphNode<N>[]
+  edges: GraphEdge<E>[]
   position: [number, number]
   zoom: number
 }
 
-export type FlowTransform = {
-  x: number
-  y: number
-  zoom: number
-}
+export type ToObject<N = any, E = N> = () => FlowExportObject<N, E>
 
-export type FitViewFunc = (fitViewOptions?: FitViewParams) => void
-export type ProjectFunc = (position: XYPosition) => XYPosition
-export type ToObjectFunc<DataNode = any, DataEdge = DataNode> = () => FlowExportObject<DataNode, DataEdge>
+export type FlowInstance<N = any, E = N> = {
+  getElements: () => FlowElements<N, E>
+  getNodes: () => GraphNode<N>[]
+  getEdges: () => GraphEdge<E>[]
+  toObject: ToObject<N, E>
+} & UseZoomPanHelper
 
-export type FlowInstance<DataNode = any, DataEdge = DataNode> = {
-  zoomIn: () => void
-  zoomOut: () => void
-  zoomTo: (zoomLevel: number) => void
-  fitView: FitViewFunc
-  project: ProjectFunc
-  getElements: () => FlowElements
-  getNodes: () => GraphNode[]
-  getEdges: () => GraphEdge[]
-  setTransform: (transform: FlowTransform) => void
-  toObject: ToObjectFunc<DataNode, DataEdge>
-}
-
-export interface FlowProps<DataNode = any, DataEdge = DataNode> {
+export interface FlowProps<N = any, E = N> {
   modelValue?: any[]
-  nodes?: Node<DataNode>[]
-  edges?: Edge<DataEdge>[]
+  nodes?: Node<N>[]
+  edges?: Edge<E>[]
   elements?: Elements
   id?: string
   nodeTypes?: NodeTypes
diff --git a/src/types/zoom.ts b/src/types/zoom.ts
index d9026c33..f579dc68 100644
--- a/src/types/zoom.ts
+++ b/src/types/zoom.ts
@@ -1,5 +1,5 @@
 import { Selection, ZoomBehavior } from 'd3'
-import { FitViewFunc, FlowTransform, Rect, XYPosition } from './flow'
+import { Rect, XYPosition } from './flow'
 
 export type D3Zoom = ZoomBehavior<HTMLDivElement, unknown>
 export type D3Selection = Selection<HTMLDivElement, unknown, any, any>
@@ -13,13 +13,53 @@ export enum PanOnScrollMode {
   Horizontal = 'horizontal',
 }
 
+export type UseZoomPanHelperOptions = {
+  duration?: number
+}
+
+export type FitViewParams = {
+  padding?: number
+  includeHiddenNodes?: boolean
+  minZoom?: number
+  maxZoom?: number
+  offset?: {
+    x?: number
+    y?: number
+  }
+  nodes?: string[]
+} & UseZoomPanHelperOptions
+
+export type FlowTransform = {
+  x: number
+  y: number
+  zoom: number
+}
+
+export type SetCenterOptions = UseZoomPanHelperOptions & {
+  zoom?: number
+}
+
+export type FitBoundsOptions = UseZoomPanHelperOptions & {
+  padding?: number
+}
+
+export type FitView = (fitViewOptions?: FitViewParams) => void
+export type Project = (position: XYPosition) => XYPosition
+export type SetCenter = (x: number, y: number, options?: SetCenterOptions) => void
+export type FitBounds = (bounds: Rect, options?: FitBoundsOptions) => void
+export type ZoomInOut = (options?: UseZoomPanHelperOptions) => void
+export type ZoomTo = (zoomLevel: number, options?: UseZoomPanHelperOptions) => void
+export type GetTransform = () => FlowTransform
+export type SetTransform = (transform: FlowTransform, options?: UseZoomPanHelperOptions) => void
+
 export interface UseZoomPanHelper {
-  zoomIn: () => void
-  zoomOut: () => void
-  zoomTo: (zoomLevel: number) => void
-  transform: (transform: FlowTransform) => void
-  fitView: FitViewFunc
-  setCenter: (x: number, y: number, zoom?: number) => void
-  fitBounds: (bounds: Rect, padding?: number) => void
-  project: (position: XYPosition) => XYPosition
+  zoomIn: ZoomInOut
+  zoomOut: ZoomInOut
+  zoomTo: ZoomTo
+  setTransform: SetTransform
+  getTransform: GetTransform
+  fitView: FitView
+  setCenter: SetCenter
+  fitBounds: FitBounds
+  project: Project
 }