Use any to keep the support for OL < 10.

package.json

@@ -44,7 +44,7 @@
     "eslint-config-prettier": "9.1.0",
     "eslint-plugin-prettier": "5.2.1",
     "gh-pages": "6.1.1",
-    "ol": "^10.0.0",
+    "ol": "^9.0.0",
     "prettier": "^3.3.3",
     "typedoc": "0.26.5",
     "typescript": "5.5.4"

src/MFPEncoder.ts

@@ -23,9 +23,6 @@ import VectorEncoder from './VectorEncoder';
 import {toContext} from 'ol/render.js';
 import LayerGroup from 'ol/layer/Group';
 import VectorContext from 'ol/render/VectorContext';
-import type {Feature} from 'ol';
-import VectorSource from 'ol/source/Vector';
-import { VectorTile } from 'ol/source';
 
 export interface EncodeMapOptions {
   map: Map;
@@ -309,7 +306,8 @@ export default class MFPBaseEncoder {
     printResolution: number,
     customizer: BaseCustomizer,
   ): Promise<MFPLayer[] | MFPLayer | null> {
-    const layer = layerState.layer as VectorTileLayer<VectorTile<Feature>>;
+    // VectorTile<Feature> for OL 10.0.0, any to support OL < 10
+    const layer = layerState.layer as VectorTileLayer<any>;
     const {MVTEncoder} = await import('@geoblocks/print');
     const encoder = new MVTEncoder();
     const printExtent = customizer.getPrintExtent();
@@ -353,7 +351,8 @@ export default class MFPBaseEncoder {
     customizer: BaseCustomizer,
     additionalDraw: (cir: VectorContext, geometry: Geometry) => void,
   ): Promise<MFPImageLayer> {
-    const layer = layerState.layer as VectorLayer<VectorSource<Feature>>;
+    // VectorSource<Feature> for OL 10.0.0, any to support OL < 10
+    const layer = layerState.layer as VectorLayer<any>;
     const printExtent = customizer.getPrintExtent();
     const width = getExtentWidth(printExtent) / resolution;
     const height = getExtentHeight(printExtent) / resolution;

src/VectorEncoder.ts

@@ -27,6 +27,7 @@ import {Constants} from './constants';
 
 import {getFontParameters} from 'ol/css.js';
 import {type ColorLike} from 'ol/colorlike';
+import { Geometry } from 'ol/geom';
 
 /** Represents the different types of printing styles. */
 export const PrintStyleType = {
@@ -85,15 +86,17 @@ const styleKey = (styles: string | string[]): string => {
  */
 export default class VectorEncoder {
   private layerState_: State;
-  private layer_: VectorLayer<VectorSource<Feature>>;
+  // VectorSource<Feature> for OL 10.0.0, any to support OL < 10
+  private layer_: VectorLayer<any>;
   private customizer_: BaseCustomizer;
   private geojsonFormat = new olFormatGeoJSON();
   private deepIds_: Map<string, number> = new Map();
   private lastDeepId_ = 0;
 
   constructor(layerState: State, customizer: BaseCustomizer) {
     this.layerState_ = layerState;
-    this.layer_ = this.layerState_.layer as VectorLayer<VectorSource<Feature>>;
+    // VectorSource<Feature> for OL 10.0.0, any to support OL < 10
+    this.layer_ = this.layerState_.layer as VectorLayer<any>;
     this.customizer_ = customizer;
   }
 
@@ -115,7 +118,7 @@ export default class VectorEncoder {
       version: 2,
     };
 
-    features.forEach((feature) =>
+    features.forEach((feature: Feature<Geometry>) =>
       this.encodeFeature(feature, resolution, geojsonFeatures, mapfishStyleObject),
     );