[Maps] fix IVectorLayer.getStyle typing (#75829)

* [Maps] fix IVectorLayer.getStyle typing

* update typing in VectorLayer type definition

* fix unit tests

* review feedback

Author: nreese

x-pack/plugins/maps/public/classes/layers/vector_layer/vector_layer.d.ts

@@ -32,7 +32,6 @@ export interface IVectorLayer extends ILayer {
   getJoins(): IJoin[];
   getValidJoins(): IJoin[];
   getSource(): IVectorSource;
-  getStyle(): IVectorStyle;
   getFeatureById(id: string | number): Feature | null;
   getPropertiesForTooltip(properties: GeoJsonProperties): Promise<ITooltipProperty[]>;
   hasJoins(): boolean;
@@ -79,7 +78,6 @@ export class VectorLayer extends AbstractLayer implements IVectorLayer {
   _setMbPointsProperties(mbMap: unknown, mvtSourceLayer?: string): void;
   _setMbLinePolygonProperties(mbMap: unknown, mvtSourceLayer?: string): void;
   getSource(): IVectorSource;
-  getStyle(): IVectorStyle;
   getFeatureById(id: string | number): Feature | null;
   getPropertiesForTooltip(properties: GeoJsonProperties): Promise<ITooltipProperty[]>;
   hasJoins(): boolean;

x-pack/plugins/maps/public/classes/styles/vector/properties/__tests__/test_util.ts

@@ -5,7 +5,7 @@
  */
 
 // eslint-disable-next-line max-classes-per-file
-import { FIELD_ORIGIN } from '../../../../../../common/constants';
+import { FIELD_ORIGIN, LAYER_STYLE_TYPE } from '../../../../../../common/constants';
 import { StyleMeta } from '../../style_meta';
 import {
   CategoryFieldMeta,
@@ -44,7 +44,7 @@ export class MockStyle implements IStyle {
   }
 
   getType() {
-    return 'mockStyle';
+    return LAYER_STYLE_TYPE.VECTOR;
   }
 
   getStyleMeta(): StyleMeta {

x-pack/plugins/maps/public/classes/styles/vector/properties/dynamic_style_property.tsx

@@ -27,6 +27,7 @@ import {
 import { IField } from '../../../fields/field';
 import { IVectorLayer } from '../../../layers/vector_layer/vector_layer';
 import { IJoin } from '../../../joins/join';
+import { IVectorStyle } from '../vector_style';
 
 export interface IDynamicStyleProperty<T> extends IStyleProperty<T> {
   getFieldMetaOptions(): FieldMetaOptions;
@@ -88,7 +89,7 @@ export class DynamicStyleProperty<T> extends AbstractStyleProperty<T>
   }
 
   getRangeFieldMeta() {
-    const style = this._layer.getStyle();
+    const style = this._layer.getStyle() as IVectorStyle;
     const styleMeta = style.getStyleMeta();
     const fieldName = this.getFieldName();
     const rangeFieldMetaFromLocalFeatures = styleMeta.getRangeFieldMetaDescriptor(fieldName);
@@ -113,7 +114,7 @@ export class DynamicStyleProperty<T> extends AbstractStyleProperty<T>
   }
 
   getCategoryFieldMeta() {
-    const style = this._layer.getStyle();
+    const style = this._layer.getStyle() as IVectorStyle;
     const styleMeta = style.getStyleMeta();
     const fieldName = this.getFieldName();
     const categoryFieldMetaFromLocalFeatures = styleMeta.getCategoryFieldMetaDescriptor(fieldName);