https://github.com/WWBN/AVideo/issues/8713

node_modules/three/examples/jsm/modifiers/EdgeSplitModifier.d.ts

@@ -0,0 +1,22 @@
+import { BufferGeometry, Geometry } from '../../../src/Three';
+
+export class EdgeSplitModifier {
+
+	constructor();
+
+
+	/**
+	 * @param geometry					The geometry to modify by splitting edges.
+	 * 									This geometry can be any of any type: Geometry or BufferGeometry, indexed or
+	 * 									not...
+	 *
+	 * @param cutOffPoint				The cutoff angle in radians. If the angle between two face normals is higher
+	 * 									than this value, a split will be made.
+	 *
+	 * @param [tryKeepNormals = true]	Set to true to keep the normal values for vertices that won't be split.
+	 * 									To use this feature, you also need to pass an indexed geometry with a 'normal'
+	 * 									BufferAttribute.
+	 */
+	modify( geometry: Geometry, cutOffPoint: number, tryKeepNormals: boolean ): BufferGeometry;
+
+}