three.js/examples/jsm/misc/ConvexObjectBreaker.d.ts

import {
  Object3D,
  Plane,
  Vector3
} from '../../../src/Three';

export interface CutByPlaneOutput {
  object1: Object3D;
  object2: Object3D;
}

export class ConvexObjectBreaker {
  constructor(minSizeForBreak?: number, smallDelta?: number);
  prepareBreakableObject(object: Object3D, mass: number, velocity: Vector3, angularVelocity: Vector3, breakable: boolean): void;
  subdivideByImpact(object: Object3D, pointOfImpact: Vector3, normal: Vector3, maxRadialIterations: number, maxRandomIterations: number): Object3D[];
  cutByPlane(object: Object3D, plane: Plane, output: CutByPlaneOutput): number;
}