three.js/examples/jsm/loaders/AssimpLoader.d.ts

import {
  Object3D,
  Loader,
  LoadingManager
} from '../../../src/Three';


export interface Assimp {
  animation: any;
  object: Object3D;
}

export class AssimpLoader extends Loader {
  constructor(manager?: LoadingManager);

  load(url: string, onLoad: (result: Assimp) => void, onProgress?: (event: ProgressEvent) => void, onError?: (event: ErrorEvent) => void) : void;
  parse(buffer: ArrayBuffer, path: string) : Assimp;
}