three.js/examples/jsm/controls/FlyControls.d.ts

import {
  Camera
} from '../../../src/Three';

export class FlyControls {
  constructor(object: Camera, domElement?: HTMLElement);

  object: Camera;
  domElement: HTMLElement | HTMLDocument;

  movementSpeed: number;
  rollSpeed: number;
  dragToLook: boolean;
  autoForward: boolean;

  update(delta: number): void;
  dispose(): void;

}