错误加载> module.exports = require（“ Nextjs中的三个/ examples / jsm / loaders / GLTFLoader”）

Question

我正在使用react-three-fiber，three和nextjs显示一些鸟，这是threejs中的常见示例！这是我的nextjs应用的索引文件：

import React, { useRef, useState, useEffect } from 'react';
import * as THREE from 'three';
import { Canvas, useFrame, useLoader } from 'react-three-fiber';
import { GLTFLoader } from 'three/examples/jsm/loaders/GLTFLoader';

function Box(props) {
  // This reference will give us direct access to the mesh
  const mesh = useRef();

  // Set up state for the hovered and active state
  const [hovered, setHover] = useState(false);
  const [active, setActive] = useState(false);

  // Rotate mesh every frame, this is outside of React without overhead
  // eslint-disable-next-line no-return-assign,no-multi-assign
  useFrame(() => (mesh.current.rotation.x = mesh.current.rotation.y += 0.01));

  return (
    <mesh
      {...props}
      ref={mesh}
      scale={active ? [1.5, 1.5, 1.5] : [1, 1, 1]}
      onClick={e => setActive(!active)}
      onPointerOver={e => setHover(true)}
      onPointerOut={e => setHover(false)}
    >
      <boxBufferGeometry attach="geometry" args={[1, 1, 1]} />
      <meshStandardMaterial
        attach="material"
        color={hovered ? 'hotpink' : 'orange'}
      />
    </mesh>
  );
}

// This component was auto-generated from GLTF by: https://github.com/react-spring/gltfjsx
function Bird({ speed, factor, url, ...props }) {
  const gltf = useLoader(GLTFLoader, url);
  const group = useRef();
  const [mixer] = useState(() => new THREE.AnimationMixer());
  useEffect(
    () => void mixer.clipAction(gltf.animations[0], group.current).play(),
    [gltf.animations, mixer],
  );
  useFrame((state, delta) => {
    group.current.rotation.y +=
      Math.sin((delta * factor) / 2) * Math.cos((delta * factor) / 2) * 1.5;
    mixer.update(delta * speed);
  });
  return (
    <group ref={group}>
      <scene name="Scene" {...props}>
        <mesh
          name="Object_0"
          morphTargetDictionary={gltf.__$[1].morphTargetDictionary}
          morphTargetInfluences={gltf.__$[1].morphTargetInfluences}
          rotation={[1.5707964611537577, 0, 0]}
        >
          <bufferGeometry attach="geometry" {...gltf.__$[1].geometry} />
          <meshStandardMaterial
            attach="material"
            {...gltf.__$[1].material}
            name="Material_0_COLOR_0"
          />
        </mesh>
      </scene>
    </group>
  );
}

function Birds() {
  return new Array(2).fill().map((_, i) => {
    const x = (15 + Math.random() * 30) * (Math.round(Math.random()) ? -1 : 1);
    const y = -10 + Math.random() * 20;
    const z = -5 + Math.random() * 10;
    const bird = ['stork', 'parrot', 'flamingo'][Math.round(Math.random() * 2)];
    const speed = bird === 'stork' ? 0.5 : bird === 'flamingo' ? 2 : 5;
    const factor =
      bird === 'stork'
        ? 0.5 + Math.random()
        : bird === 'flamingo'
        ? 0.25 + Math.random()
        : 1 + Math.random() - 0.5;
    return (
      <Bird
        key={i}
        position={[x, y, z]}
        rotation={[0, x > 0 ? Math.PI : 0, 0]}
        speed={speed}
        factor={factor}
        url={`/static/glb/${bird}.glb`}
      />
    );
  });
}

const MyComponent = props => {
  return (
    <Canvas>
      <ambientLight />
      <pointLight position={[10, 0, 10]} />
      <Box position={[-1.2, 2, 0]} />
      <Box position={[1.2, 0, 0]} />
      <Box position={[3, -2, 0]} />
      <Birds />
    </Canvas>
  );
};

export default MyComponent;

我的文件在static/glb/...文件夹中！问题出在GLTFLoader加载器上。我尝试"react-three-fiber"的extend方法，但没有帮助！

我想也许是因为SSR。您是否这样认为？