无法在es6中导入THREE.js

Question

我正在尝试使用create react应用程序在div中显示three.js场景。 但是，它抛出未定义的三个。

试过了

1. npm install-保存三个
2. 从“三个”导入*作为三个

但似乎不起作用，它总是抛出三个未定义的un-undef。 也请看看我的仓库。 https://github.com/priyakrishnadev/webglapp

更新：

{
  "name": "my-app",
  "version": "0.1.0",
  "private": true,
  "dependencies": {
    "autoprefixer": "7.1.6",
    "axios": "^0.16.2",
    "babel-core": "6.26.0",
    "babel-eslint": "7.2.3",
    "babel-jest": "20.0.3",
    "babel-loader": "7.1.2",
    "babel-polyfill": "^6.26.0",
    "babel-preset-react-app": "^3.1.0",
    "babel-runtime": "6.26.0",
    "case-sensitive-paths-webpack-plugin": "2.1.1",
    "chalk": "1.1.3",
    "classnames": "^2.2.5",
    "css-loader": "0.28.7",
    "dotenv": "4.0.0",
    "eslint": "4.10.0",
    "eslint-config-react-app": "^2.0.1",
    "eslint-loader": "1.9.0",
    "eslint-plugin-flowtype": "2.39.1",
    "eslint-plugin-import": "2.8.0",
    "eslint-plugin-jsx-a11y": "5.1.1",
    "eslint-plugin-react": "7.4.0",
    "extract-text-webpack-plugin": "3.0.2",
    "file-loader": "1.1.5",
    "fs-extra": "3.0.1",
    "html-webpack-plugin": "2.29.0",
    "jest": "20.0.4",
    "lodash": "^4.17.4",
    "object-assign": "4.1.1",
    "postcss-flexbugs-fixes": "3.2.0",
    "postcss-loader": "2.0.8",
    "promise": "8.0.1",
    "prop-types": "^15.6.0",
    "raf": "3.4.0",
    "react": "^16.1.0",
    "react-dev-utils": "^4.2.1",
    "react-dom": "^16.1.0",
    "react-redux": "^5.0.6",
    "react-router-dom": "^4.2.2",
    "react-timeago": "3.4.3",
    "redux": "^3.7.2",
    "redux-devtools-extension": "^2.13.2",
    "redux-form": "^7.0.4",
    "redux-logger": "^3.0.6",
    "redux-thunk": "^2.2.0",
    "style-loader": "0.19.0",
    "sw-precache-webpack-plugin": "0.11.4",
    "three": "^0.88.0",
    "timeago-react": "^2.0.0",
    "url-loader": "0.6.2",
    "uuid": "^3.1.0",
    "webpack": "3.8.1",
    "webpack-dev-server": "2.9.4",
    "webpack-manifest-plugin": "1.3.2",
    "whatwg-fetch": "2.0.3"
  },
  "scripts": {
    "start": "node scripts/start.js",
    "build": "node scripts/build.js",
    "test": "node scripts/test.js --env=jsdom"
  },
  "jest": {
    "collectCoverageFrom": [
      "src/**/*.{js,jsx,mjs}"
    ],
    "setupFiles": [
      "<rootDir>/config/polyfills.js"
    ],
    "testMatch": [
      "<rootDir>/src/**/__tests__/**/*.{js,jsx,mjs}",
      "<rootDir>/src/**/?(*.)(spec|test).{js,jsx,mjs}"
    ],
    "testEnvironment": "node",
    "testURL": "http://localhost",
    "transform": {
      "^.+\\.(js|jsx|mjs)$": "<rootDir>/node_modules/babel-jest",
      "^.+\\.css$": "<rootDir>/config/jest/cssTransform.js",
      "^(?!.*\\.(js|jsx|mjs|css|json)$)": "<rootDir>/config/jest/fileTransform.js"
    },
    "transformIgnorePatterns": [
      "[/\\\\]node_modules[/\\\\].+\\.(js|jsx|mjs)$"
    ],
    "moduleNameMapper": {
      "^react-native$": "react-native-web"
    },
    "moduleFileExtensions": [
      "web.js",
      "mjs",
      "js",
      "json",
      "web.jsx",
      "jsx",
      "node"
    ]
  },
  "babel": {
    "presets": [
      "react-app"
    ]
  },
  "eslintConfig": {
    "extends": "react-app"
  }
}

Answer 1

问题是您要导入三个作为es6模块，但随后尝试包括不在三个中且未设置为模块的DDSLoader，MTLLoader和OBJLoader（因为它们在/ exmaples / js /文件夹中为三个）。 js）。

您需要使用设置为模块的版本。 例如， 三个obj-loader 。
其中有一些，有些设置与其他设置不同，有些甚至是专门为与react一起使用而设置的，因此您将必须研究如何实现所选的实现。 在npm网站上搜索它们。

使用三对象加载器的示例可以看作是此堆栈问题的答案 。