NPM错误无法找到礼物＆＃34; es2015＆＃34; - babel / node / react

Question

部署到Heroku时，我收到以下NPM错误。我的项目是mern stack。

错误：无法找到预设＆＃34; es2015＆＃34;相对于目录＆＃34; / app＆＃34;

软件包似乎安装正确，我正确设置了.babelrc文件，除了父目录不同之外，与远程软件相比，本地没有任何区别。在Heroku上，父目录显然是＆＃34; app＆＃34;。这些是我的NPM包：

  "dependencies": {
    "babel-core": "^6.7.2",
    "babel-polyfill": "^6.7.4",
    "body-parser": "~1.12.0",
    "cookie-parser": "~1.3.4",
    "css-modules-require-hook": "^4.0.0",
    "debug": "~2.1.1",
    "express": "~4.12.2",
    "react": "^0.14.7",
    "react-dom": "^0.14.7",
    "react-redux": "^4.4.1",
    "react-router": "^2.0.1",
    "redux": "^3.3.1",
    "serve-favicon": "~2.2.0",
    "webpack": "^1.12.13"
  },
  "devDependencies": {
    "babel-eslint": "^5.0.0",
    "babel-loader": "^6.2.4",
    "babel-plugin-react-transform": "^2.0.2",
    "babel-polyfill": "^6.7.4",
    "babel-preset-es2015": "^6.6.0",
    "babel-preset-react": "^6.5.0",
    "babel-preset-react-hmre": "^1.1.1",
    "babel-register": "^6.7.2",
    "css-modules-require-hook": "^4.0.0",
    "redux-devtools": "^3.1.1",
    "redux-devtools-dock-monitor": "^1.1.0",
    "redux-devtools-log-monitor": "^1.0.4",
    "webpack-dev-middleware": "^1.5.1",
    "webpack-hot-middleware": "^2.10.0"
  }

此外，npm start运行 index.js ，其中包含以下内容：

require('babel-core/register');
require('babel-polyfill');
require('css-modules-require-hook');
require('./server/index');

我实际上遇到的错误是找不到babel-polyfill和css-modules-require-hook或其他东西（我不记得不幸）但是当我从devDependencies添加它们到我的依赖项时，它似乎解决自己。要确定实际放置哪些包（任何提示？）相当困难。我非常欣赏一些方向！

Answer 1

据我所知，heroku默认添加--production标志，这不会安装你的devdependencies。我移动所有必要的依赖项来创建devDep依赖项的构建。 或

heroku config:set NPM_CONFIG_PRODUCTION=false