Heroku package.json问题

Question

Package.json：

    {
        "private": true,
        "scripts": {
                    ...
        },
        "devDependencies": {
            "axios": "^0.18",
            "babel-preset-react": "^6.23.0",
            "bootstrap": "^4.0.0",
            "cross-env": "^5.1",
            "jquery": "^3.2",
            "laravel-mix": "^2.0",
            "lodash": "^4.17.4",
            "popper.js": "^1.12",
            "react": "^16.2.0",
            "react-dom": "^16.2.0",
            "gh-pages": "^2.0.1",
            "react-icons": "^3.2.2",
            "react-redux": "^5.0.7",
            "react-scripts": "1.1.5",
            "redux": "^4.0.0",
            "redux-thunk": "^2.3.0",
            "styled-components": "^4.0.2"
        },
        "dependencies": {
            "react-router-dom": "^4.3.1"
        }
    }

在部署了laravel应用程序(与react)后，我出现了错误：

Uncaught Error: Cannot find module "react-redux"

我有一个空白的站点，上面的错误在控制台中。

Answer 1

在默认情况下，Heroku只在部署上安装产品依赖项，因此通过运行dependencies package.json列出了在您的npm install --production键下列出的产品依赖项。

将对运行应用程序至关重要的依赖项从devDependencies移动到dependencies，这将解决您的问题。

devDependencies用于支持您的开发，但您的应用程序的生产副本不需要运行，例如测试模块。