对Heroku的Create-React-App部署失败，出现“react-scripts：not found” [英] Create-React-App deployment to Heroku failed with ` react-scripts: not found`

问题描述

我们正在使用Create-React-App开发ReactJS应用程序，该应用程序由我们也提供API的Node / Express服务器提供。我们使用node / JS buildpack将整个服务器部署到Heroku，并试图在 postinstall npm run build >脚本从@mars package.json 文件问题/ 32rel =nofollow noreferrer>在本期中。

问题在于Heroku部署失败并出现此错误。请注意，这个错误在我的某个地方发生在本地，但然后来自web_app的 npm install 正在解决此问题，但在Heroku中运行时不会。我有两个相关的问题：

1. 如何在Heroku中部署一个同时提供API和Create-React-App应用程序的Node / Express应用程序？我可以提交我的构建目录，但这真的不是正确的方式。


2. 为什么react-scripts正在消失，我必须多次运行 npm install 。

解决方案

@johnnycon -

这正是问题所在，我已在火星的 github发布帖子：

< blockquote>

@philjoseph，react-scripts是（默认情况下）CRA应用程序的devDependency，但是Heroku Node buildpack具有环境NODE_ENV = production，这会导致npm install跳过devDeps。

要安装这些devDeps：

npm install --only = dev&& npm install&& npm run build

他还指出了这个优秀的回购： https://github.com/mars/heroku-cra-node

我跟着这个，它像魅力一样工作：）

We're developing a ReactJS application using Create-React-App, that is served from our Node/Express server that also serves API's. We deploy the whole server to Heroku using node/JS buildpack and trying to get the CRA build step npm run build in postinstall script from the node package.json file as suggested by @mars in this issue.

The issue is that Heroku deployment is failing with this error. Note that this error happen to me sometime locally but then a npm install from the web_app is solving the issue, but not when run in Heroku. I have two related questions:

1. How to deploy to Heroku a Node/Express app that serves both APIs and a Create-React-App application? I can commit my build directory but this is really not the right way.
2. Why the react-scripts are disappearing and I have to run multiple times the npm install.

解决方案

@johnnycon -

This was exactly the issue and I've received the answer from Mars in this github issue post:

@philjoseph, react-scripts is (by default) a devDependency for CRA apps, but Heroku Node buildpack has environment NODE_ENV=production which causes npm install to skip devDeps.

To install those devDeps too:

npm install --only=dev && npm install && npm run build

He also pointed to this excellent repo: https://github.com/mars/heroku-cra-node

I followed this and it works like a charm :)

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