如何在 package.json 脚本中将 Git 标记设置为 ENV 变量

Question

Im trying to set the Git Tag as a Node ENV variable for my app so I can use it and display it on my React UI. For this I defined the following script:

"scripts": {
    "dev": "NODE_ENV=development VERSION=\"$(git describe --tag)\" concurrently \"npm run server\" \"npm run client\""
}

I also tried it like this:

"dev": "NODE_ENV=development VERSION=$(git describe --tag) concurrently \"npm run server\" \"npm run client\""

But the VERSION variable stayed empty.

Any advice what I need to change?

Answer 1

To use a defined env variable in React you have to name it REACT_APP_VARIABLENAME . Except for NODE_ENV .

And access it via process.env.REACT_APP_VARIABLENAME

This worked for me.