你能覆盖 create-react-app@3.x 中的 NODE_ENV env 变量吗？
Can you override the NODE_ENV env variable in create-react-app@3.x?
我想在开发节点 (yarn run start) 中构建我的 React 应用程序时手动更改 NODE_ENV 环境变量的值。
不，至少根据 create-react-app@3.4.1，这是不可能的。摘自docs：
There is also a built-in environment variable called NODE_ENV. You can read it from process.env.NODE_ENV. When you run npm start, it is always equal to 'development', when you run npm test it is always equal to 'test', and when you run npm run build to make a production bundle, it is always equal to 'production'. You cannot override NODE_ENV manually. This prevents developers from accidentally deploying a slow development build to production.
我想在开发节点 (yarn run start) 中构建我的 React 应用程序时手动更改 NODE_ENV 环境变量的值。
不，至少根据 create-react-app@3.4.1，这是不可能的。摘自docs：
There is also a built-in environment variable called
NODE_ENV. You can read it fromprocess.env.NODE_ENV. When you runnpm start, it is always equal to 'development', when you runnpm testit is always equal to 'test', and when you runnpm run buildto make a production bundle, it is always equal to 'production'. You cannot override NODE_ENV manually. This prevents developers from accidentally deploying a slow development build to production.