cross-env role

What is

Run cross-platform settings and environment variables using a script

The reason

When you use NODE_ENV = production, to set environment variables, most of the Windows command prompt will block (error). (Exceptions are Bash on Windows, it uses the machine Bash.) Similarly, Windows and POSIX command how to use the environment variables are different. Use POSIX, you can use: $ ENV_VAR% ENV_VAR% and the use of Windows.
windows does not support NODE_ENV = set way of development.

solve

cross-env enables you to use a single command, without having to worry about setting environment variables or by using the correct platform. Just run on POSIX systems can be set up, while cross-env will set it up correctly.

Talking: This mini-package (cross-env) provides a set environment variables scripts, so you can set the environment variable to unix way, and is also compatible to run on windows.

installation

    npm install --save-dev cross-env

use

    {"scripts":{"build":"cross-env NODE_ENV=production webpack --config build/webpack.config.js"}}

NODE_ENV environment variables set by the cross-env

打印process.env.NODE_ENV === 'production '