[Bug]: --env-mode can‘t change the process.env.NODE_ENV environment variable.

[Fitz6]

Version

Browsers:
  Chrome: 126.0.6478.127
  Edge: Chromium (126.0.2592.87)
npmPackages:
  @rsbuild/core: 1.0.0-alpha.9 => 1.0.0-alpha.9

Details

Suppose there is a .env.development file in the project with the following content:

NODE_ENV=development

When you run:

rsbuild build --env-mode development

process.env.NODE_ENV will be set to production instead of development.

However, when using webpack or Vite, process.env.NODE_ENV is correctly set.

For example:
With the same .env.development file, run:

# vite
vite build --mode development

# webpack without dotenv
webpack --mode=development

In these cases, process.env.NODE_ENV is always correctly set to development.

Reproduce link

unnecessary

Reproduce Steps

1. execute rsbuild build --env-mode development
2. find the environment variable