react-scripts@5 BROWSER in .env file is not working

Created by: stacy-rendall

Describe the bug

With react-scripts@5 BROWSER is not working when placed in an .env file (I'm using .env.local in this case)

i.e. BROWSER=msedge used to work with react-scripts@4, with v5 this is ignored and the default browser opens

Did you try recovering your dependencies?

Node version: 16.13.2 NPM version: 8.3.1

Which terms did you search for in User Guide?

Following guide here: https://create-react-app.dev/docs/advanced-configuration/

Environment

Environment Info:

current version of create-react-app: 5.0.0 running from C:\Users[username]\scoop\persist\nodejs-lts\cache_npx\c67e74de0542c87c\node_modules\create-react-app

System: OS: Windows 10 10.0.19044 CPU: (12) x64 Intel(R) Xeon(R) E-2176M CPU @ 2.70GHz Binaries: Node: 16.13.2 - ~\scoop\apps\nodejs-lts\current\node.EXE Yarn: Not Found npm: 8.3.1 - ~\scoop\apps\nodejs-lts\current\bin\npm.CMD Browsers: Chrome: 97.0.4692.71 Edge: Spartan (44.19041.1266.0), Chromium (97.0.1072.62) Internet Explorer: Not Found npmPackages: react: ^17.0.2 => 17.0.2 react-dom: ^17.0.2 => 17.0.2 react-scripts: 5.0.0 => 5.0.0 npmGlobalPackages: create-react-app: Not Found

Steps to reproduce

1. set BROWSER in .env.local file
2. npm start

Expected behavior

Specified browser opens

Actual behavior

System default browser opens, not as specified above