Pass environment variable from command line to yarn
i'd suggest you use the NPM module called cross-env. it allows adding particular env variables on the command line regardless of platform. with that said, you may try:
$ cross-env PORT=2344 yarn start:dev
You can chain commands on the Windows command prompt with &(or &&). To set a environment variable you need to use the set command.
The result should look like this: set PORT=1234 && yarn start:dev.
HTH, GL, HF :)
Found a solution for this problem in Windows command prompt.
Create a .env file in project root folder (outside src folder).
Define PORT in it. In my case, contents of .env file will be,
PORT=2344Run yarn start:dev
Application will use port number that you have specified in .env file.