Discussion on: Runtime Configurations with React

Thanks for the reply. Considering that these are runtime configs, one method you can use is creating the runtime-config.js file as part of the deployment pipeline.

I like to keep the config files per environment organized in json in my repository, so one method that I like to use is to have a different json file per environment (dev.config.json, stg.config.json, prod.config.json) making sure the file name is the same as the environment name and keeping the property names consistent

Ex dev json:

{
  "apiUrl": "testing.mattcat.dev"
}

Ex prod json:

{
  "apiUrl": "prod.mattcat.dev"
}

Then during the deployment pipeline as a step, calling a bash script to read in the proper environment json file and create the runtime-config.js file.

The bash script looks something like this:

#!/bin/sh -e

CONFIG_BASE_PATH="./app/configs"

touch "./app/env-config.js" # create generic file
ENV_CONFIG=$(node -p -e "JSON.stringify(require('./${CONFIG_BASE_PATH}/${BUILD_ENV}.config.json'))") # read proper json file

echo "window.envConfig = $ENV_CONFIG" >> "./app/env-config.js" # write json to generic file

Calling it like this during your deployment pipeline
BUILD_ENV=stg ./config-expansion.sh

I am sure you can find other ways to generate the run-config.js file but this is one method that has worked for me in the past.