Feature Flags

[mnzaki]

Scope of the feature

Add build-time configurability for some constants or feature flags. Example uses:

• configure registry's built in smart contract address and ipfs connector
• enable/disable identity creation (use dummy identity instead)
• enable/disable entropy collection

There are a few ways:

• .env file through, of course, react-native-dotenv
  • can store config values for dev and prod envs in separate files, so we see the values in each environment in one place
• inline babel transformation of process.env['SOME_ENV_VAR'] via babel-plugin-transform-inline-env-variables
  • values are in process environment
    • config can be manually loaded into process env anyway
  • we'll probably depend on fewer vars, maybe just NODE_ENV, and making the config value decisions inline in code
• use pre-existing src/config.ts file?