Endpoint url in dev vs prod

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5

I tend to define a Config record and pass it round the application where it is needed:

type alias Config =
    { mainApiRoot : String
    , searchApiRoot : String
    , otherApiRoot : String
    , whateverParams : ...
    }

For quick start during initial development, you can just hard code it:

config =
    { mainApiRoot = http://localhost:8000/api, 
    ...
    }

At least that way you have the config built into the application from scratch. As you evolve more towards production, pass in appropriate prod/test/dev versions as flags.