Assigning process.env.VARIABLE = undefined actually does process.env.VARIABLE = "undefined" (I haven't investigated why). This lead to the constants-test.js test to wrongfully test the use-case when an environment variable is undefined. I switched it up to delete process.env.VARIABLE which properly leaves the property undefined.
Assigning
process.env.VARIABLE = undefinedactually doesprocess.env.VARIABLE = "undefined"(I haven't investigated why). This lead to theconstants-test.jstest to wrongfully test the use-case when an environment variable is undefined. I switched it up todelete process.env.VARIABLEwhich properly leaves the propertyundefined.