Typenv is a minimalistic, zero dependency, typed environment variables library. It does support the following types:

• Bool
• Duration
• Float64
• Float32
• Int64
• Int32
• Int8
• Int
• String

Handling environment variables in other type than strings or even handling fallback values is not a simple task, typenv makes easy to handle string, boolean, integer, float and time duration environment variables and also allows you to easily set default values for then.

Go get the library:

go get diegomarangoni.dev/typenv

And use it:

if typenv.Bool("DEBUG") {
	// do something
}

If the environment is NOT set, the zero value of the type will return, in this case false.

You can fallback to a default value in case the environment variable is not set.

if typenv.Bool("DEBUG", true) {
	// do something
}

If the environment is NOT set, the return value will be true.

You can also set a global default value for a environment. Useful when you use the same environment with same default value several times.

func init() {
	typenv.SetGlobalDefault(
		typenv.E(typenv.Bool, "DEBUG", true),
	)
}

...

if typenv.Bool("DEBUG") {
	// do something
}

If the environment is NOT set, the return value will be true.

You still can override the global default value by setting a local default.

func init() {
	typenv.SetGlobalDefault(
		typenv.E(typenv.Bool, "DEBUG", true),
	)
}

...

if typenv.Bool("DEBUG", false) {
	// do something
}

If environment is NOT set, the return value will be false, even if global default is telling that is true.