console.log(settns("ship.registry-number")); > "NCC-1701"

settns("ship.registry-number", "NCC-1701-A");

console.log(settns("ship.name")); > "Enterprise"

console.log(settns("ship.registry-number")); > "NCC-1701-A"

console.log(settns.environment()); > "search for spock"

settns("ship.registry-number", "NCC-1701");

settns.environment("voyage home"); settns("ship.registry-number", "NCC-1701-A");

settns.environment("search for spock");

console.log(settns("ship.registry-number")); > "NCC-1701"

settns.environment("voyage home");

console.log(settns("ship.registry-number")); > "NCC-1701-A"

console.log(settns.environment()); > "voyage home"

console.log(settns("ship.registry-number")); > "NCC-1701-A"

settns.environment("next generation");

console.log(setns("ship.registry-number")); > "NCC-1701-D"

settns.default({ "server": { "port": 3000, "hostname": "example" } });

settns.environment("development", { "server.alias": ["localhost", "127.0.0.1"] });

settns.environment("production", { "server": { "port": 80, "hostname": "example.com", "alias": ["www.example.com"] } });