// Feature testing // Test if the pow() function exists @function ms-pow-exists() { @if pow(4, 2) == 16 { @return true; } @return false; } $MS-pow-exists: ms-pow-exists(); // Test if MS was installed via the gem @function ms-gem-exists() { @if ms-gem-installed() == true { @return true; } @return false; } $MS-gem-exists: ms-gem-exists();