Whether this calc uses SpS or SkS formula
OptionalbuffAdditional buff haste to use for this calculation (e.g. for PoM)
Longer description (e.g. '2.5 second GCD under Presence of Mind')
OptionalgaugeAdditional gauge haste to use for this calculation (e.g. Paeon)
The base GCD time to use for this calculation, typically 2.5
OptionalisWhether this is the "Primary" GCD that should be used for things that depend on a single GCD number, like materia auto-fill.
You should not have multiple primaries, with one exception. You can have a primary where basis === 'sks' and a primary where basis === 'sps'.
Slightly longer label (e.g. '2.5s GCD', '2.5s GCD with PoM')
Very short label (e.g. 'GCD', 'PoM GCD', '3.5 GCD'
The attack type to use for haste calculations (e.g. for NIN).