projects/common/stepper/provide-cngx-stepper.ts
Union of every feature kind provideCngxStepper accepts. Today: config (CNGX_STEPPER_CONFIG) and i18n (CNGX_STEPPER_I18N). Future surfaces widen this union and dispatch via the hidden _target discriminator.
CNGX_STEPPER_CONFIG
CNGX_STEPPER_I18N
_target
CngxStepperConfigFeature | CngxStepperI18nFeature