The artificer infusion Radiant Weapon has the following property as one of it's effects:
As a reaction immediately after being hit by an attack, the wielder can expend 1 charge and cause the attacker to be blinded until the end of the attacker’s next turn, unless the attacker succeeds on a Constitution saving throw against your spell save DC.
This effect does not impose any restriction to the attacker condition, but to me it seems odd that the weapon can blind a long ranged attacker or someone who is hidden, and therefore the wielder of the radiant weapon doesn't even know his position.
Am I missing something? Does that really how the infusion works? I know the official artificer is recent, but is there any errata or sage advice about this effect of the infusion?