Dart APIunself_styleUnFontWeightlight light constant Null safety FontWeight const light FontWeight value of w300 Implementation static const FontWeight light = FontWeight.w300; unself_style unself_style UnFontWeight light constant UnFontWeight class Constructors UnFontWeight Properties hashCode runtimeType Methods noSuchMethod toString Operators operator == Constants black bold extraBold extraLight light medium regular semiBold thin