If you do not declare a constructor on a subclass, a default constructor is created and it does not call the superclass one, which creates behavior inconsistent with ts.
Here is the example:
class C {
x: number
constructor(y: number) {
this.x = y
}
}
class D extends C {
}
const d = new D(12);
// d.x should be 12This is transpiled to
C = C or {}
C.__index = C
function C.new(construct, ...)
local self = setmetatable({}, C)
if construct and C.constructor then C.constructor(self, ...) end
return self
end
function C.constructor(self,y)
self.x = y;
end
D = D or C.new()
D.__index = D
D.__base = C
function D.new(construct, ...)
local self = setmetatable({}, D)
if construct and D.constructor then D.constructor(self, ...) end
return self
end
function D.constructor(self)
end
local d = D.new(true,12);
-- d.x is nilThe problem is the default constructor
function D.constructor(self)
end
It should probably be something like this
function D.constructor(self, ...)
D.__base.constructor(self, ...)
end
If you do not declare a constructor on a subclass, a default constructor is created and it does not call the superclass one, which creates behavior inconsistent with ts.
Here is the example:
This is transpiled to
The problem is the default constructor
It should probably be something like this