just starting

kiwi.lua

@@ -345,7 +345,7 @@ end
 do
    --- Variables are the values the constraint solver calculates.
    ---@class kiwi.Var: ffi.cdata*
-   ---@overload fun(name: string): kiwi.Var
+   ---@overload fun(name: string?): kiwi.Var
    ---@operator mul(number): kiwi.Term
    ---@operator div(number): kiwi.Term
    ---@operator unm: kiwi.Term
@@ -559,7 +559,7 @@ do
    ---@param expr kiwi.Expression
    ---@param constant number
    ---@nodiscard
-   local function mul_expr_constant(expr, constant)
+   local function mul_expr_coeff(expr, constant)
       local ret = ffi_gc(ffi_new(Expression, expr.term_count), ckiwi.kiwi_expression_del_vars) --[[@as kiwi.Expression]]
       for i = 0, expr.term_count - 1 do
          local st = expr.terms_[i] --[[@as kiwi.Term]]
@@ -662,9 +662,9 @@ do
 
    function Expression_mt.__mul(a, b)
       if type(a) == "number" then
-         return mul_expr_constant(b, a)
+         return mul_expr_coeff(b, a)
       elseif type(b) == "number" then
-         return mul_expr_constant(a, b)
+         return mul_expr_coeff(a, b)
       end
       op_error(a, b, "*")
    end
@@ -673,11 +673,11 @@ do
       if type(b) ~= "number" then
          op_error(a, b, "/")
       end
-      return mul_expr_constant(a, 1.0 / b)
+      return mul_expr_coeff(a, 1.0 / b)
    end
 
    function Expression_mt:__unm()
-      return mul_expr_constant(self, -1.0)
+      return mul_expr_coeff(self, -1.0)
    end
 
    function Expression_mt.__add(a, b)
@@ -719,7 +719,7 @@ do
    --- Constraints can be built with arbitrary left and right hand expressions. But
    --- ultimately they all have the form `expression [op] 0`.
    ---@class kiwi.Constraint: ffi.cdata*
-   ---@overload fun(lhs: kiwi.Expression, rhs: kiwi.Expression?, op: kiwi.RelOp?, strength: number?): kiwi.Constraint
+   ---@overload fun(lhs: kiwi.Expression?, rhs: kiwi.Expression?, op: kiwi.RelOp?, strength: number?): kiwi.Constraint
    local Constraint_cls = {
       --- The strength of the constraint.
       ---@type fun(self: kiwi.Constraint): number