Fix function name Square

src/infer.ts

@@ -18,10 +18,10 @@ const create = createFactory<{
 
 // These are our string based interfaces, which we can use both in typed-function and in TypeScript:
 const Multiply = 'multiply(number,number)=>number'
-const Sqrt = 'sqrt(number)=>number'
+const Square = 'square(number)=>number'
 const Zero = 'zero(number)=>number'
 
-const createSquare = create(Sqrt, [Multiply, Zero],dep =>
+const createSquare = create(Square, [Multiply, Zero], dep =>
     x => dep.multiply(x, x)
 )