Curry II

Requirements

• Export curry as named and default. Accept a function and use fn.length as its required argument count.
• Accumulate arguments across grouped calls in order. Invoke fn on the first call where the total count reaches or exceeds its arity, forwarding all collected arguments, including extras.
• Empty calls do not add arguments. For arity zero, invoke fn on the first wrapper call, never while creating the wrapper.
• Each partial application must be independently reusable. Use the this value of the final call when invoking fn. Explicit undefined counts as an argument.
• Return the exact result and propagate errors. Placeholders, constructors, and inferring an arity different from fn.length are outside scope.
• The provided TypeScript Curried type tracks the result type but intentionally accepts unknown argument groups; compile-time tracking of every partial tuple is not required.

Examples

Input: curry((a, b, c) => a + b + c)(1, 2)(3)
Output: 6

Input: const add = curry((a, b, c) => a + b + c);
const one = add(1);
[one(2, 3), one(4)(5)]
Output: [6, 10]