Table tuples

[Vurv78]

I've looked everywhere and I cannot seem to find any indication that tuples, or typed numeric table indices, exist.

Usually when documentation here refers to tuples it's in reference to multiple return values, but I'm referring to

local tuple = { 1, "foo", true }

For Emmylua/LuaLS, you'd type this as

---@type { [1]: number, [2]: string, [3]: boolean }

Such syntax almost exists in Luau?

type Tuple = { ["foo"]: number }

But providing a number instead of a string in the brackets gives a syntax error.

In typescript you'd do

type Tuple = [number, string, boolean]

But that syntax doesn't exist in Luau either. Nor does (number, string, boolean), or {number, string, boolean} (which would be nearly ambiguous with arrays.)

This is partially a question - partially to see if I need to continue this with an RFC. It would be nice to use tuples for simpler types like Spans instead of needing full field names. And I don't think the implementation would be very difficult considering the precedent with the existing syntax for strings I demonstrated.

[vegorov-rbx]

This feature is not supported in Luau.
We do not accept language feature requests as 'enhancement' issues.