Ergonomic bindings to database drivers are so frustrating

For variable tuple length, the react bindings just define a different function for each length which I think works pretty well

@send external query: (Pool.t, string, 'a) => 'b = "query"
@send external query2: (Pool.t, string, ('a, 'b)) => 'c = "query"
@send external query3: (Pool.t, string, ('a, 'b, 'c)) => 'd = "query"
@send external query4: (Pool.t, string, ('a, 'b, 'c, 'd)) => 'e = "query"