E105: A comma is missing

Turf was reading a list – the fields of a struct, the variants of an enum, the arguments of a call, the items of an array – and found a second item without a comma in front of it. (The message says what it was looking for: usually “, or the closing bracket”.)

struct Point {    x: int    y: int           // no comma after `x: int`}add(1 2)             // no comma between the arguments

Separate the items with commas:

struct Point {    x: int,    y: int}add(1, 2)

It can also mean the list was supposed to end and the closing bracket is missing (see E104); the message names both possibilities because from where Turf stands it can’t tell which one you meant. A trailing comma after the last item is fine.

Run turf --explain E105 in a terminal to read this again.