E107: An opening brace or parenthesis is missing

Turf expected { to start a block (or ( to start a parameter list) and found something else.

In Turf the body of a function, if, elseif, while, for, do, unsafe, compare, struct, enum and machine is always wrapped in braces – there is no single-statement shortcut:

if x > 0 return 1;           // no bracesif x > 0 {    return 1;}

The same goes for a function name that isn’t followed by its parameter list:

fn main: int { ... }         // needs ()fn main(): int { ... }

If you want a one-line choice between two values, use the ternary form instead of a braceless if: give a otherwise b.

Run turf --explain E107 in a terminal to read this again.