Type Alias ExprNode

ExprNode:
    | { type: "literal"; value: number }
    | { type: "dice"; equation: string }
    | { type: "prop_ref"; target: string; property: string }
    | {
        type: "math";
        op: "add" | "sub" | "mul" | "floor_div";
        left: ExprNode;
        right: ExprNode;
    }