Remove serde from default feature.

Cargo.toml

@@ -21,7 +21,7 @@ num-traits = { version = "0.2.11", default-features = false }
 
 [features]
 #default = ["unchecked", "sync", "no_optimize", "no_float", "only_i32", "no_index", "no_object", "no_function", "no_module"]
-default = ["serde"]
+default = []
 plugins = []
 unchecked = []      # unchecked arithmetic
 sync = []           # restrict to only types that implement Send + Sync

src/lib.rs

@@ -87,6 +87,7 @@ pub mod packages;
 mod parser;
 mod result;
 mod scope;
+#[cfg(feature = "serde")]
 mod serde;
 mod stdlib;
 mod token;

src/parser.rs

@@ -1701,7 +1701,7 @@ fn make_dot_expr(lhs: Expr, rhs: Expr, op_pos: Position) -> Result<Expr, ParseEr
         // lhs.func()
         (lhs, func @ Expr::FnCall(_)) => Expr::Dot(Box::new((lhs, func, op_pos))),
         // lhs.rhs
-        (lhs, rhs) => return Err(PERR::PropertyExpected.into_err(rhs.position())),
+        (_, rhs) => return Err(PERR::PropertyExpected.into_err(rhs.position())),
     })
 }