fix: number serialization

core/expression/src/variable/ser.rs

@@ -1,5 +1,7 @@
 use crate::variable::Variable;
-use serde::{ser, Serialize, Serializer};
+use rust_decimal::prelude::ToPrimitive;
+use serde::ser::SerializeMap;
+use serde::{Serialize, Serializer};
 
 impl Serialize for Variable {
     fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
@@ -9,7 +11,21 @@ impl Serialize for Variable {
         match self {
             Variable::Null => serializer.serialize_unit(),
             Variable::Bool(v) => serializer.serialize_bool(*v),
-            Variable::Number(v) => ser::Serialize::serialize(v, serializer),
+            Variable::Number(v) => {
+                if let Some(float) = v.to_f64() {
+                    return serializer.serialize_f64(float);
+                }
+
+                if let Some(integer) = v.to_i128() {
+                    return serializer.serialize_i128(integer);
+                }
+
+                let string_value = v.to_string();
+
+                let mut map = serializer.serialize_map(Some(1))?;
+                map.serialize_entry("$serde_json::private::Number", &string_value)?;
+                map.end()
+            }
             Variable::String(v) => serializer.serialize_str(v),
             Variable::Array(v) => {
                 let borrowed = v.borrow();