First stab at fixing the error, not a full success.

js/test_cases/helpers_gt/main.dust

@@ -40,3 +40,5 @@ Commented out because unicode breaks nom
 {@gt key=array_higher value=array_higher_longer}array_higher is greater than array_higher_longer{:else}array_higher is less than or equal to array_higher_longer{/gt}{~n}
 {@gt key=array_lower value=array_lower_with_array}array_lower is greater than array_lower_with_array{:else}array_lower is less than or equal to array_lower_with_array{/gt}{~n}
 {@gt key=array_lower_with_array value=array_lower}array_lower_with_array is greater than array_lower{:else}array_lower_with_array is less than or equal to array_lower{/gt}{~n}
+{@gt key=some_obj value=int}some_obj is greater than int{:else}some_obj is less than or equal to int{/gt}{~n}
+{@gt key=some_obj value="[object Object]"}some_obj is greater than "[object Object]"{:else}some_obj is less than or equal to "[object Object]"{/gt}{~n}

js/test_cases/helpers_gte/main.dust

@@ -39,3 +39,5 @@ Commented out because unicode breaks nom
 {@gte key=array_higher value=array_higher_longer}array_higher is greater than or equal to array_higher_longer{:else}array_higher is less than array_higher_longer{/gte}{~n}
 {@gte key=array_lower value=array_lower_with_array}array_lower is greater than or equal to array_lower_with_array{:else}array_lower is less than array_lower_with_array{/gte}{~n}
 {@gte key=array_lower_with_array value=array_lower}array_lower_with_array is greater than or equal to array_lower{:else}array_lower_with_array is less than array_lower{/gte}{~n}
+{@gte key=some_obj value=int}some_obj is greater than or equal to int{:else}some_obj is less than int{/gte}{~n}
+{@gte key=some_obj value="[object Object]"}some_obj is greater than or equal to "[object Object]"{:else}some_obj is less than "[object Object]"{/gte}{~n}

js/test_cases/helpers_lt/main.dust

@@ -39,3 +39,5 @@ Commented out because unicode breaks nom
 {@lt key=array_higher value=array_higher_longer}array_higher is less than array_higher_longer{:else}array_higher is greater than or equal to array_higher_longer{/lt}{~n}
 {@lt key=array_lower value=array_lower_with_array}array_lower is less than array_lower_with_array{:else}array_lower is greater than or equal to array_lower_with_array{/lt}{~n}
 {@lt key=array_lower_with_array value=array_lower}array_lower_with_array is less than array_lower{:else}array_lower_with_array is greater than or equal to array_lower{/lt}{~n}
+{@lt key=some_obj value=int}some_obj is less than int{:else}some_obj is greater than or equal to int{/lt}{~n}
+{@lt key=some_obj value="[object Object]"}some_obj is less than "[object Object]"{:else}some_obj is greater than or equal to "[object Object]"{/lt}{~n}

js/test_cases/helpers_lte/main.dust

@@ -39,3 +39,5 @@ Commented out because unicode breaks nom
 {@lte key=array_higher value=array_higher_longer}array_higher is less than or equal to array_higher_longer{:else}array_higher is greater than array_higher_longer{/lte}{~n}
 {@lte key=array_lower value=array_lower_with_array}array_lower is less than or equal to array_lower_with_array{:else}array_lower is greater than array_lower_with_array{/lte}{~n}
 {@lte key=array_lower_with_array value=array_lower}array_lower_with_array is less than or equal to array_lower{:else}array_lower_with_array is greater than array_lower{/lte}{~n}
+{@lte key=some_obj value=int}some_obj is less than or equal to int{:else}some_obj is greater than int{/lte}{~n}
+{@lte key=some_obj value="[object Object]"}some_obj is less than or equal to "[object Object]"{:else}some_obj is greater than "[object Object]"{/lte}{~n}

src/bin.rs

@@ -169,6 +169,14 @@ impl CompareContextElement for serde_json::Value {
     }
 
     fn partial_compare(&self, other: &dyn ContextElement) -> Option<Ordering> {
+        // Handle type coerced objects
+
+        // When doing a greater than or less than comparison,
+        // javascript coerces objects into "[object Object]".
+        if let serde_json::Value::Object(_) = self {
+            return "[object Object]".to_owned().partial_compare(other);
+        }
+
         // Handle other serde_json::Value
         match other.to_any().downcast_ref::<Self>() {
             None => (),
@@ -228,11 +236,30 @@ impl CompareContextElement for serde_json::Value {
         // Handle string literals
         match other.to_any().downcast_ref::<String>() {
             None => (),
-            Some(other_string) => {
+            Some(other_string) => match self {
-                return self
+                serde_json::Value::String(self_string) => {
-                    .as_str()
+                    return self_string.partial_cmp(other_string)
-                    .map_or(None, |s| s.partial_cmp(other_string.as_str()))
                 }
+                serde_json::Value::Number(self_number) => {
+                    match (
+                        self_number.as_u64(),
+                        self_number.as_i64(),
+                        self_number.as_f64(),
+                    ) {
+                        (Some(self_uint), _, _) => {
+                            return self_uint.to_string().partial_cmp(other_string)
+                        }
+                        (_, Some(self_int), _) => {
+                            return self_int.to_string().partial_cmp(other_string)
+                        }
+                        (_, _, Some(self_float)) => {
+                            return self_float.to_string().partial_cmp(other_string)
+                        }
+                        (None, None, None) => panic!("This should be impossible since u64 and i64 can both be converted to floats")
+                    }
+                }
+                _ => (),
+            },
         }
         // Handle numeric literals
         match other.to_any().downcast_ref::<u64>() {
@@ -256,3 +283,16 @@ impl CompareContextElement for serde_json::Value {
 fn convert_vec_to_context_element(array: &Vec<serde_json::Value>) -> Vec<&dyn ContextElement> {
     array.iter().map(|v| v as _).collect()
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_type_coercion_object_int() {
+        let x: serde_json::Value =
+            serde_json::from_str(r#"{"name": "cat"}"#).expect("Failed to parse json");
+        let y: u64 = 7;
+        assert_eq!(x.partial_compare(&y), Some(Ordering::Greater));
+    }
+}

src/renderer/renderer.rs

@@ -520,6 +520,11 @@ mod tests {
         fn equals(&self, other: &dyn ContextElement) -> bool {
             false
         }
+
+        fn partial_compare(&self, other: &dyn ContextElement) -> Option<Ordering> {
+            // TODO: Implement
+            None
+        }
     }
 
     #[test]