diff --git a/src/func/builtin.rs b/src/func/builtin.rs
index aad1f1d7..38a73af8 100644
--- a/src/func/builtin.rs
+++ b/src/func/builtin.rs
@@ -274,6 +274,30 @@ pub fn get_builtin_binary_op_fn(
         };
     }
 
+    // blob
+    #[cfg(not(feature = "no_index"))]
+    if type1 == TypeId::of::<crate::Blob>() {
+        use crate::Blob;
+
+        if type2 == TypeId::of::<INT>() {
+            return match op {
+                OP_CONTAINS => Some(|_, args| {
+                    let range = &*args[0].read_lock::<Blob>().expect(BUILTIN);
+                    let x = (args[1].as_int().expect("`INT`") & 0x000000ff) as u8;
+                    Ok(range.contains(&x).into())
+                }),
+                _ => None,
+            };
+        }
+        if type1 == type2 {
+            return match op {
+                "==" => Some(impl_op!(Blob == Blob)),
+                "!=" => Some(impl_op!(Blob != Blob)),
+                _ => None,
+            };
+        }
+    }
+
     // map op string
     #[cfg(not(feature = "no_object"))]
     if types_pair == (TypeId::of::<crate::Map>(), TypeId::of::<ImmutableString>()) {
diff --git a/src/packages/blob_basic.rs b/src/packages/blob_basic.rs
index aea9851c..8d63a2a7 100644
--- a/src/packages/blob_basic.rs
+++ b/src/packages/blob_basic.rs
@@ -366,26 +366,6 @@ mod blob_functions {
 
         drained
     }
-    pub fn contains(blob: &mut Blob, value: Dynamic) -> bool {
-        if blob.is_empty() {
-            return false;
-        }
-
-        let value = match value.as_int() {
-            Ok(value) => value as u8,
-            _ => return false,
-        };
-
-        blob.contains(&value)
-    }
-    #[rhai_fn(name = "==", pure)]
-    pub fn equals(blob1: &mut Blob, blob2: Blob) -> bool {
-        &*blob1 == &blob2
-    }
-    #[rhai_fn(name = "!=", pure)]
-    pub fn not_equals(blob1: &mut Blob, blob2: Blob) -> bool {
-        &*blob1 != &blob2
-    }
 
     #[inline]
     fn parse_int(blob: &mut Blob, start: INT, len: INT, is_le: bool) -> INT {
diff --git a/src/packages/map_basic.rs b/src/packages/map_basic.rs
index f8338043..eec7f678 100644
--- a/src/packages/map_basic.rs
+++ b/src/packages/map_basic.rs
@@ -17,14 +17,6 @@ def_package!(crate:BasicMapPackage:"Basic object map utilities.", lib, {
 
 #[export_module]
 mod map_functions {
-    #[rhai_fn(name = "has", pure)]
-    pub fn contains(map: &mut Map, prop: ImmutableString) -> bool {
-        if map.is_empty() {
-            false
-        } else {
-            map.contains_key(prop.as_str())
-        }
-    }
     #[rhai_fn(pure)]
     pub fn len(map: &mut Map) -> INT {
         map.len() as INT