Add some.

lib/index.js

@@ -225,6 +225,20 @@ const Channel = function(bufferLength = 0) {
       })();
 
       return output;
+    },
+
+    some: async (callbackfn, thisArg) => {
+      for (;;) {
+        const value = await readOnly.shift();
+
+        if (value === undefined) {
+          return false;
+        } else {
+          if (callbackfn.call(thisArg, value)) {
+            return true;
+          }
+        }
+      }
     }
   });