Merge pull request #321 from maratth/rewrite

Code splitting

lib/callback.js

@@ -0,0 +1,38 @@
+function doError(obj, callback) {
+    if (callback)
+        callback(obj)
+}
+
+function isError(obj) {
+    return Boolean(
+        obj != null && typeof obj === "object" && !Array.isArray(obj) && obj.status
+    );
+}
+
+function doCallback(obj, callback) {
+
+    if (!callback)
+        return;
+
+    if (obj instanceof Error) {
+        callback(obj);
+        return;
+    }
+
+    if (isError(obj)) {
+        var error = new Error(obj.message);
+        var status = obj.status && obj.status.length && obj.status[0] || {};
+        error.gdscode = status.gdscode; // main error gds code
+        error.gdsparams = status.params; // parameters (constraint name, table, etc.)
+        callback(error);
+        return;
+    }
+
+    callback(undefined, obj);
+
+}
+
+module.exports = {
+    doError,
+    doCallback
+}