diff --git a/js/x11/core/xerrors.js b/js/x11/core/xerrors.js
new file mode 100644
index 0000000..fda672d
--- /dev/null
+++ b/js/x11/core/xerrors.js
@@ -0,0 +1,19 @@
+module.exports.errorText = {
+    1: 'Bad request',
+    2: 'Bad param value',
+    3: 'Bad window',
+    4: 'Bad pixmap',
+    5: 'Bad atom',
+    6: 'Bad cursor',
+    7: 'Bad font',
+    8: 'Bad match',
+    9: 'Bad drawable',
+   10: 'Bad access',
+   11: 'Bad alloc',
+   12: 'Bad colormap',
+   13: 'Bad GContext',
+   14: 'Bad ID choice',
+   15: 'Bad name',
+   16: 'Bad length',
+   17: 'Bad implementation'
+};