1 files changed, 34 insertions, 0 deletions
diff --git a/node_modules/es6-error/src/index.js b/node_modules/es6-error/src/index.js
new file mode 100644
index 000000000..e52b1613c
--- /dev/null
+++ b/node_modules/es6-error/src/index.js
@@ -0,0 +1,34 @@
+class ExtendableError extends Error {
+  constructor(message = '') {
+    super(message);
+
+    // extending Error is weird and does not propagate `message`
+    Object.defineProperty(this, 'message', {
+      configurable: true,
+      enumerable : false,
+      value : message,
+      writable : true,
+    });
+
+    Object.defineProperty(this, 'name', {
+      configurable: true,
+      enumerable : false,
+      value : this.constructor.name,
+      writable : true,
+    });
+
+    if (Error.hasOwnProperty('captureStackTrace')) {
+      Error.captureStackTrace(this, this.constructor);
+      return;
+    }
+
+    Object.defineProperty(this, 'stack', {
+      configurable: true,
+      enumerable : false,
+      value : (new Error(message)).stack,
+      writable : true,
+    });
+  }
+}
+
+export default ExtendableError;