install gulp to process code

node_modules/bare-events/lib/errors.js

@@ -0,0 +1,22 @@
+module.exports = class EventEmitterError extends Error {
+  constructor (msg, code, fn = EventEmitterError, opts) {
+    super(`${code}: ${msg}`, opts)
+    this.code = code
+
+    if (Error.captureStackTrace) {
+      Error.captureStackTrace(this, fn)
+    }
+  }
+
+  get name () {
+    return 'EventEmitterError'
+  }
+
+  static OPERATION_ABORTED (cause, msg = 'Operation aborted') {
+    return new EventEmitterError(msg, 'OPERATION_ABORTED', EventEmitterError.OPERATION_ABORTED, { cause })
+  }
+
+  static UNHANDLED_ERROR (cause, msg = 'Unhandled error') {
+    return new EventEmitterError(msg, 'UNHANDLED_ERROR', EventEmitterError.UNHANDLED_ERROR, { cause })
+  }
+}