1 files changed, 30 insertions, 0 deletions
diff --git a/node_modules/rxjs/src/internal/util/UnsubscriptionError.ts b/node_modules/rxjs/src/internal/util/UnsubscriptionError.ts
new file mode 100644
index 0000000..cd7d09f
--- /dev/null
+++ b/node_modules/rxjs/src/internal/util/UnsubscriptionError.ts
@@ -0,0 +1,30 @@
+import { createErrorClass } from './createErrorClass';
+
+export interface UnsubscriptionError extends Error {
+  readonly errors: any[];
+}
+
+export interface UnsubscriptionErrorCtor {
+  /**
+   * @deprecated Internal implementation detail. Do not construct error instances.
+   * Cannot be tagged as internal: https://github.com/ReactiveX/rxjs/issues/6269
+   */
+  new (errors: any[]): UnsubscriptionError;
+}
+
+/**
+ * An error thrown when one or more errors have occurred during the
+ * `unsubscribe` of a {@link Subscription}.
+ */
+export const UnsubscriptionError: UnsubscriptionErrorCtor = createErrorClass(
+  (_super) =>
+    function UnsubscriptionErrorImpl(this: any, errors: (Error | string)[]) {
+      _super(this);
+      this.message = errors
+        ? `${errors.length} errors occurred during unsubscription:
+${errors.map((err, i) => `${i + 1}) ${err.toString()}`).join('\n  ')}`
+        : '';
+      this.name = 'UnsubscriptionError';
+      this.errors = errors;
+    }
+);