1 files changed, 18 insertions, 0 deletions
diff --git a/op_crates/file/internal.d.ts b/op_crates/file/internal.d.ts
new file mode 100644
index 000000000..91a61d811
--- /dev/null
+++ b/op_crates/file/internal.d.ts
@@ -0,0 +1,18 @@
+// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
+
+/// <reference no-default-lib="true" />
+/// <reference lib="esnext" />
+
+declare namespace globalThis {
+  declare namespace __bootstrap {
+    declare var file: {
+      Blob: typeof Blob & {
+        [globalThis.__bootstrap.file._byteSequence]: Uint8Array;
+      };
+      _byteSequence: unique symbol;
+      File: typeof File & {
+        [globalThis.__bootstrap.file._byteSequence]: Uint8Array;
+      };
+    };
+  }
+}