From 7e32269f3f230c5b714bbf70aa59d74f9a867373 Mon Sep 17 00:00:00 2001
From: Kitson Kelly <me@kitsonkelly.com>
Date: Mon, 4 May 2020 05:10:52 +1000
Subject: Add TransformStream and TransformStreamController (#5042)

---
 cli/js/lib.deno.shared_globals.d.ts | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)

(limited to 'cli/js/lib.deno.shared_globals.d.ts')

diff --git a/cli/js/lib.deno.shared_globals.d.ts b/cli/js/lib.deno.shared_globals.d.ts
index 8f73f0585..d96230447 100644
--- a/cli/js/lib.deno.shared_globals.d.ts
+++ b/cli/js/lib.deno.shared_globals.d.ts
@@ -423,6 +423,42 @@ interface WritableStreamDefaultWriter<W = any> {
   write(chunk: W): Promise<void>;
 }
 
+declare class TransformStream<I = any, O = any> {
+  constructor(
+    transformer?: Transformer<I, O>,
+    writableStrategy?: QueuingStrategy<I>,
+    readableStrategy?: QueuingStrategy<O>
+  );
+  readonly readable: ReadableStream<O>;
+  readonly writable: WritableStream<I>;
+}
+
+interface TransformStreamDefaultController<O = any> {
+  readonly desiredSize: number | null;
+  enqueue(chunk: O): void;
+  error(reason?: any): void;
+  terminate(): void;
+}
+
+interface Transformer<I = any, O = any> {
+  flush?: TransformStreamDefaultControllerCallback<O>;
+  readableType?: undefined;
+  start?: TransformStreamDefaultControllerCallback<O>;
+  transform?: TransformStreamDefaultControllerTransformCallback<I, O>;
+  writableType?: undefined;
+}
+
+interface TransformStreamDefaultControllerCallback<O> {
+  (controller: TransformStreamDefaultController<O>): void | PromiseLike<void>;
+}
+
+interface TransformStreamDefaultControllerTransformCallback<I, O> {
+  (
+    chunk: I,
+    controller: TransformStreamDefaultController<O>
+  ): void | PromiseLike<void>;
+}
+
 interface DOMStringList {
   /** Returns the number of strings in strings. */
   readonly length: number;
-- 
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