remove useless _page field from WritableStream*

src/browser/webapi/streams/TransformStream.zig

@@ -29,7 +29,6 @@ pub const DefaultController = TransformStreamDefaultController;
 
 pub const ZigTransformFn = *const fn (*TransformStreamDefaultController, js.Value) anyerror!void;
 
-_page: *Page,
 _readable: *ReadableStream,
 _writable: *WritableStream,
 _controller: *TransformStreamDefaultController,
@@ -44,7 +43,6 @@ pub fn init(transformer_: ?Transformer, page: *Page) !*TransformStream {
     const readable = try ReadableStream.init(null, null, page);
 
     const self = try page._factory.create(TransformStream{
-        ._page = page,
         ._readable = readable,
         ._writable = undefined,
         ._controller = undefined,
@@ -74,7 +72,6 @@ pub fn initWithZigTransform(zig_transform: ZigTransformFn, page: *Page) !*Transf
     const readable = try ReadableStream.init(null, null, page);
 
     const self = try page._factory.create(TransformStream{
-        ._page = page,
         ._readable = readable,
         ._writable = undefined,
         ._controller = undefined,
@@ -152,7 +149,6 @@ pub fn registerTypes() []const type {
 }
 
 pub const TransformStreamDefaultController = struct {
-    _page: *Page,
     _stream: *TransformStream,
     _transform_fn: ?js.Function.Global,
     _flush_fn: ?js.Function.Global,
@@ -166,7 +162,6 @@ pub const TransformStreamDefaultController = struct {
         page: *Page,
     ) !*TransformStreamDefaultController {
         return page._factory.create(TransformStreamDefaultController{
-            ._page = page,
             ._stream = stream,
             ._transform_fn = transform_fn,
             ._flush_fn = flush_fn,

src/browser/webapi/streams/WritableStream.zig

@@ -31,7 +31,6 @@ pub const State = enum {
     errored,
 };
 
-_page: *Page,
 _state: State,
 _writer: ?*WritableStreamDefaultWriter,
 _controller: *WritableStreamDefaultController,
@@ -50,7 +49,6 @@ const UnderlyingSink = struct {
 
 pub fn init(sink_: ?UnderlyingSink, page: *Page) !*WritableStream {
     const self = try page._factory.create(WritableStream{
-        ._page = page,
         ._state = .writable,
         ._writer = null,
         ._controller = undefined,
@@ -75,7 +73,6 @@ pub fn init(sink_: ?UnderlyingSink, page: *Page) !*WritableStream {
 
 pub fn initForTransform(transform_stream: *TransformStream, page: *Page) !*WritableStream {
     const self = try page._factory.create(WritableStream{
-        ._page = page,
         ._state = .writable,
         ._writer = null,
         ._controller = undefined,

src/browser/webapi/streams/WritableStreamDefaultController.zig

@@ -22,12 +22,10 @@ const WritableStream = @import("WritableStream.zig");
 
 const WritableStreamDefaultController = @This();
 
-_page: *Page,
 _stream: *WritableStream,
 
 pub fn init(stream: *WritableStream, page: *Page) !*WritableStreamDefaultController {
     return page._factory.create(WritableStreamDefaultController{
-        ._page = page,
         ._stream = stream,
     });
 }

src/browser/webapi/streams/WritableStreamDefaultWriter.zig

@@ -22,12 +22,10 @@ const WritableStream = @import("WritableStream.zig");
 
 const WritableStreamDefaultWriter = @This();
 
-_page: *Page,
 _stream: ?*WritableStream,
 
 pub fn init(stream: *WritableStream, page: *Page) !*WritableStreamDefaultWriter {
     return page._factory.create(WritableStreamDefaultWriter{
-        ._page = page,
         ._stream = stream,
     });
 }