Fix a bunch of things

src/bun.js/webcore/streams.zig

@@ -2909,11 +2909,23 @@ pub const FileSink = struct {
     pub fn onWrite(this: *FileSink, amount: usize, done: bool) void {
         log("onWrite({d}, {any})", .{ amount, done });
 
+        this.written += amount;
+
         // Only keep the event loop ref'd while there's a pending write in progress.
         // If there's no pending write, no need to keep the event loop ref'd.
         this.writer.updateRef(this.eventLoop(), false);
 
-        this.written += amount;
+        // If the developer requested to close the writer (.end() in node streams)
+        //
+        // but:
+        // 1) We haven't finished writing yet
+        // 2) We haven't received EOF
+        if (this.done and !done and this.writer.hasPendingData()) {
+            if (this.pending.state == .pending) {
+                this.pending.consumed += @truncate(amount);
+            }
+            return;
+        }
 
         if (this.pending.state == .pending) {
             this.pending.consumed += @truncate(amount);
@@ -2925,7 +2937,7 @@ pub const FileSink = struct {
 
             this.runPending();
 
-            if (this.done and done) {
+            if (this.done and !done and this.writer.getBuffer().len == 0) {
                 // if we call end/endFromJS and we have some pending returned from .flush() we should call writer.end()
                 this.writer.end();
             }
@@ -3276,7 +3288,7 @@ pub const FileReader = struct {
     pending_view: []u8 = &.{},
     fd: bun.FileDescriptor = bun.invalid_fd,
     started: bool = false,
-    started_from_js: bool = false,
+    waiting_for_onReaderDone: bool = false,
     event_loop: JSC.EventLoopHandle,
     lazy: Lazy = .{ .none = {} },
     buffered: std.ArrayListUnmanaged(u8) = .{},
@@ -3419,6 +3431,7 @@ pub const FileReader = struct {
                             pollable = opened.pollable;
                             file_type = opened.file_type;
                             this.reader.flags.nonblocking = opened.nonblocking;
+                            this.reader.flags.pollable = pollable;
                         },
                     }
                 },
@@ -3436,23 +3449,32 @@ pub const FileReader = struct {
 
         if (was_lazy) {
             _ = this.parent().incrementCount();
-            this.started_from_js = true;
+            this.waiting_for_onReaderDone = true;
             switch (this.reader.start(this.fd, pollable)) {
                 .result => {},
                 .err => |e| {
                     return .{ .err = e };
                 },
             }
+        } else if (comptime Environment.isPosix) {
+            if (this.reader.flags.pollable and !this.reader.isDone()) {
+                this.waiting_for_onReaderDone = true;
+                _ = this.parent().incrementCount();
+            }
         }
 
         if (comptime Environment.isPosix) {
-            if (this.reader.handle.getPoll()) |poll| {
-                if (file_type == .pipe or file_type == .nonblocking_pipe) {
-                    poll.flags.insert(.fifo);
-                }
+            if (file_type == .socket) {
+                this.reader.flags.socket = true;
+            }
 
-                if (file_type == .socket) {
+            if (this.reader.handle.getPoll()) |poll| {
+                if (file_type == .socket or this.reader.flags.socket) {
                     poll.flags.insert(.socket);
+                } else {
+                    // if it's a TTY, we report it as a fifo
+                    // we want the behavior to be as though it were a blocking pipe.
+                    poll.flags.insert(.fifo);
                 }
 
                 if (this.reader.flags.nonblocking) {
@@ -3470,6 +3492,10 @@ pub const FileReader = struct {
                 this.buffered = .{};
                 return .{ .owned_and_done = bun.ByteList.init(buffered.items) };
             }
+        } else if (comptime Environment.isPosix) {
+            if (!was_lazy and this.reader.flags.pollable) {
+                this.reader.read();
+            }
         }
 
         return .{ .ready = {} };
@@ -3536,8 +3562,6 @@ pub const FileReader = struct {
                 this.pending_value.clear();
                 this.pending_view = &.{};
                 this.reader.buffer().clearAndFree();
-                this.reader.close();
-                this.done = true;
                 this.pending.run();
                 return false;
             }
@@ -3775,8 +3799,8 @@ pub const FileReader = struct {
         }
 
         this.parent().onClose();
-        if (this.started_from_js) {
-            this.started_from_js = false;
+        if (this.waiting_for_onReaderDone) {
+            this.waiting_for_onReaderDone = false;
             _ = this.parent().decrementCount();
         }
     }

src/io/PipeWriter.zig

@@ -454,6 +454,10 @@ pub fn PosixStreamingWriter(
             }
         }
 
+        pub fn hasPendingData(this: *const PosixWriter) bool {
+            return this.buffer.items.len > 0;
+        }
+
         fn closeWithoutReporting(this: *PosixWriter) void {
             if (this.getFd() != bun.invalid_fd) {
                 std.debug.assert(!this.closed_without_reporting);
@@ -1071,7 +1075,7 @@ pub fn WindowsStreamingWriter(
             return .{ .result = {} };
         }
 
-        fn hasPendingData(this: *WindowsWriter) bool {
+        pub fn hasPendingData(this: *const WindowsWriter) bool {
             return (this.outgoing.isNotEmpty() or this.current_payload.isNotEmpty());
         }