Merge pull request #186 from WebAssembly/update-wit-0.3.0-rc-2025-09-16

Update 0.3.0 WIT definitions to 0.3.0-rc-2025-09-16

Author: yoshuawuyts

wit-0.3.0-draft/deps.lock

@@ -1,8 +1,8 @@
 [cli]
 url = "https://github.com/WebAssembly/wasi-cli/archive/main.tar.gz"
 subdir = "wit-0.3.0-draft"
-sha256 = "7f9cf181100ca1cadcb49a1efa3e80828d375df2d5ddf10a8f66e848d423aea5"
-sha512 = "569f6b4ed2a3bec913e5e06fd35caab564048cf31632795c2fbdd8c40ddb5f5eea7b1cc59d33c80e5d7b642ed246ba4a3e40d3edeaaa2c6a5c4bcd02e0b67212"
+sha256 = "5ff03c236a6fed89d2968c3fd5d9e2b3f4fcd7a606dc94ead51df5357bdabe76"
+sha512 = "d0277a9b3692de917ef8b1bbe6be9247157d548962dde181b159788064a06513c6f6d775fcca94a3170fe2149ca75d609664938716f4dc877ef65cd7db07eb76"
 deps = ["clocks", "filesystem", "random", "sockets"]
 
 [clocks]

wit-0.3.0-draft/deps/cli/run.wit

@@ -2,5 +2,5 @@
 interface run {
   /// Run the program.
   @since(version = 0.3.0-rc-2025-08-15)
-  run: func() -> result;
+  run: async func() -> result;
 }

wit-0.3.0-draft/deps/cli/stdio.wit

@@ -1,17 +1,59 @@
+@since(version = 0.3.0-rc-2025-08-15)
+interface stdio {
+  @since(version = 0.3.0-rc-2025-08-15)
+  enum error-code {
+    /// Input/output error
+    io,
+    /// Invalid or incomplete multibyte or wide character
+    illegal-byte-sequence,
+    /// Broken pipe
+    pipe,
+  }
+}
+
 @since(version = 0.3.0-rc-2025-08-15)
 interface stdin {
+  /// Return a stream for reading from stdin.
+  ///
+  /// This function returns a stream which provides data read from stdin,
+  /// and a future to signal read results.
+  ///
+  /// If the stream's readable end is dropped the future will resolve to success.
+  ///
+  /// If the stream's writable end is dropped the future will either resolve to
+  /// success if stdin was closed by the writer or to an error-code if reading
+  /// failed for some other reason.
+  ///
+  /// Multiple streams may be active at the same time. The behavior of concurrent
+  /// reads is implementation-specific.
   @since(version = 0.3.0-rc-2025-08-15)
-  get-stdin: func() -> stream<u8>;
+  read-via-stream: func() -> tuple<stream<u8>, future<result<_, error-code>>>;
 }
 
 @since(version = 0.3.0-rc-2025-08-15)
 interface stdout {
+  /// Write the given stream to stdout.
+  ///
+  /// If the stream's writable end is dropped this function will either return
+  /// success once the entire contents of the stream have been written or an
+  /// error-code representing a failure.
+  ///
+  /// Otherwise if there is an error the readable end of the stream will be
+  /// dropped and this function will return an error-code.
   @since(version = 0.3.0-rc-2025-08-15)
-  set-stdout: func(data: stream<u8>);
+  write-via-stream: async func(data: stream<u8>) -> result<_, error-code>;
 }
 
 @since(version = 0.3.0-rc-2025-08-15)
 interface stderr {
+  /// Write the given stream to stderr.
+  ///
+  /// If the stream's writable end is dropped this function will either return
+  /// success once the entire contents of the stream have been written or an
+  /// error-code representing a failure.
+  ///
+  /// Otherwise if there is an error the readable end of the stream will be
+  /// dropped and this function will return an error-code.
   @since(version = 0.3.0-rc-2025-08-15)
-  set-stderr: func(data: stream<u8>);
+  write-via-stream: async func(data: stream<u8>) -> result<_, error-code>;
 }

wit-0.3.0-draft/proxy.wit

@@ -1,22 +1,22 @@
-package wasi:http@0.3.0-rc-2025-08-15;
+package wasi:http@0.3.0-rc-2025-09-16;
 
 /// The `wasi:http/imports` world imports all the APIs for HTTP proxies.
 /// It is intended to be `include`d in other worlds.
 world imports {
   /// HTTP proxies have access to time and randomness.
-  include wasi:clocks/imports@0.3.0-rc-2025-08-15;
-  import wasi:random/random@0.3.0-rc-2025-08-15;
+  include wasi:clocks/imports@0.3.0-rc-2025-09-16;
+  import wasi:random/random@0.3.0-rc-2025-09-16;
 
   /// Proxies have standard output and error streams which are expected to
   /// terminate in a developer-facing console provided by the host.
-  import wasi:cli/stdout@0.3.0-rc-2025-08-15;
-  import wasi:cli/stderr@0.3.0-rc-2025-08-15;
+  import wasi:cli/stdout@0.3.0-rc-2025-09-16;
+  import wasi:cli/stderr@0.3.0-rc-2025-09-16;
 
   /// TODO: this is a temporary workaround until component tooling is able to
   /// gracefully handle the absence of stdin. Hosts must return an eof stream
   /// for this import, which is what wasi-libc + tooling will do automatically
   /// when this import is properly removed.
-  import wasi:cli/stdin@0.3.0-rc-2025-08-15;
+  import wasi:cli/stdin@0.3.0-rc-2025-09-16;
 
   /// This is the default handler to use when user code simply wants to make an
   /// HTTP request (e.g., via `fetch()`).

wit-0.3.0-draft/types.wit

@@ -1,7 +1,7 @@
 /// This interface defines all of the types and methods for implementing HTTP
 /// Requests and Responses, as well as their headers, trailers, and bodies.
 interface types {
-  use wasi:clocks/monotonic-clock@0.3.0-rc-2025-08-15.{duration};
+  use wasi:clocks/monotonic-clock@0.3.0-rc-2025-09-16.{duration};
 
   /// This type corresponds to HTTP standard Methods.
   variant method {