refactor: trim wasm blockers from shared api dependencies

Compile websocket-only exports out of codex-api on wasm and stop enabling Tokio net there by default. Also cut the Tokio process dependency out of wasm builds of codex-git-utils by gating the async git-info module, move codex-utils-image's Tokio dependency to tests, and enable uuid's js RNG feature for wasm in codex-protocol. Native cargo checks passed for codex-api, codex-git-utils, and codex-protocol after the refactor.

codex-rs/codex-api/Cargo.toml

@@ -15,9 +15,7 @@ http = { workspace = true }
 serde = { workspace = true, features = ["derive"] }
 serde_json = { workspace = true }
 thiserror = { workspace = true }
-tokio = { workspace = true, features = ["macros", "net", "rt", "sync", "time"] }
-tokio-tungstenite = { workspace = true }
-tungstenite = { workspace = true }
+tokio = { workspace = true, features = ["macros", "rt", "sync", "time"] }
 tracing = { workspace = true }
 eventsource-stream = { workspace = true }
 regex-lite = { workspace = true }
@@ -32,5 +30,10 @@ tokio-test = { workspace = true }
 wiremock = { workspace = true }
 reqwest = { workspace = true }
 
+[target.'cfg(not(target_arch = "wasm32"))'.dependencies]
+tokio = { workspace = true, features = ["net"] }
+tokio-tungstenite = { workspace = true }
+tungstenite = { workspace = true }
+
 [lints]
 workspace = true

codex-rs/codex-api/src/endpoint/mod.rs

@@ -1,7 +1,9 @@
 pub mod compact;
 pub mod memories;
 pub mod models;
+#[cfg(not(target_arch = "wasm32"))]
 pub mod realtime_websocket;
 pub mod responses;
+#[cfg(not(target_arch = "wasm32"))]
 pub mod responses_websocket;
 mod session;

codex-rs/codex-api/src/lib.rs

@@ -30,20 +30,30 @@ pub use crate::common::response_create_client_metadata;
 pub use crate::endpoint::compact::CompactClient;
 pub use crate::endpoint::memories::MemoriesClient;
 pub use crate::endpoint::models::ModelsClient;
+#[cfg(not(target_arch = "wasm32"))]
 pub use crate::endpoint::realtime_websocket::RealtimeEventParser;
+#[cfg(not(target_arch = "wasm32"))]
 pub use crate::endpoint::realtime_websocket::RealtimeSessionConfig;
+#[cfg(not(target_arch = "wasm32"))]
 pub use crate::endpoint::realtime_websocket::RealtimeSessionMode;
+#[cfg(not(target_arch = "wasm32"))]
 pub use crate::endpoint::realtime_websocket::RealtimeWebsocketClient;
+#[cfg(not(target_arch = "wasm32"))]
 pub use crate::endpoint::realtime_websocket::RealtimeWebsocketConnection;
 pub use crate::endpoint::responses::ResponsesClient;
 pub use crate::endpoint::responses::ResponsesOptions;
+#[cfg(not(target_arch = "wasm32"))]
 pub use crate::endpoint::responses_websocket::ResponsesWebsocketClient;
+#[cfg(not(target_arch = "wasm32"))]
 pub use crate::endpoint::responses_websocket::ResponsesWebsocketConnection;
 pub use crate::error::ApiError;
 pub use crate::provider::Provider;
 pub use crate::provider::is_azure_responses_wire_base_url;
 pub use crate::sse::stream_from_fixture;
 pub use crate::telemetry::SseTelemetry;
+#[cfg(not(target_arch = "wasm32"))]
 pub use crate::telemetry::WebsocketTelemetry;
+#[cfg(not(target_arch = "wasm32"))]
 pub use codex_protocol::protocol::RealtimeAudioFrame;
+#[cfg(not(target_arch = "wasm32"))]
 pub use codex_protocol::protocol::RealtimeEvent;

codex-rs/codex-api/src/telemetry.rs

@@ -11,7 +11,9 @@ use std::future::Future;
 use std::sync::Arc;
 use std::time::Duration;
 use tokio::time::Instant;
+#[cfg(not(target_arch = "wasm32"))]
 use tokio_tungstenite::tungstenite::Error;
+#[cfg(not(target_arch = "wasm32"))]
 use tokio_tungstenite::tungstenite::Message;
 
 /// Generic telemetry.
@@ -31,6 +33,7 @@ pub trait SseTelemetry: Send + Sync {
     );
 }
 
+#[cfg(not(target_arch = "wasm32"))]
 /// Telemetry for Responses WebSocket transport.
 pub trait WebsocketTelemetry: Send + Sync {
     fn on_ws_request(&self, duration: Duration, error: Option<&ApiError>, connection_reused: bool);

codex-rs/git-utils/Cargo.toml

@@ -17,7 +17,6 @@ schemars = { workspace = true }
 serde = { workspace = true, features = ["derive"] }
 tempfile = { workspace = true }
 thiserror = { workspace = true }
-tokio = { workspace = true, features = ["macros", "process", "rt", "time"] }
 ts-rs = { workspace = true, features = [
     "uuid-impl",
     "serde-json-impl",
@@ -28,3 +27,6 @@ walkdir = { workspace = true }
 [dev-dependencies]
 assert_matches = { workspace = true }
 pretty_assertions = { workspace = true }
+
+[target.'cfg(not(target_arch = "wasm32"))'.dependencies]
+tokio = { workspace = true, features = ["macros", "process", "rt", "time"] }

codex-rs/git-utils/src/lib.rs

@@ -5,6 +5,7 @@ mod apply;
 mod branch;
 mod errors;
 mod ghost_commits;
+#[cfg(not(target_arch = "wasm32"))]
 mod info;
 mod operations;
 mod platform;
@@ -29,20 +30,35 @@ pub use ghost_commits::create_ghost_commit_with_report;
 pub use ghost_commits::restore_ghost_commit;
 pub use ghost_commits::restore_ghost_commit_with_options;
 pub use ghost_commits::restore_to_commit;
+#[cfg(not(target_arch = "wasm32"))]
 pub use info::CommitLogEntry;
+#[cfg(not(target_arch = "wasm32"))]
 pub use info::GitDiffToRemote;
+#[cfg(not(target_arch = "wasm32"))]
 pub use info::GitInfo;
+#[cfg(not(target_arch = "wasm32"))]
 pub use info::collect_git_info;
+#[cfg(not(target_arch = "wasm32"))]
 pub use info::current_branch_name;
+#[cfg(not(target_arch = "wasm32"))]
 pub use info::default_branch_name;
+#[cfg(not(target_arch = "wasm32"))]
 pub use info::get_git_remote_urls;
+#[cfg(not(target_arch = "wasm32"))]
 pub use info::get_git_remote_urls_assume_git_repo;
+#[cfg(not(target_arch = "wasm32"))]
 pub use info::get_git_repo_root;
+#[cfg(not(target_arch = "wasm32"))]
 pub use info::get_has_changes;
+#[cfg(not(target_arch = "wasm32"))]
 pub use info::get_head_commit_hash;
+#[cfg(not(target_arch = "wasm32"))]
 pub use info::git_diff_to_remote;
+#[cfg(not(target_arch = "wasm32"))]
 pub use info::local_git_branches;
+#[cfg(not(target_arch = "wasm32"))]
 pub use info::recent_commits;
+#[cfg(not(target_arch = "wasm32"))]
 pub use info::resolve_root_git_project_for_trust;
 pub use platform::create_symlink;
 use schemars::JsonSchema;

codex-rs/protocol/Cargo.toml

@@ -42,6 +42,9 @@ anyhow = { workspace = true }
 pretty_assertions = { workspace = true }
 tempfile = { workspace = true }
 
+[target.'cfg(target_arch = "wasm32")'.dependencies]
+uuid = { workspace = true, features = ["js"] }
+
 [package.metadata.cargo-shear]
 # Required because:
 # `icu_provider`: contains a required `sync` feature for `icu_decimal`

codex-rs/utils/image/Cargo.toml

@@ -13,7 +13,7 @@ image = { workspace = true, features = ["jpeg", "png", "gif", "webp"] }
 codex-utils-cache = { workspace = true }
 mime_guess = { workspace = true }
 thiserror = { workspace = true }
-tokio = { workspace = true, features = ["fs", "rt", "rt-multi-thread", "macros"] }
 
 [dev-dependencies]
 image = { workspace = true, features = ["jpeg", "png", "gif", "webp"] }
+tokio = { workspace = true, features = ["fs", "rt", "rt-multi-thread", "macros"] }