Allow workspace to be built on wasm (#3840)

cts_runner/Cargo.toml

@@ -9,7 +9,9 @@ description = "CTS runner for wgpu"
 license.workspace = true
 publish = false
 
-[dependencies]
+# We make all dependencies conditional on not being wasm,
+# so the whole workspace can built as wasm.
+[target.'cfg(not(target_arch = "wasm32"))'.dependencies]
 deno_console.workspace = true
 deno_core.workspace = true
 deno_url.workspace = true

cts_runner/src/main.rs

@@ -1,3 +1,5 @@
+#[cfg(not(target_arch = "wasm32"))]
+mod native {
     use std::{
         env, fmt,
         io::{Read, Write},
@@ -19,12 +21,7 @@ use termcolor::Color::Red;
     use termcolor::ColorSpec;
     use termcolor::WriteColor;
 
-#[tokio::main(flavor = "current_thread")]
+    pub async fn run() -> Result<(), AnyError> {
-async fn main() {
-    unwrap_or_exit(run().await)
-}
-
-async fn run() -> Result<(), AnyError> {
         let mut args_iter = env::args();
         let _ = args_iter.next();
         let url = args_iter
@@ -131,7 +128,7 @@ fn get_error_class_name(e: &AnyError) -> &'static str {
             })
     }
 
-fn unwrap_or_exit<T>(result: Result<T, AnyError>) -> T {
+    pub fn unwrap_or_exit<T>(result: Result<T, AnyError>) -> T {
         match result {
             Ok(value) => value,
             Err(error) => {
@@ -166,3 +163,15 @@ impl deno_web::TimersPermission for Permissions {
 
         fn check_unstable(&self, _state: &deno_core::OpState, _api_name: &'static str) {}
     }
+}
+
+#[cfg(not(target_arch = "wasm32"))]
+#[tokio::main(flavor = "current_thread")]
+async fn main() {
+    native::unwrap_or_exit(native::run().await)
+}
+
+#[cfg(target_arch = "wasm32")]
+fn main() {
+    panic!("This is a native only module. It can't be run on the web!");
+}

deno_webgpu/Cargo.toml

@@ -16,14 +16,16 @@ path = "lib.rs"
 [features]
 surface = ["wgpu-core/raw-window-handle", "dep:raw-window-handle"]
 
-[dependencies]
+# We make all dependencies conditional on not being wasm,
+# so the whole workspace can built as wasm.
+[target.'cfg(not(target_arch = "wasm32"))'.dependencies]
 deno_core.workspace = true
 serde = { workspace = true, features = ["derive"] }
 tokio = { workspace = true, features = ["full"] }
 wgpu-types = { workspace = true, features = ["trace", "replay", "serde"] }
 raw-window-handle = { workspace = true, optional = true }
 
-[dependencies.wgpu-core]
+[target.'cfg(not(target_arch = "wasm32"))'.dependencies.wgpu-core]
 workspace = true
 features = ["trace", "replay", "serde", "strict_asserts", "wgsl", "gles"]
 

deno_webgpu/lib.rs

@@ -1,5 +1,5 @@
 // Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
-
+#![cfg(not(target_arch = "wasm32"))]
 #![warn(unsafe_op_in_unsafe_fn)]
 
 use deno_core::error::AnyError;