{app_title}
diff --git a/packages/cli/src/build/request.rs b/packages/cli/src/build/request.rs
index 17bdd2f60f..576e38333a 100644
--- a/packages/cli/src/build/request.rs
+++ b/packages/cli/src/build/request.rs
@@ -3364,8 +3364,14 @@ impl BuildRequest {
wasm_opt::optimize(&post_bindgen_wasm, &post_bindgen_wasm, &wasm_opt_options).await?;
}
- // In release mode, we make the wasm and bindgen files into assets so they get bundled with max
- // optimizations.
+ if self.should_bundle_to_asset() {
+ // Make sure to register the main wasm file with the asset system
+ assets.register_asset(&post_bindgen_wasm, AssetOptions::Unknown)?;
+ }
+
+ // Now that the wasm is registered as an asset, we can write the js glue shim
+ self.write_js_glue_shim(assets)?;
+
if self.should_bundle_to_asset() {
// Register the main.js with the asset system so it bundles in the snippets and optimizes
assets.register_asset(
@@ -3374,53 +3380,89 @@ impl BuildRequest {
)?;
}
- if self.should_bundle_to_asset() {
- // Make sure to register the main wasm file with the asset system
- assets.register_asset(&post_bindgen_wasm, AssetOptions::Unknown)?;
- }
-
// Write the index.html file with the pre-configured contents we got from pre-rendering
self.write_index_html(assets)?;
Ok(())
}
+ fn write_js_glue_shim(&self, assets: &AssetManifest) -> Result<()> {
+ let wasm_path = self.bundled_wasm_path(assets);
+
+ // Load and initialize wasm without requiring a separate javascript file.
+ // This also allows using a strict Content-Security-Policy.
+ let mut js = std::fs::OpenOptions::new()
+ .append(true)
+ .open(self.wasm_bindgen_js_output_file())?;
+ let mut buf_writer = std::io::BufWriter::new(&mut js);
+ writeln!(
+ buf_writer,
+ r#"
+window.__wasm_split_main_initSync = initSync;
+
+// Actually perform the load
+__wbg_init({{module_or_path: "/{}/{wasm_path}"}}).then((wasm) => {{
+ // assign this module to be accessible globally
+ window.__dx_mainWasm = wasm;
+ window.__dx_mainInit = __wbg_init;
+ window.__dx_mainInitSync = initSync;
+ window.__dx___wbg_get_imports = __wbg_get_imports;
+
+ if (wasm.__wbindgen_start == undefined) {{
+ wasm.main();
+ }}
+}});
+"#,
+ self.base_path_or_default(),
+ )?;
+
+ Ok(())
+ }
+
/// Write the index.html file to the output directory. This must be called after the wasm and js
/// assets are registered with the asset system if this is a release build.
pub(crate) fn write_index_html(&self, assets: &AssetManifest) -> Result<()> {
- // Get the path to the wasm-bindgen output files. Either the direct file or the opitmized one depending on the build mode
- let wasm_bindgen_wasm_out = self.wasm_bindgen_wasm_output_file();
- let wasm_path = if self.should_bundle_to_asset() {
+ let wasm_path = self.bundled_wasm_path(assets);
+ let js_path = self.bundled_js_path(assets);
+
+ // Write the index.html file with the pre-configured contents we got from pre-rendering
+ std::fs::write(
+ self.root_dir().join("index.html"),
+ self.prepare_html(assets, &wasm_path, &js_path).unwrap(),
+ )?;
+
+ Ok(())
+ }
+
+ fn bundled_js_path(&self, assets: &AssetManifest) -> String {
+ let wasm_bindgen_js_out = self.wasm_bindgen_js_output_file();
+ if self.should_bundle_to_asset() {
let name = assets
- .get_first_asset_for_source(&wasm_bindgen_wasm_out)
- .expect("The wasm source must exist before creating index.html");
+ .get_first_asset_for_source(&wasm_bindgen_js_out)
+ .expect("The js source must exist before creating index.html");
format!("assets/{}", name.bundled_path())
} else {
format!(
"wasm/{}",
- wasm_bindgen_wasm_out.file_name().unwrap().to_str().unwrap()
+ wasm_bindgen_js_out.file_name().unwrap().to_str().unwrap()
)
- };
+ }
+ }
- let wasm_bindgen_js_out = self.wasm_bindgen_js_output_file();
- let js_path = if self.should_bundle_to_asset() {
+ /// Get the path to the wasm-bindgen output files. Either the direct file or the opitmized one depending on the build mode
+ fn bundled_wasm_path(&self, assets: &AssetManifest) -> String {
+ let wasm_bindgen_wasm_out = self.wasm_bindgen_wasm_output_file();
+ if self.should_bundle_to_asset() {
let name = assets
- .get_first_asset_for_source(&wasm_bindgen_js_out)
- .expect("The js source must exist before creating index.html");
+ .get_first_asset_for_source(&wasm_bindgen_wasm_out)
+ .expect("The wasm source must exist before creating index.html");
format!("assets/{}", name.bundled_path())
} else {
format!(
"wasm/{}",
- wasm_bindgen_js_out.file_name().unwrap().to_str().unwrap()
+ wasm_bindgen_wasm_out.file_name().unwrap().to_str().unwrap()
)
- };
-
- // Write the index.html file with the pre-configured contents we got from pre-rendering
- std::fs::write(
- self.root_dir().join("index.html"),
- self.prepare_html(assets, &wasm_path, &js_path).unwrap(),
- )?;
- Ok(())
+ }
}
fn info_plist_contents(&self, platform: Platform) -> Result {
@@ -3908,7 +3950,7 @@ impl BuildRequest {
self.inject_resources(assets, wasm_path, &mut html)?;
// Inject loading scripts if they are not already present
- self.inject_loading_scripts(&mut html);
+ self.inject_loading_scripts(assets, &mut html);
// Replace any special placeholders in the HTML with resolved values
self.replace_template_placeholders(&mut html, wasm_path, js_path);
@@ -4000,7 +4042,7 @@ impl BuildRequest {
// Manually inject the wasm file for preloading. WASM currently doesn't support preloading in the manganis asset system
head_resources.push_str(&format!(
- ""
+ ""
));
Self::replace_or_insert_before("{style_include}", "
- // We can't use a module script here because we need to start the script immediately when streaming
- import("/{base_path}/{js_path}").then(
- ({ default: init, initSync, __wbg_get_imports }) => {
- // export initSync in case a split module needs to initialize
- window.__wasm_split_main_initSync = initSync;
-
- // Actually perform the load
- init({module_or_path: "/{base_path}/{wasm_path}"}).then((wasm) => {
- // assign this module to be accessible globally
- window.__dx_mainWasm = wasm;
- window.__dx_mainInit = init;
- window.__dx_mainInitSync = initSync;
- window.__dx___wbg_get_imports = __wbg_get_imports;
-
- if (wasm.__wbindgen_start == undefined) {
- wasm.main();
- }
- });
- }
- );
-
+ &format!(
+ r#"
,
+ text_content: Option<&str>,
+) {
+ let window = web_sys::window().expect("no global `window` exists");
+ let document = window.document().expect("should have a document on window");
+ let head = document.head().expect("document should have a head");
+
+ let element = document.create_element(local_name).unwrap();
+ for (name, value) in attributes {
+ element.set_attribute(name, value).unwrap();
+ }
+ if text_content.is_some() {
+ element.set_text_content(text_content);
+ }
+ head.append_child(&element).unwrap();
+}
+
/// Required to avoid blocking the Rust WASM thread.
const PROMISE_WRAPPER: &str = r#"
return (async function(){