Optimize wasm bindgen asset with manganis (#3531)

packages/manganis/manganis/src/macro_helpers.rs

@@ -4,11 +4,45 @@ use manganis_core::{AssetOptions, BundledAsset};
 
 use crate::hash::ConstHasher;
 
+/// Create a bundled asset from the input path, the content hash, and the asset options
+pub const fn create_bundled_asset(
+    input_path: &str,
+    content_hash: &[u8],
+    asset_config: AssetOptions,
+) -> BundledAsset {
+    let hashed_path = generate_unique_path_with_byte_hash(input_path, content_hash, &asset_config);
+    BundledAsset::new_from_const(ConstStr::new(input_path), hashed_path, asset_config)
+}
+
+/// Create a bundled asset from the input path, the content hash, and the asset options with a relative asset deprecation warning
+///
+/// This method is deprecated and will be removed in a future release.
+#[deprecated(
+    note = "Relative asset!() paths are not supported. Use a path like `/assets/myfile.png` instead of `./assets/myfile.png`"
+)]
+pub const fn create_bundled_asset_relative(
+    input_path: &str,
+    content_hash: &[u8],
+    asset_config: AssetOptions,
+) -> BundledAsset {
+    create_bundled_asset(input_path, content_hash, asset_config)
+}
+
 /// Format the input path with a hash to create an unique output path for the macro in the form `{input_path}-{hash}.{extension}`
 pub const fn generate_unique_path(
     input_path: &str,
     content_hash: u64,
     asset_config: &AssetOptions,
+) -> ConstStr {
+    let byte_hash = content_hash.to_le_bytes();
+    generate_unique_path_with_byte_hash(input_path, &byte_hash, asset_config)
+}
+
+/// Format the input path with a hash to create an unique output path for the macro in the form `{input_path}-{hash}.{extension}`
+const fn generate_unique_path_with_byte_hash(
+    input_path: &str,
+    content_hash: &[u8],
+    asset_config: &AssetOptions,
 ) -> ConstStr {
     // Format the unique path with the format `{input_path}-{hash}.{extension}`
     // Start with the input path
@@ -43,7 +77,7 @@ pub const fn generate_unique_path(
     // Hash the contents along with the asset config to create a unique hash for the asset
     // When this hash changes, the client needs to re-fetch the asset
     let mut hasher = ConstHasher::new();
-    hasher = hasher.write(&content_hash.to_le_bytes());
+    hasher = hasher.write(content_hash);
     hasher = hasher.hash_by_bytes(asset_config);
     let hash = hasher.finish();