feat: add support for ICU (#54)

* feat: add support for ICU

* include data

Author: Valerioageno

Cargo.toml

@@ -14,6 +14,7 @@ license-file = "./LICENSE_MIT"
 autoexamples = false
 include = [
     "src/*.rs",
+    "src/icudtl.dat",
     "Cargo.toml",
 ]
 

src/icu.rs

@@ -0,0 +1,9 @@
+// This setup is cloned from
+// https://github.com/denoland/deno_core_icudata/tree/main
+#[repr(C, align(16))]
+struct IcuData<T: ?Sized>(T);
+
+static ICU_DATA_RAW: &IcuData<[u8]> = &IcuData(*include_bytes!("icudtl.dat"));
+
+/// Raw ICU data.
+pub static ICU_DATA: &[u8] = &ICU_DATA_RAW.0;

src/icudtl.dat

@@ -143,6 +143,7 @@
 //!        .body(result)
 //! }
 //!```
+mod icu;
 mod ssr;
 
 pub use ssr::{Ssr, SsrError};

src/lib.rs

@@ -52,6 +52,8 @@ where
         let platform = v8::new_default_platform(0, false).make_shared();
         v8::V8::initialize_platform(platform);
         v8::V8::initialize();
+
+        v8::icu::set_common_data_74(crate::icu::ICU_DATA).expect("Failed to set ICU data");
     }
 
     /// It creates a new SSR instance (multiple instances are allowed).

src/ssr.rs

@@ -0,0 +1,27 @@
+use ssr_rs::Ssr;
+use std::sync::Once;
+
+static INIT: Once = Once::new();
+
+fn prepare() {
+    INIT.call_once(|| {
+        Ssr::create_platform();
+    })
+}
+
+#[test]
+fn it_supports_intl_namespace() {
+    prepare();
+    let mut js = Ssr::from(
+        r##"var ENTRY = {x: () => {
+            return Intl.DateTimeFormat().resolvedOptions().locale;
+            }};"##
+            .to_string(),
+        "ENTRY",
+    )
+    .unwrap();
+
+    let html = js.render_to_string(None).unwrap();
+
+    assert_eq!(html, "en-US");
+}