use std::sync::LazyLock;
use rspack_core::{
Compilation, RuntimeGlobals, RuntimeModule, RuntimeModuleGenerateContext, RuntimeTemplate,
impl_runtime_module,
};
use rspack_plugin_runtime::extract_runtime_globals_from_ejs;
use rspack_util::test::is_hot_test;
static HOT_MODULE_REPLACEMENT_TEMPLATE: &str = include_str!("runtime/hot_module_replacement.ejs");
static HOT_MODULE_REPLACEMENT_RUNTIME_REQUIREMENTS: LazyLock<RuntimeGlobals> =
LazyLock::new(|| extract_runtime_globals_from_ejs(HOT_MODULE_REPLACEMENT_TEMPLATE));
#[impl_runtime_module]
#[derive(Debug)]
pub struct HotModuleReplacementRuntimeModule {}
impl HotModuleReplacementRuntimeModule {
pub fn new(runtime_template: &RuntimeTemplate) -> Self {
Self::with_default(runtime_template)
}
}
#[async_trait::async_trait]
impl RuntimeModule for HotModuleReplacementRuntimeModule {
fn template(&self) -> Vec<(String, String)> {
vec![(
self.id.to_string(),
HOT_MODULE_REPLACEMENT_TEMPLATE.to_string(),
)]
}
async fn generate(
&self,
context: &RuntimeModuleGenerateContext<'_>,
) -> rspack_error::Result<String> {
let content = context.runtime_template.render(
self.id.as_str(),
Some(serde_json::json!({
"_is_hot_test": is_hot_test(),
})),
)?;
Ok(content)
}
fn additional_runtime_requirements(&self, _compilation: &Compilation) -> RuntimeGlobals {
*HOT_MODULE_REPLACEMENT_RUNTIME_REQUIREMENTS
}
}