feat(plugin): Allow taking the inner data from versioned (#5071)

crates/swc_common/src/plugin.rs

@@ -4,7 +4,7 @@
 //! `swc_common`.
 #![allow(unused)]
 
-use std::any::type_name;
+use std::{any::type_name, mem};
 
 use anyhow::Error;
 use bytecheck::CheckBytes;
@@ -174,4 +174,27 @@ impl Serialized {
 #[derive(Archive, Deserialize, Serialize)]
 #[repr(transparent)]
 #[archive_attr(repr(transparent), derive(CheckBytes))]
-pub struct VersionedSerializable<T>(#[with(AsBox)] pub (u32, T));
+pub struct VersionedSerializable<T>(#[with(AsBox)] (u32, T));
+
+impl<T> VersionedSerializable<T> {
+    pub fn new(value: T) -> Self {
+        // TODO: we'll add compile time flag to augment schema version.
+        // User should not try to set version by themselves.
+        VersionedSerializable((1, value))
+    }
+
+    pub fn version(&self) -> u32 {
+        self.0 .0
+    }
+
+    pub fn inner(&self) -> &T {
+        &self.0 .1
+    }
+
+    pub fn take(&mut self) -> T
+    where
+        T: Default,
+    {
+        mem::take(&mut self.0 .1)
+    }
+}

crates/swc_ecma_ast/src/module.rs

@@ -14,6 +14,12 @@ pub enum Program {
     Script(Script),
 }
 
+impl Default for Program {
+    fn default() -> Self {
+        Program::Module(Module::dummy())
+    }
+}
+
 #[ast_node("Module")]
 #[derive(Eq, Hash, EqIgnoreSpan)]
 pub struct Module {