chore: update docs

crates/swc_ecma_transforms_typescript/src/transform.rs

@@ -578,10 +578,8 @@ impl Transform {
 }
 
 /// Note:
-/// Const exported declarations are transformed into immutable bindings.
-/// `export` from `export let` / ` export var` will be stripped,
-/// and a mutable binding will be transformed into assignment to the
-/// namespace. All references to the mutable binding will be replaced with
+/// All exported variable declarations are transformed into assignment to the
+/// namespace. All references to the exported binding will be replaced with
 /// qualified access to the namespace property.
 ///
 /// Exported function and class will be treat as const exported which is in
@@ -592,7 +590,7 @@ impl Transform {
 ///
 /// Input:
 /// ```TypeScript
-/// export const foo = init, { bar: baz } = init;
+/// export const foo = init, { bar: baz = init } = init;
 ///
 /// export function a() {}
 ///
@@ -601,7 +599,7 @@ impl Transform {
 ///
 /// Output:
 /// ```TypeScript
-/// const foo = NS.foo = init, { bar: baz } = { bar: NS.baz } = init;
+/// NS.foo = init, { bar: NS.baz = init } = init;
 ///
 /// function a() {}
 /// NS.a = a;