fix: maintain text formatting of "pre" elements in jsx

Closes #398

Author: dsherret

src/generation/generate.rs

@@ -3365,6 +3365,15 @@ fn is_jsx_paren_expr_handled_node(node: &Node, context: &Context) -> bool {
 
 fn gen_jsx_element<'a>(node: &'a JSXElement, context: &mut Context<'a>) -> PrintItems {
   let items = if let Some(closing) = node.closing {
+    // pre element bodies should be formatted as-is
+    if node.opening.name.text_fast(context.program) == "pre" {
+      let mut items = gen_node(node.opening.into(), context);
+      let in_between_range = SourceRange::new(node.opening.end(), closing.start());
+      items.extend(ir_helpers::gen_from_raw_string_trim_line_ends(in_between_range.text_fast(context.program)));
+      items.extend(gen_node(closing.into(), context));
+      return items;
+    }
+
     let result = gen_jsx_with_opening_and_closing(
       GenJsxWithOpeningAndClosingOptions {
         opening_element: node.opening.into(),

tests/specs/jsx/JsxText/JsxText_All.txt

@@ -42,3 +42,31 @@ const t = <>
     Here is some text that will exceed the line
     width, but will be wrapped because of it.
 </>;
+
+== should maintain text for pre element ==
+const t = <pre>
+    &lt;p&gt;
+        &lt;span&gt;This is some text.&lt;/span&gt;
+    &lt;/p&gt;
+</pre>;
+
+[expect]
+const t = <pre>
+    &lt;p&gt;
+        &lt;span&gt;This is some text.&lt;/span&gt;
+    &lt;/p&gt;
+</pre>;
+
+== should maintain pre element text when has nested element as well ==
+const t = <pre>
+  <code className="language-html">
+    &lt;p&gt; &lt;span&gt;This is some text.&lt;/span&gt; &lt;/p&gt;
+            </code>
+</pre>;
+
+[expect]
+const t = <pre>
+  <code className="language-html">
+    &lt;p&gt; &lt;span&gt;This is some text.&lt;/span&gt; &lt;/p&gt;
+            </code>
+</pre>;