fix: replace incorrect jsdoc typeExpression in AST traversal (#1018)

* fix: replace incorrect jsdoc typeExpression in AST traversal

- the typeExpression of a JSDocTypeTag is truncated due to comment syntax.

* snake_case

---------

Co-authored-by: Rich Harris <[email protected]>

Author: domuk-k

packages/site-kit/src/lib/markdown/renderer.ts

@@ -420,13 +420,13 @@ async function convert_to_ts(js_code: string, indent = '', offset = '') {
 
 			for (const tag of tags) {
 				if (ts.isJSDocTypeTag(tag)) {
-					type = get_type_info(tag.typeExpression);
+					type = get_type_info(get_jsdoc_type_expression_text(tag.getText()));
 				} else if (ts.isJSDocParameterTag(tag)) {
-					params.push(get_type_info(tag.typeExpression!));
+					params.push(get_type_info(tag.typeExpression?.getText()!));
 				} else if (ts.isJSDocReturnTag(tag)) {
-					returns = get_type_info(tag.typeExpression!);
+					returns = get_type_info(tag.typeExpression?.getText()!);
 				} else if (ts.isJSDocSatisfiesTag(tag)) {
-					satisfies = get_type_info(tag.typeExpression!);
+					satisfies = get_type_info(tag.typeExpression?.getText()!);
 				} else {
 					throw new Error('Unhandled tag');
 				}
@@ -546,10 +546,9 @@ async function convert_to_ts(js_code: string, indent = '', offset = '') {
 
 	return transformed === js_code ? undefined : transformed;
 
-	function get_type_info(expression: ts.JSDocTypeExpression) {
-		const type = expression
-			?.getText()!
-			.slice(1, -1) // remove surrounding `{` and `}`
+	function get_type_info(text: string) {
+		const type = text
+			.replace(/^\{|\}$/g, '') // remove surrounding `{` and `}`
 			.replace(/ \* ?/gm, '')
 			.replace(/import\('(.+?)'\)\.(\w+)(?:(<.+>))?/gms, (_, source, name, args = '') => {
 				const existing = imports.get(source);
@@ -564,6 +563,10 @@ async function convert_to_ts(js_code: string, indent = '', offset = '') {
 
 		return type;
 	}
+
+	function get_jsdoc_type_expression_text(text: string): string {
+		return text.replace(/^@type\s*/, '').trim();
+	}
 }
 
 function find_nearest_node_modules(file: string): string | null {