(fix) fix doc for comma separated exports (#1169)

#1168

Author: dummdidumm

packages/svelte2tsx/src/svelte2tsx/nodes/ExportedNames.ts

@@ -290,10 +290,17 @@ export class ExportedNames {
 
     private getDoc(target: ts.BindingName) {
         let doc = undefined;
+        // Traverse `a` one up. If the declaration is part of a declaration list,
+        // the comment is at this point already
+        const variableDeclaration = target?.parent;
         // Traverse `a` up to `export let a`
         const exportExpr = target?.parent?.parent?.parent;
 
-        if (exportExpr) {
+        if (variableDeclaration) {
+            doc = getLastLeadingDoc(variableDeclaration);
+        }
+
+        if (exportExpr && !doc) {
             doc = getLastLeadingDoc(exportExpr);
         }
 

packages/svelte2tsx/test/svelte2tsx/samples/export-doc/expected.tsx

@@ -13,6 +13,14 @@
      */
      let b;
      let c;
+    /**
+     * d
+     */
+     let d;let 
+    /**
+     * e
+     */
+     e;
 ;
 () => (<></>);
 return { props: {
@@ -21,7 +29,13 @@ return { props: {
      */a: a , 
 /**
      * MORE DOCS!
-     */b: b , c: c}, slots: {}, getters: {}, events: {} }}
+     */b: b , c: c , 
+/**
+     * d
+     */d: d , 
+/**
+     * e
+     */e: e}, slots: {}, getters: {}, events: {} }}
 
 export default class Input__SvelteComponent_ extends __sveltets_1_createSvelte2TsxComponent(__sveltets_1_partial(__sveltets_1_with_any_event(render()))) {
 }

packages/svelte2tsx/test/svelte2tsx/samples/export-doc/input.svelte

@@ -11,4 +11,12 @@
      */
     export let b;
     export let c;
+    /**
+     * d
+     */
+    export let d,
+    /**
+     * e
+     */
+     e;
 </script>