Resolve aliases to jsx namespace symbol (microsoft#30160)

Author: weswigham

src/compiler/checker.ts

@@ -18897,7 +18897,7 @@ namespace ts {
                 const namespaceName = getJsxNamespace(location);
                 const resolvedNamespace = resolveName(location, namespaceName, SymbolFlags.Namespace, /*diagnosticMessage*/ undefined, namespaceName, /*isUse*/ false);
                 if (resolvedNamespace) {
-                    const candidate = getSymbol(getExportsOfSymbol(resolveSymbol(resolvedNamespace)), JsxNames.JSX, SymbolFlags.Namespace);
+                    const candidate = resolveSymbol(getSymbol(getExportsOfSymbol(resolveSymbol(resolvedNamespace)), JsxNames.JSX, SymbolFlags.Namespace));
                     if (candidate) {
                         if (links) {
                             links.jsxNamespace = candidate;

tests/baselines/reference/jsxNamespaceReexports.js

@@ -0,0 +1,32 @@
+//// [tests/cases/compiler/jsxNamespaceReexports.tsx] ////
+
+//// [library.ts]
+function createElement(element: string, props: any, ...children: any[]): any {}
+
+namespace JSX {
+  export interface IntrinsicElements {
+    [key: string]: Record<string, any>;
+  }
+}
+
+export { createElement, JSX };
+//// [index.tsx]
+import * as MyLib from "./library";
+
+const content = <my-element/>;
+
+//// [library.js]
+"use strict";
+exports.__esModule = true;
+function createElement(element, props) {
+    var children = [];
+    for (var _i = 2; _i < arguments.length; _i++) {
+        children[_i - 2] = arguments[_i];
+    }
+}
+exports.createElement = createElement;
+//// [index.js]
+"use strict";
+exports.__esModule = true;
+var MyLib = require("./library");
+var content = MyLib.createElement("my-element", null);

tests/baselines/reference/jsxNamespaceReexports.symbols

@@ -0,0 +1,31 @@
+=== tests/cases/compiler/library.ts ===
+function createElement(element: string, props: any, ...children: any[]): any {}
+>createElement : Symbol(createElement, Decl(library.ts, 0, 0))
+>element : Symbol(element, Decl(library.ts, 0, 23))
+>props : Symbol(props, Decl(library.ts, 0, 39))
+>children : Symbol(children, Decl(library.ts, 0, 51))
+
+namespace JSX {
+>JSX : Symbol(JSX, Decl(library.ts, 0, 79))
+
+  export interface IntrinsicElements {
+>IntrinsicElements : Symbol(IntrinsicElements, Decl(library.ts, 2, 15))
+
+    [key: string]: Record<string, any>;
+>key : Symbol(key, Decl(library.ts, 4, 5))
+>Record : Symbol(Record, Decl(lib.es5.d.ts, --, --))
+  }
+}
+
+export { createElement, JSX };
+>createElement : Symbol(createElement, Decl(library.ts, 8, 8))
+>JSX : Symbol(JSX, Decl(library.ts, 8, 23))
+
+=== tests/cases/compiler/index.tsx ===
+import * as MyLib from "./library";
+>MyLib : Symbol(MyLib, Decl(index.tsx, 0, 6))
+
+const content = <my-element/>;
+>content : Symbol(content, Decl(index.tsx, 2, 5))
+>my-element : Symbol(MyLib.JSX.IntrinsicElements, Decl(library.ts, 2, 15))
+

tests/baselines/reference/jsxNamespaceReexports.types

@@ -0,0 +1,27 @@
+=== tests/cases/compiler/library.ts ===
+function createElement(element: string, props: any, ...children: any[]): any {}
+>createElement : (element: string, props: any, ...children: any[]) => any
+>element : string
+>props : any
+>children : any[]
+
+namespace JSX {
+  export interface IntrinsicElements {
+    [key: string]: Record<string, any>;
+>key : string
+  }
+}
+
+export { createElement, JSX };
+>createElement : (element: string, props: any, ...children: any[]) => any
+>JSX : any
+
+=== tests/cases/compiler/index.tsx ===
+import * as MyLib from "./library";
+>MyLib : typeof MyLib
+
+const content = <my-element/>;
+>content : error
+><my-element/> : error
+>my-element : any
+

tests/cases/compiler/jsxNamespaceReexports.tsx

@@ -0,0 +1,18 @@
+
+// @jsx: react
+// @jsxFactory: MyLib.createElement
+// @strict: true
+// @filename: library.ts
+function createElement(element: string, props: any, ...children: any[]): any {}
+
+namespace JSX {
+  export interface IntrinsicElements {
+    [key: string]: Record<string, any>;
+  }
+}
+
+export { createElement, JSX };
+// @filename: index.tsx
+import * as MyLib from "./library";
+
+const content = <my-element/>;