Fix crash on aliased,exported @enum tag in jsdoc

THe code to bind `@enum` and `@typedef` didn't handle the case that the
`@enum` was on a property assignment to an alias of module.exports.
Specifically, `x` needs to be correctly aliased to the file's symbol in
the example below:

```
var x = module.exports = {};
/** @enum {string} */
x.E = {
  A: "A"
};
```

src/compiler/binder.ts

@@ -2113,7 +2113,9 @@ namespace ts {
                                 container = (declName.parent.expression as PropertyAccessExpression).name;
                                 break;
                             case AssignmentDeclarationKind.Property:
-                                container = isPropertyAccessExpression(declName.parent.expression) ? declName.parent.expression.name : declName.parent.expression;
+                                container = isExportsOrModuleExportsOrAlias(file, declName.parent.expression) ? file
+                                    : isPropertyAccessExpression(declName.parent.expression) ? declName.parent.expression.name
+                                    : declName.parent.expression;
                                 break;
                             case AssignmentDeclarationKind.None:
                                 return Debug.fail("Shouldn't have detected typedef or enum on non-assignment declaration");

tests/baselines/reference/exportedAliasedEnumTag.symbols

@@ -0,0 +1,18 @@
+=== tests/cases/conformance/jsdoc/exportedAliasedEnumTag.js ===
+var middlewarify = module.exports = {};
+>middlewarify : Symbol(middlewarify, Decl(exportedAliasedEnumTag.js, 0, 3))
+>module.exports : Symbol("tests/cases/conformance/jsdoc/exportedAliasedEnumTag", Decl(exportedAliasedEnumTag.js, 0, 0))
+>module : Symbol(module, Decl(exportedAliasedEnumTag.js, 0, 18))
+>exports : Symbol("tests/cases/conformance/jsdoc/exportedAliasedEnumTag", Decl(exportedAliasedEnumTag.js, 0, 0))
+
+/** @enum */
+middlewarify.Type = {
+>middlewarify.Type : Symbol(Type, Decl(exportedAliasedEnumTag.js, 0, 39), Decl(exportedAliasedEnumTag.js, 3, 13), Decl(exportedAliasedEnumTag.js, 2, 4))
+>middlewarify : Symbol(middlewarify, Decl(exportedAliasedEnumTag.js, 0, 3))
+>Type : Symbol(Type, Decl(exportedAliasedEnumTag.js, 0, 39), Decl(exportedAliasedEnumTag.js, 3, 13), Decl(exportedAliasedEnumTag.js, 2, 4))
+
+  BEFORE: 'before'
+>BEFORE : Symbol(BEFORE, Decl(exportedAliasedEnumTag.js, 3, 21))
+
+};
+

tests/baselines/reference/exportedAliasedEnumTag.types

@@ -0,0 +1,23 @@
+=== tests/cases/conformance/jsdoc/exportedAliasedEnumTag.js ===
+var middlewarify = module.exports = {};
+>middlewarify : typeof import("tests/cases/conformance/jsdoc/exportedAliasedEnumTag")
+>module.exports = {} : typeof import("tests/cases/conformance/jsdoc/exportedAliasedEnumTag")
+>module.exports : typeof import("tests/cases/conformance/jsdoc/exportedAliasedEnumTag")
+>module : { "\"tests/cases/conformance/jsdoc/exportedAliasedEnumTag\"": typeof import("tests/cases/conformance/jsdoc/exportedAliasedEnumTag"); }
+>exports : typeof import("tests/cases/conformance/jsdoc/exportedAliasedEnumTag")
+>{} : {}
+
+/** @enum */
+middlewarify.Type = {
+>middlewarify.Type = {  BEFORE: 'before'} : { BEFORE: string; }
+>middlewarify.Type : { BEFORE: string; }
+>middlewarify : typeof import("tests/cases/conformance/jsdoc/exportedAliasedEnumTag")
+>Type : { BEFORE: string; }
+>{  BEFORE: 'before'} : { BEFORE: string; }
+
+  BEFORE: 'before'
+>BEFORE : string
+>'before' : "before"
+
+};
+

tests/cases/conformance/jsdoc/exportedAliasedEnumTag.ts

@@ -0,0 +1,9 @@
+// @noemit: true
+// @allowjs: true
+// @filename: exportedAliasedEnumTag.js
+var middlewarify = module.exports = {};
+
+/** @enum */
+middlewarify.Type = {
+  BEFORE: 'before'
+};