[TS/JS] Move TS tests to dedicated folder and deps upgrade (#7508)

* Move TS tests to dedicated folder and deps upgrade

* Attempt to fix generate_code

* Fix dir on CI

* Add js extension

* Fix missing extension

* Harmonize with test gen

* Unexplained code gen change

* Restore yarn.lock

* Naive attempt to fix bazel stuff

* Pin @bazel/typescript to 5.2.0

* Attempt to fix bazel

* More tweak

* Upgrade deps

* Tweak?

* Fix path

* Fix test package

Co-authored-by: Derek Bailey <derekbailey@google.com>

tests/ts/my-game/example/any-ambiguous-aliases.ts

@@ -0,0 +1,38 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import { Monster, MonsterT } from '../../my-game/example/monster.js';
+
+
+export enum AnyAmbiguousAliases {
+  NONE = 0,
+  M1 = 1,
+  M2 = 2,
+  M3 = 3
+}
+
+export function unionToAnyAmbiguousAliases(
+  type: AnyAmbiguousAliases,
+  accessor: (obj:Monster) => Monster|null
+): Monster|null {
+  switch(AnyAmbiguousAliases[type]) {
+    case 'NONE': return null; 
+    case 'M1': return accessor(new Monster())! as Monster;
+    case 'M2': return accessor(new Monster())! as Monster;
+    case 'M3': return accessor(new Monster())! as Monster;
+    default: return null;
+  }
+}
+
+export function unionListToAnyAmbiguousAliases(
+  type: AnyAmbiguousAliases, 
+  accessor: (index: number, obj:Monster) => Monster|null, 
+  index: number
+): Monster|null {
+  switch(AnyAmbiguousAliases[type]) {
+    case 'NONE': return null; 
+    case 'M1': return accessor(index, new Monster())! as Monster;
+    case 'M2': return accessor(index, new Monster())! as Monster;
+    case 'M3': return accessor(index, new Monster())! as Monster;
+    default: return null;
+  }
+}