[TS] Escape keywords in typescript object names (#7137)

* Add Object to the list of reserved keywords.
* Properly escape keywords in type names.
* Properly escape keywords in enum names.
* Properly escape keywords in enum field names.

tests/TypeScriptTest.sh

@@ -25,6 +25,7 @@ if [ -x ../flatc ]; then
     ../flatc --gen-object-api -b -I include_test monster_test.fbs unicode_test.json
     ../flatc --ts --gen-name-strings --gen-mutable --gen-object-api -o union_vector union_vector/union_vector.fbs
     ../flatc --ts --gen-name-strings optional_scalars.fbs
+    ../flatc --ts --gen-name-strings --gen-object-api --gen-mutable typescript_keywords.fbs
 fi
 tsc
 node -r esm JavaScriptTest

tests/tsconfig.json

@@ -14,7 +14,9 @@
   },
   "include": [
     "monster_test.ts",
+    "typescript_keywords.ts",
     "my-game/**/*.ts",
+    "typescript/**/*.ts",
     "optional_scalars/**/*.ts",
     "namespace_test/**/*.ts",
     "union_vector/**/*.ts"

tests/typescript_keywords.fbs

@@ -0,0 +1,15 @@
+// This file includes a variety of keywords meant to deliberately interfere
+// with typescript keywords.
+namespace typescript;
+
+enum class: int {
+  new,
+  instanceof,
+}
+
+table Object {
+  return:int;
+  if:int;
+  switch:int;
+  enum:class;
+}