Add missing ts files to BUILD.gn

BUILD.gn

@@ -190,6 +190,8 @@ run_node("gen_declarations") {
     "js/compiler.ts",
     "js/console.ts",
     "js/deno.ts",
+    "js/errors.ts",
+    "js/fbs_util.ts",
     "js/fetch.ts",
     "js/global-eval.ts",
     "js/globals.ts",
@@ -224,6 +226,8 @@ run_node("bundle") {
     "js/assets.ts",
     "js/compiler.ts",
     "js/console.ts",
+    "js/errors.ts",
+    "js/fbs_util.ts",
     "js/fetch.ts",
     "js/fetch_types.d.ts",
     "js/globals.ts",