[TS] Make strict compliant and improve typings (#7549)

* [TS] Make strict compliant and improve typings

* clang-format

* Code gen harmonize

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

package.json

@@ -17,6 +17,7 @@
   },
   "scripts": {
     "test": "npm run compile && cd tests/ts && python3 ./TypeScriptTest.py",
+    "lint": "eslint ts",
     "compile": "tsc && tsc -p tsconfig.mjs.json && rollup -c",
     "prepublishOnly": "npm install --only=dev && npm run compile"
   },

src/idl_gen_ts.cpp

@@ -759,10 +759,10 @@ class TsGenerator : public BaseGenerator {
     import.object_name = object_name;
     import.bare_file_path = bare_file_path;
     import.rel_file_path = rel_file_path;
-    import.import_statement =
+    import.import_statement = "import { " + symbols_expression + " } from '" +
-        "import { " + symbols_expression + " } from '" + rel_file_path + ".js';";
+                              rel_file_path + ".js';";
-    import.export_statement =
+    import.export_statement = "export { " + symbols_expression + " } from '." +
-        "export { " + symbols_expression + " } from '." + bare_file_path + ".js';";
+                              bare_file_path + ".js';";
     import.dependency = &dependency;
     import.dependent = &dependent;
 
@@ -903,7 +903,7 @@ class TsGenerator : public BaseGenerator {
         const auto conversion_function = GenUnionConvFuncName(enum_def);
 
         ret = "(() => {\n";
-        ret += "      let temp = " + conversion_function + "(this." +
+        ret += "      const temp = " + conversion_function + "(this." +
                namer_.Method(field_name, "Type") + "(), " +
                field_binded_method + ");\n";
         ret += "      if(temp === null) { return null; }\n";
@@ -916,17 +916,17 @@ class TsGenerator : public BaseGenerator {
         const auto conversion_function = GenUnionListConvFuncName(enum_def);
 
         ret = "(() => {\n";
-        ret += "    let ret = [];\n";
+        ret += "    const ret = [];\n";
         ret += "    for(let targetEnumIndex = 0; targetEnumIndex < this." +
                namer_.Method(field_name, "TypeLength") + "()" +
                "; "
                "++targetEnumIndex) {\n";
-        ret += "      let targetEnum = this." +
+        ret += "      const targetEnum = this." +
                namer_.Method(field_name, "Type") + "(targetEnumIndex);\n";
         ret += "      if(targetEnum === null || " + enum_type +
                "[targetEnum!] === 'NONE') { "
                "continue; }\n\n";
-        ret += "      let temp = " + conversion_function + "(targetEnum, " +
+        ret += "      const temp = " + conversion_function + "(targetEnum, " +
                field_binded_method + ", targetEnumIndex);\n";
         ret += "      if(temp === null) { continue; }\n";
         ret += union_has_string ? "      if(typeof temp === 'string') { "
@@ -1102,11 +1102,13 @@ class TsGenerator : public BaseGenerator {
             switch (vectortype.base_type) {
               case BASE_TYPE_STRUCT: {
                 const auto &sd = *field.value.type.struct_def;
-                field_type += GetTypeName(sd, /*object_api=*/true);
+                const auto field_type_name =
-                ;
+                    GetTypeName(sd, /*object_api=*/true);
+                field_type += field_type_name;
                 field_type += ")[]";
 
-                field_val = GenBBAccess() + ".createObjList(" +
+                field_val = GenBBAccess() + ".createObjList<" + vectortypename +
+                            ", " + field_type_name + ">(" +
                             field_binded_method + ", this." +
                             namer_.Method(field, "Length") + "())";
 
@@ -1128,7 +1130,7 @@ class TsGenerator : public BaseGenerator {
 
               case BASE_TYPE_STRING: {
                 field_type += "string)[]";
-                field_val = GenBBAccess() + ".createScalarList(" +
+                field_val = GenBBAccess() + ".createScalarList<string>(" +
                             field_binded_method + ", this." +
                             namer_.Field(field, "Length") + "())";
                 field_offset_decl =
@@ -1162,9 +1164,9 @@ class TsGenerator : public BaseGenerator {
                   field_type += vectortypename;
                 }
                 field_type += ")[]";
-                field_val = GenBBAccess() + ".createScalarList(" +
+                field_val = GenBBAccess() + ".createScalarList<" +
-                            field_binded_method + ", this." +
+                            vectortypename + ">(" + field_binded_method +
-                            namer_.Method(field, "Length") + "())";
+                            ", this." + namer_.Method(field, "Length") + "())";
 
                 field_offset_decl =
                     AddImport(imports, struct_def, struct_def).name + "." +
@@ -1260,7 +1262,7 @@ class TsGenerator : public BaseGenerator {
     obj_api_class = "\n";
     obj_api_class += "export class ";
     obj_api_class += GetTypeName(struct_def, /*object_api=*/true);
-    obj_api_class += " {\n";
+    obj_api_class += " implements flatbuffers.IGeneratedObject {\n";
     obj_api_class += constructor_func;
     obj_api_class += pack_func_prototype + pack_func_offset_decl +
                      pack_func_create_call + "\n}";
@@ -1298,12 +1300,17 @@ class TsGenerator : public BaseGenerator {
     }
 
     const std::string object_name = GetTypeName(struct_def);
+    const std::string object_api_name = GetTypeName(struct_def, true);
 
     // Emit constructor
     GenDocComment(struct_def.doc_comment, code_ptr);
     code += "export class ";
     code += object_name;
-    code += " {\n";
+    if (parser.opts.generate_object_based_api)
+      code += " implements flatbuffers.IUnpackableObject<" + object_api_name +
+              "> {\n";
+    else
+      code += " {\n";
     code += "  bb: flatbuffers.ByteBuffer|null = null;\n";
     code += "  bb_pos = 0;\n";
 

tests/ts/TypeScriptTest.py

@@ -61,7 +61,7 @@ check_call(["npm", "install", "--silent"])
 
 print("Invoking flatc...")
 flatc(
-    options=["--ts", "--gen-name-strings", "--gen-mutable", "--gen-object-api"],
+    options=["--ts", "--reflect-names", "--gen-name-strings", "--gen-mutable", "--gen-object-api"],
     schema="../monster_test.fbs",
     include="../include_test",
 )
@@ -74,18 +74,18 @@ flatc(
 )
 
 flatc(
-    options=["--ts", "--gen-name-strings", "--gen-mutable", "--gen-object-api"],
+    options=["--ts", "--reflect-names", "--gen-name-strings", "--gen-mutable", "--gen-object-api"],
     schema="../union_vector/union_vector.fbs",
     prefix="union_vector",
 )
 
 flatc(
-    options=["--ts", "--gen-name-strings"],
+    options=["--ts", "--reflect-names", "--gen-name-strings"],
     schema="../optional_scalars.fbs",
 )
 
 flatc(
-    options=["--ts", "--gen-name-strings", "--gen-mutable", "--gen-object-api"],
+    options=["--ts", "--reflect-names", "--gen-name-strings", "--gen-mutable", "--gen-object-api"],
     schema=[
         "typescript_keywords.fbs",
         "test_dir/typescript_include.fbs",
@@ -98,6 +98,7 @@ flatc(
 flatc(
     options=[
         "--ts",
+        "--reflect-names",
         "--gen-name-strings",
         "--gen-mutable",
         "--gen-object-api",

tests/ts/my-game/example/ability.ts

@@ -4,7 +4,7 @@ import * as flatbuffers from 'flatbuffers';
 
 
 
-export class Ability {
+export class Ability implements flatbuffers.IUnpackableObject<AbilityT> {
   bb: flatbuffers.ByteBuffer|null = null;
   bb_pos = 0;
   __init(i:number, bb:flatbuffers.ByteBuffer):Ability {
@@ -61,7 +61,7 @@ unpackTo(_o: AbilityT): void {
 }
 }
 
-export class AbilityT {
+export class AbilityT implements flatbuffers.IGeneratedObject {
 constructor(
   public id: number = 0,
   public distance: number = 0

tests/ts/my-game/example/monster.js

@@ -889,19 +889,19 @@ export class Monster {
     }
     unpack() {
         return new MonsterT((this.pos() !== null ? this.pos().unpack() : null), this.mana(), this.hp(), this.name(), this.bb.createScalarList(this.inventory.bind(this), this.inventoryLength()), this.color(), this.testType(), (() => {
-            let temp = unionToAny(this.testType(), this.test.bind(this));
+            const temp = unionToAny(this.testType(), this.test.bind(this));
             if (temp === null) {
                 return null;
             }
             return temp.unpack();
         })(), this.bb.createObjList(this.test4.bind(this), this.test4Length()), this.bb.createScalarList(this.testarrayofstring.bind(this), this.testarrayofstringLength()), this.bb.createObjList(this.testarrayoftables.bind(this), this.testarrayoftablesLength()), (this.enemy() !== null ? this.enemy().unpack() : null), this.bb.createScalarList(this.testnestedflatbuffer.bind(this), this.testnestedflatbufferLength()), (this.testempty() !== null ? this.testempty().unpack() : null), this.testbool(), this.testhashs32Fnv1(), this.testhashu32Fnv1(), this.testhashs64Fnv1(), this.testhashu64Fnv1(), this.testhashs32Fnv1a(), this.testhashu32Fnv1a(), this.testhashs64Fnv1a(), this.testhashu64Fnv1a(), this.bb.createScalarList(this.testarrayofbools.bind(this), this.testarrayofboolsLength()), this.testf(), this.testf2(), this.testf3(), this.bb.createScalarList(this.testarrayofstring2.bind(this), this.testarrayofstring2Length()), this.bb.createObjList(this.testarrayofsortedstruct.bind(this), this.testarrayofsortedstructLength()), this.bb.createScalarList(this.flex.bind(this), this.flexLength()), this.bb.createObjList(this.test5.bind(this), this.test5Length()), this.bb.createScalarList(this.vectorOfLongs.bind(this), this.vectorOfLongsLength()), this.bb.createScalarList(this.vectorOfDoubles.bind(this), this.vectorOfDoublesLength()), (this.parentNamespaceTest() !== null ? this.parentNamespaceTest().unpack() : null), this.bb.createObjList(this.vectorOfReferrables.bind(this), this.vectorOfReferrablesLength()), this.singleWeakReference(), this.bb.createScalarList(this.vectorOfWeakReferences.bind(this), this.vectorOfWeakReferencesLength()), this.bb.createObjList(this.vectorOfStrongReferrables.bind(this), this.vectorOfStrongReferrablesLength()), this.coOwningReference(), this.bb.createScalarList(this.vectorOfCoOwningReferences.bind(this), this.vectorOfCoOwningReferencesLength()), this.nonOwningReference(), this.bb.createScalarList(this.vectorOfNonOwningReferences.bind(this), this.vectorOfNonOwningReferencesLength()), this.anyUniqueType(), (() => {
-            let temp = unionToAnyUniqueAliases(this.anyUniqueType(), this.anyUnique.bind(this));
+            const temp = unionToAnyUniqueAliases(this.anyUniqueType(), this.anyUnique.bind(this));
             if (temp === null) {
                 return null;
             }
             return temp.unpack();
         })(), this.anyAmbiguousType(), (() => {
-            let temp = unionToAnyAmbiguousAliases(this.anyAmbiguousType(), this.anyAmbiguous.bind(this));
+            const temp = unionToAnyAmbiguousAliases(this.anyAmbiguousType(), this.anyAmbiguous.bind(this));
             if (temp === null) {
                 return null;
             }
@@ -917,7 +917,7 @@ export class Monster {
         _o.color = this.color();
         _o.testType = this.testType();
         _o.test = (() => {
-            let temp = unionToAny(this.testType(), this.test.bind(this));
+            const temp = unionToAny(this.testType(), this.test.bind(this));
             if (temp === null) {
                 return null;
             }
@@ -959,7 +959,7 @@ export class Monster {
         _o.vectorOfNonOwningReferences = this.bb.createScalarList(this.vectorOfNonOwningReferences.bind(this), this.vectorOfNonOwningReferencesLength());
         _o.anyUniqueType = this.anyUniqueType();
         _o.anyUnique = (() => {
-            let temp = unionToAnyUniqueAliases(this.anyUniqueType(), this.anyUnique.bind(this));
+            const temp = unionToAnyUniqueAliases(this.anyUniqueType(), this.anyUnique.bind(this));
             if (temp === null) {
                 return null;
             }
@@ -967,7 +967,7 @@ export class Monster {
         })();
         _o.anyAmbiguousType = this.anyAmbiguousType();
         _o.anyAmbiguous = (() => {
-            let temp = unionToAnyAmbiguousAliases(this.anyAmbiguousType(), this.anyAmbiguous.bind(this));
+            const temp = unionToAnyAmbiguousAliases(this.anyAmbiguousType(), this.anyAmbiguous.bind(this));
             if (temp === null) {
                 return null;
             }

tests/ts/my-game/example/monster.ts

@@ -20,7 +20,7 @@ import { InParentNamespace, InParentNamespaceT } from '../../my-game/in-parent-n
 /**
  * an example documentation comment: "monster object"
  */
-export class Monster {
+export class Monster implements flatbuffers.IUnpackableObject<MonsterT> {
   bb: flatbuffers.ByteBuffer|null = null;
   bb_pos = 0;
   __init(i:number, bb:flatbuffers.ByteBuffer):Monster {
@@ -1153,19 +1153,19 @@ unpack(): MonsterT {
     this.mana(),
     this.hp(),
     this.name(),
-    this.bb!.createScalarList(this.inventory.bind(this), this.inventoryLength()),
+    this.bb!.createScalarList<number>(this.inventory.bind(this), this.inventoryLength()),
     this.color(),
     this.testType(),
     (() => {
-      let temp = unionToAny(this.testType(), this.test.bind(this));
+      const temp = unionToAny(this.testType(), this.test.bind(this));
       if(temp === null) { return null; }
       return temp.unpack()
   })(),
-    this.bb!.createObjList(this.test4.bind(this), this.test4Length()),
+    this.bb!.createObjList<Test, TestT>(this.test4.bind(this), this.test4Length()),
-    this.bb!.createScalarList(this.testarrayofstring.bind(this), this.testarrayofstringLength()),
+    this.bb!.createScalarList<string>(this.testarrayofstring.bind(this), this.testarrayofstringLength()),
-    this.bb!.createObjList(this.testarrayoftables.bind(this), this.testarrayoftablesLength()),
+    this.bb!.createObjList<Monster, MonsterT>(this.testarrayoftables.bind(this), this.testarrayoftablesLength()),
     (this.enemy() !== null ? this.enemy()!.unpack() : null),
-    this.bb!.createScalarList(this.testnestedflatbuffer.bind(this), this.testnestedflatbufferLength()),
+    this.bb!.createScalarList<number>(this.testnestedflatbuffer.bind(this), this.testnestedflatbufferLength()),
     (this.testempty() !== null ? this.testempty()!.unpack() : null),
     this.testbool(),
     this.testhashs32Fnv1(),
@@ -1176,41 +1176,41 @@ unpack(): MonsterT {
     this.testhashu32Fnv1a(),
     this.testhashs64Fnv1a(),
     this.testhashu64Fnv1a(),
-    this.bb!.createScalarList(this.testarrayofbools.bind(this), this.testarrayofboolsLength()),
+    this.bb!.createScalarList<boolean>(this.testarrayofbools.bind(this), this.testarrayofboolsLength()),
     this.testf(),
     this.testf2(),
     this.testf3(),
-    this.bb!.createScalarList(this.testarrayofstring2.bind(this), this.testarrayofstring2Length()),
+    this.bb!.createScalarList<string>(this.testarrayofstring2.bind(this), this.testarrayofstring2Length()),
-    this.bb!.createObjList(this.testarrayofsortedstruct.bind(this), this.testarrayofsortedstructLength()),
+    this.bb!.createObjList<Ability, AbilityT>(this.testarrayofsortedstruct.bind(this), this.testarrayofsortedstructLength()),
-    this.bb!.createScalarList(this.flex.bind(this), this.flexLength()),
+    this.bb!.createScalarList<number>(this.flex.bind(this), this.flexLength()),
-    this.bb!.createObjList(this.test5.bind(this), this.test5Length()),
+    this.bb!.createObjList<Test, TestT>(this.test5.bind(this), this.test5Length()),
-    this.bb!.createScalarList(this.vectorOfLongs.bind(this), this.vectorOfLongsLength()),
+    this.bb!.createScalarList<bigint>(this.vectorOfLongs.bind(this), this.vectorOfLongsLength()),
-    this.bb!.createScalarList(this.vectorOfDoubles.bind(this), this.vectorOfDoublesLength()),
+    this.bb!.createScalarList<number>(this.vectorOfDoubles.bind(this), this.vectorOfDoublesLength()),
     (this.parentNamespaceTest() !== null ? this.parentNamespaceTest()!.unpack() : null),
-    this.bb!.createObjList(this.vectorOfReferrables.bind(this), this.vectorOfReferrablesLength()),
+    this.bb!.createObjList<Referrable, ReferrableT>(this.vectorOfReferrables.bind(this), this.vectorOfReferrablesLength()),
     this.singleWeakReference(),
-    this.bb!.createScalarList(this.vectorOfWeakReferences.bind(this), this.vectorOfWeakReferencesLength()),
+    this.bb!.createScalarList<bigint>(this.vectorOfWeakReferences.bind(this), this.vectorOfWeakReferencesLength()),
-    this.bb!.createObjList(this.vectorOfStrongReferrables.bind(this), this.vectorOfStrongReferrablesLength()),
+    this.bb!.createObjList<Referrable, ReferrableT>(this.vectorOfStrongReferrables.bind(this), this.vectorOfStrongReferrablesLength()),
     this.coOwningReference(),
-    this.bb!.createScalarList(this.vectorOfCoOwningReferences.bind(this), this.vectorOfCoOwningReferencesLength()),
+    this.bb!.createScalarList<bigint>(this.vectorOfCoOwningReferences.bind(this), this.vectorOfCoOwningReferencesLength()),
     this.nonOwningReference(),
-    this.bb!.createScalarList(this.vectorOfNonOwningReferences.bind(this), this.vectorOfNonOwningReferencesLength()),
+    this.bb!.createScalarList<bigint>(this.vectorOfNonOwningReferences.bind(this), this.vectorOfNonOwningReferencesLength()),
     this.anyUniqueType(),
     (() => {
-      let temp = unionToAnyUniqueAliases(this.anyUniqueType(), this.anyUnique.bind(this));
+      const temp = unionToAnyUniqueAliases(this.anyUniqueType(), this.anyUnique.bind(this));
       if(temp === null) { return null; }
       return temp.unpack()
   })(),
     this.anyAmbiguousType(),
     (() => {
-      let temp = unionToAnyAmbiguousAliases(this.anyAmbiguousType(), this.anyAmbiguous.bind(this));
+      const temp = unionToAnyAmbiguousAliases(this.anyAmbiguousType(), this.anyAmbiguous.bind(this));
       if(temp === null) { return null; }
       return temp.unpack()
   })(),
-    this.bb!.createScalarList(this.vectorOfEnums.bind(this), this.vectorOfEnumsLength()),
+    this.bb!.createScalarList<Color>(this.vectorOfEnums.bind(this), this.vectorOfEnumsLength()),
     this.signedEnum(),
-    this.bb!.createScalarList(this.testrequirednestedflatbuffer.bind(this), this.testrequirednestedflatbufferLength()),
+    this.bb!.createScalarList<number>(this.testrequirednestedflatbuffer.bind(this), this.testrequirednestedflatbufferLength()),
-    this.bb!.createObjList(this.scalarKeySortedTables.bind(this), this.scalarKeySortedTablesLength()),
+    this.bb!.createObjList<Stat, StatT>(this.scalarKeySortedTables.bind(this), this.scalarKeySortedTablesLength()),
     (this.nativeInline() !== null ? this.nativeInline()!.unpack() : null),
     this.longEnumNonEnumDefault(),
     this.longEnumNormalDefault()
@@ -1223,19 +1223,19 @@ unpackTo(_o: MonsterT): void {
   _o.mana = this.mana();
   _o.hp = this.hp();
   _o.name = this.name();
-  _o.inventory = this.bb!.createScalarList(this.inventory.bind(this), this.inventoryLength());
+  _o.inventory = this.bb!.createScalarList<number>(this.inventory.bind(this), this.inventoryLength());
   _o.color = this.color();
   _o.testType = this.testType();
   _o.test = (() => {
-      let temp = unionToAny(this.testType(), this.test.bind(this));
+      const temp = unionToAny(this.testType(), this.test.bind(this));
       if(temp === null) { return null; }
       return temp.unpack()
   })();
-  _o.test4 = this.bb!.createObjList(this.test4.bind(this), this.test4Length());
+  _o.test4 = this.bb!.createObjList<Test, TestT>(this.test4.bind(this), this.test4Length());
-  _o.testarrayofstring = this.bb!.createScalarList(this.testarrayofstring.bind(this), this.testarrayofstringLength());
+  _o.testarrayofstring = this.bb!.createScalarList<string>(this.testarrayofstring.bind(this), this.testarrayofstringLength());
-  _o.testarrayoftables = this.bb!.createObjList(this.testarrayoftables.bind(this), this.testarrayoftablesLength());
+  _o.testarrayoftables = this.bb!.createObjList<Monster, MonsterT>(this.testarrayoftables.bind(this), this.testarrayoftablesLength());
   _o.enemy = (this.enemy() !== null ? this.enemy()!.unpack() : null);
-  _o.testnestedflatbuffer = this.bb!.createScalarList(this.testnestedflatbuffer.bind(this), this.testnestedflatbufferLength());
+  _o.testnestedflatbuffer = this.bb!.createScalarList<number>(this.testnestedflatbuffer.bind(this), this.testnestedflatbufferLength());
   _o.testempty = (this.testempty() !== null ? this.testempty()!.unpack() : null);
   _o.testbool = this.testbool();
   _o.testhashs32Fnv1 = this.testhashs32Fnv1();
@@ -1246,48 +1246,48 @@ unpackTo(_o: MonsterT): void {
   _o.testhashu32Fnv1a = this.testhashu32Fnv1a();
   _o.testhashs64Fnv1a = this.testhashs64Fnv1a();
   _o.testhashu64Fnv1a = this.testhashu64Fnv1a();
-  _o.testarrayofbools = this.bb!.createScalarList(this.testarrayofbools.bind(this), this.testarrayofboolsLength());
+  _o.testarrayofbools = this.bb!.createScalarList<boolean>(this.testarrayofbools.bind(this), this.testarrayofboolsLength());
   _o.testf = this.testf();
   _o.testf2 = this.testf2();
   _o.testf3 = this.testf3();
-  _o.testarrayofstring2 = this.bb!.createScalarList(this.testarrayofstring2.bind(this), this.testarrayofstring2Length());
+  _o.testarrayofstring2 = this.bb!.createScalarList<string>(this.testarrayofstring2.bind(this), this.testarrayofstring2Length());
-  _o.testarrayofsortedstruct = this.bb!.createObjList(this.testarrayofsortedstruct.bind(this), this.testarrayofsortedstructLength());
+  _o.testarrayofsortedstruct = this.bb!.createObjList<Ability, AbilityT>(this.testarrayofsortedstruct.bind(this), this.testarrayofsortedstructLength());
-  _o.flex = this.bb!.createScalarList(this.flex.bind(this), this.flexLength());
+  _o.flex = this.bb!.createScalarList<number>(this.flex.bind(this), this.flexLength());
-  _o.test5 = this.bb!.createObjList(this.test5.bind(this), this.test5Length());
+  _o.test5 = this.bb!.createObjList<Test, TestT>(this.test5.bind(this), this.test5Length());
-  _o.vectorOfLongs = this.bb!.createScalarList(this.vectorOfLongs.bind(this), this.vectorOfLongsLength());
+  _o.vectorOfLongs = this.bb!.createScalarList<bigint>(this.vectorOfLongs.bind(this), this.vectorOfLongsLength());
-  _o.vectorOfDoubles = this.bb!.createScalarList(this.vectorOfDoubles.bind(this), this.vectorOfDoublesLength());
+  _o.vectorOfDoubles = this.bb!.createScalarList<number>(this.vectorOfDoubles.bind(this), this.vectorOfDoublesLength());
   _o.parentNamespaceTest = (this.parentNamespaceTest() !== null ? this.parentNamespaceTest()!.unpack() : null);
-  _o.vectorOfReferrables = this.bb!.createObjList(this.vectorOfReferrables.bind(this), this.vectorOfReferrablesLength());
+  _o.vectorOfReferrables = this.bb!.createObjList<Referrable, ReferrableT>(this.vectorOfReferrables.bind(this), this.vectorOfReferrablesLength());
   _o.singleWeakReference = this.singleWeakReference();
-  _o.vectorOfWeakReferences = this.bb!.createScalarList(this.vectorOfWeakReferences.bind(this), this.vectorOfWeakReferencesLength());
+  _o.vectorOfWeakReferences = this.bb!.createScalarList<bigint>(this.vectorOfWeakReferences.bind(this), this.vectorOfWeakReferencesLength());
-  _o.vectorOfStrongReferrables = this.bb!.createObjList(this.vectorOfStrongReferrables.bind(this), this.vectorOfStrongReferrablesLength());
+  _o.vectorOfStrongReferrables = this.bb!.createObjList<Referrable, ReferrableT>(this.vectorOfStrongReferrables.bind(this), this.vectorOfStrongReferrablesLength());
   _o.coOwningReference = this.coOwningReference();
-  _o.vectorOfCoOwningReferences = this.bb!.createScalarList(this.vectorOfCoOwningReferences.bind(this), this.vectorOfCoOwningReferencesLength());
+  _o.vectorOfCoOwningReferences = this.bb!.createScalarList<bigint>(this.vectorOfCoOwningReferences.bind(this), this.vectorOfCoOwningReferencesLength());
   _o.nonOwningReference = this.nonOwningReference();
-  _o.vectorOfNonOwningReferences = this.bb!.createScalarList(this.vectorOfNonOwningReferences.bind(this), this.vectorOfNonOwningReferencesLength());
+  _o.vectorOfNonOwningReferences = this.bb!.createScalarList<bigint>(this.vectorOfNonOwningReferences.bind(this), this.vectorOfNonOwningReferencesLength());
   _o.anyUniqueType = this.anyUniqueType();
   _o.anyUnique = (() => {
-      let temp = unionToAnyUniqueAliases(this.anyUniqueType(), this.anyUnique.bind(this));
+      const temp = unionToAnyUniqueAliases(this.anyUniqueType(), this.anyUnique.bind(this));
       if(temp === null) { return null; }
       return temp.unpack()
   })();
   _o.anyAmbiguousType = this.anyAmbiguousType();
   _o.anyAmbiguous = (() => {
-      let temp = unionToAnyAmbiguousAliases(this.anyAmbiguousType(), this.anyAmbiguous.bind(this));
+      const temp = unionToAnyAmbiguousAliases(this.anyAmbiguousType(), this.anyAmbiguous.bind(this));
       if(temp === null) { return null; }
       return temp.unpack()
   })();
-  _o.vectorOfEnums = this.bb!.createScalarList(this.vectorOfEnums.bind(this), this.vectorOfEnumsLength());
+  _o.vectorOfEnums = this.bb!.createScalarList<Color>(this.vectorOfEnums.bind(this), this.vectorOfEnumsLength());
   _o.signedEnum = this.signedEnum();
-  _o.testrequirednestedflatbuffer = this.bb!.createScalarList(this.testrequirednestedflatbuffer.bind(this), this.testrequirednestedflatbufferLength());
+  _o.testrequirednestedflatbuffer = this.bb!.createScalarList<number>(this.testrequirednestedflatbuffer.bind(this), this.testrequirednestedflatbufferLength());
-  _o.scalarKeySortedTables = this.bb!.createObjList(this.scalarKeySortedTables.bind(this), this.scalarKeySortedTablesLength());
+  _o.scalarKeySortedTables = this.bb!.createObjList<Stat, StatT>(this.scalarKeySortedTables.bind(this), this.scalarKeySortedTablesLength());
   _o.nativeInline = (this.nativeInline() !== null ? this.nativeInline()!.unpack() : null);
   _o.longEnumNonEnumDefault = this.longEnumNonEnumDefault();
   _o.longEnumNormalDefault = this.longEnumNormalDefault();
 }
 }
 
-export class MonsterT {
+export class MonsterT implements flatbuffers.IGeneratedObject {
 constructor(
   public pos: Vec3T|null = null,
   public mana: number = 150,

tests/ts/my-game/example/referrable.ts

@@ -4,7 +4,7 @@ import * as flatbuffers from 'flatbuffers';
 
 
 
-export class Referrable {
+export class Referrable implements flatbuffers.IUnpackableObject<ReferrableT> {
   bb: flatbuffers.ByteBuffer|null = null;
   bb_pos = 0;
   __init(i:number, bb:flatbuffers.ByteBuffer):Referrable {
@@ -81,7 +81,7 @@ unpackTo(_o: ReferrableT): void {
 }
 }
 
-export class ReferrableT {
+export class ReferrableT implements flatbuffers.IGeneratedObject {
 constructor(
   public id: bigint = BigInt('0')
 ){}

tests/ts/my-game/example/stat.ts

@@ -4,7 +4,7 @@ import * as flatbuffers from 'flatbuffers';
 
 
 
-export class Stat {
+export class Stat implements flatbuffers.IUnpackableObject<StatT> {
   bb: flatbuffers.ByteBuffer|null = null;
   bb_pos = 0;
   __init(i:number, bb:flatbuffers.ByteBuffer):Stat {
@@ -118,7 +118,7 @@ unpackTo(_o: StatT): void {
 }
 }
 
-export class StatT {
+export class StatT implements flatbuffers.IGeneratedObject {
 constructor(
   public id: string|Uint8Array|null = null,
   public val: bigint = BigInt('0'),

tests/ts/my-game/example/struct-of-structs-of-structs.ts

@@ -5,7 +5,7 @@ import * as flatbuffers from 'flatbuffers';
 import { StructOfStructs, StructOfStructsT } from '../../my-game/example/struct-of-structs.js';
 
 
-export class StructOfStructsOfStructs {
+export class StructOfStructsOfStructs implements flatbuffers.IUnpackableObject<StructOfStructsOfStructsT> {
   bb: flatbuffers.ByteBuffer|null = null;
   bb_pos = 0;
   __init(i:number, bb:flatbuffers.ByteBuffer):StructOfStructsOfStructs {
@@ -55,7 +55,7 @@ unpackTo(_o: StructOfStructsOfStructsT): void {
 }
 }
 
-export class StructOfStructsOfStructsT {
+export class StructOfStructsOfStructsT implements flatbuffers.IGeneratedObject {
 constructor(
   public a: StructOfStructsT|null = null
 ){}

tests/ts/my-game/example/struct-of-structs.ts

@@ -6,7 +6,7 @@ import { Ability, AbilityT } from '../../my-game/example/ability.js';
 import { Test, TestT } from '../../my-game/example/test.js';
 
 
-export class StructOfStructs {
+export class StructOfStructs implements flatbuffers.IUnpackableObject<StructOfStructsT> {
   bb: flatbuffers.ByteBuffer|null = null;
   bb_pos = 0;
   __init(i:number, bb:flatbuffers.ByteBuffer):StructOfStructs {
@@ -67,7 +67,7 @@ unpackTo(_o: StructOfStructsT): void {
 }
 }
 
-export class StructOfStructsT {
+export class StructOfStructsT implements flatbuffers.IGeneratedObject {
 constructor(
   public a: AbilityT|null = null,
   public b: TestT|null = null,

tests/ts/my-game/example/test-simple-table-with-enum.ts

@@ -5,7 +5,7 @@ import * as flatbuffers from 'flatbuffers';
 import { Color } from '../../my-game/example/color.js';
 
 
-export class TestSimpleTableWithEnum {
+export class TestSimpleTableWithEnum implements flatbuffers.IUnpackableObject<TestSimpleTableWithEnumT> {
   bb: flatbuffers.ByteBuffer|null = null;
   bb_pos = 0;
   __init(i:number, bb:flatbuffers.ByteBuffer):TestSimpleTableWithEnum {
@@ -82,7 +82,7 @@ unpackTo(_o: TestSimpleTableWithEnumT): void {
 }
 }
 
-export class TestSimpleTableWithEnumT {
+export class TestSimpleTableWithEnumT implements flatbuffers.IGeneratedObject {
 constructor(
   public color: Color = Color.Green
 ){}

tests/ts/my-game/example/test.ts

@@ -4,7 +4,7 @@ import * as flatbuffers from 'flatbuffers';
 
 
 
-export class Test {
+export class Test implements flatbuffers.IUnpackableObject<TestT> {
   bb: flatbuffers.ByteBuffer|null = null;
   bb_pos = 0;
   __init(i:number, bb:flatbuffers.ByteBuffer):Test {
@@ -62,7 +62,7 @@ unpackTo(_o: TestT): void {
 }
 }
 
-export class TestT {
+export class TestT implements flatbuffers.IGeneratedObject {
 constructor(
   public a: number = 0,
   public b: number = 0

tests/ts/my-game/example/type-aliases.ts

@@ -4,7 +4,7 @@ import * as flatbuffers from 'flatbuffers';
 
 
 
-export class TypeAliases {
+export class TypeAliases implements flatbuffers.IUnpackableObject<TypeAliasesT> {
   bb: flatbuffers.ByteBuffer|null = null;
   bb_pos = 0;
   __init(i:number, bb:flatbuffers.ByteBuffer):TypeAliases {
@@ -344,8 +344,8 @@ unpack(): TypeAliasesT {
     this.u64(),
     this.f32(),
     this.f64(),
-    this.bb!.createScalarList(this.v8.bind(this), this.v8Length()),
+    this.bb!.createScalarList<number>(this.v8.bind(this), this.v8Length()),
-    this.bb!.createScalarList(this.vf64.bind(this), this.vf64Length())
+    this.bb!.createScalarList<number>(this.vf64.bind(this), this.vf64Length())
   );
 }
 
@@ -361,12 +361,12 @@ unpackTo(_o: TypeAliasesT): void {
   _o.u64 = this.u64();
   _o.f32 = this.f32();
   _o.f64 = this.f64();
-  _o.v8 = this.bb!.createScalarList(this.v8.bind(this), this.v8Length());
+  _o.v8 = this.bb!.createScalarList<number>(this.v8.bind(this), this.v8Length());
-  _o.vf64 = this.bb!.createScalarList(this.vf64.bind(this), this.vf64Length());
+  _o.vf64 = this.bb!.createScalarList<number>(this.vf64.bind(this), this.vf64Length());
 }
 }
 
-export class TypeAliasesT {
+export class TypeAliasesT implements flatbuffers.IGeneratedObject {
 constructor(
   public i8: number = 0,
   public u8: number = 0,

tests/ts/my-game/example/vec3.ts

@@ -6,7 +6,7 @@ import { Color } from '../../my-game/example/color.js';
 import { Test, TestT } from '../../my-game/example/test.js';
 
 
-export class Vec3 {
+export class Vec3 implements flatbuffers.IUnpackableObject<Vec3T> {
   bb: flatbuffers.ByteBuffer|null = null;
   bb_pos = 0;
   __init(i:number, bb:flatbuffers.ByteBuffer):Vec3 {
@@ -112,7 +112,7 @@ unpackTo(_o: Vec3T): void {
 }
 }
 
-export class Vec3T {
+export class Vec3T implements flatbuffers.IGeneratedObject {
 constructor(
   public x: number = 0.0,
   public y: number = 0.0,

tests/ts/my-game/example2/monster.ts

@@ -4,7 +4,7 @@ import * as flatbuffers from 'flatbuffers';
 
 
 
-export class Monster {
+export class Monster implements flatbuffers.IUnpackableObject<MonsterT> {
   bb: flatbuffers.ByteBuffer|null = null;
   bb_pos = 0;
   __init(i:number, bb:flatbuffers.ByteBuffer):Monster {
@@ -56,7 +56,7 @@ unpack(): MonsterT {
 unpackTo(_o: MonsterT): void {}
 }
 
-export class MonsterT {
+export class MonsterT implements flatbuffers.IGeneratedObject {
 constructor(){}
 
 

tests/ts/my-game/in-parent-namespace.ts

@@ -4,7 +4,7 @@ import * as flatbuffers from 'flatbuffers';
 
 
 
-export class InParentNamespace {
+export class InParentNamespace implements flatbuffers.IUnpackableObject<InParentNamespaceT> {
   bb: flatbuffers.ByteBuffer|null = null;
   bb_pos = 0;
   __init(i:number, bb:flatbuffers.ByteBuffer):InParentNamespace {
@@ -56,7 +56,7 @@ unpack(): InParentNamespaceT {
 unpackTo(_o: InParentNamespaceT): void {}
 }
 
-export class InParentNamespaceT {
+export class InParentNamespaceT implements flatbuffers.IGeneratedObject {
 constructor(){}
 
 

tests/ts/reflection/enum-val.ts

@@ -5,7 +5,7 @@ import * as flatbuffers from 'flatbuffers';
 import { Type, TypeT } from '../reflection/type.js';
 
 
-export class EnumVal {
+export class EnumVal implements flatbuffers.IUnpackableObject<EnumValT> {
   bb: flatbuffers.ByteBuffer|null = null;
   bb_pos = 0;
   __init(i:number, bb:flatbuffers.ByteBuffer):EnumVal {
@@ -111,7 +111,7 @@ unpack(): EnumValT {
     this.name(),
     this.value(),
     (this.unionType() !== null ? this.unionType()!.unpack() : null),
-    this.bb!.createScalarList(this.documentation.bind(this), this.documentationLength())
+    this.bb!.createScalarList<string>(this.documentation.bind(this), this.documentationLength())
   );
 }
 
@@ -120,11 +120,11 @@ unpackTo(_o: EnumValT): void {
   _o.name = this.name();
   _o.value = this.value();
   _o.unionType = (this.unionType() !== null ? this.unionType()!.unpack() : null);
-  _o.documentation = this.bb!.createScalarList(this.documentation.bind(this), this.documentationLength());
+  _o.documentation = this.bb!.createScalarList<string>(this.documentation.bind(this), this.documentationLength());
 }
 }
 
-export class EnumValT {
+export class EnumValT implements flatbuffers.IGeneratedObject {
 constructor(
   public name: string|Uint8Array|null = null,
   public value: bigint = BigInt('0'),

tests/ts/reflection/enum.ts

@@ -7,7 +7,7 @@ import { KeyValue, KeyValueT } from '../reflection/key-value.js';
 import { Type, TypeT } from '../reflection/type.js';
 
 
-export class Enum {
+export class Enum implements flatbuffers.IUnpackableObject<EnumT> {
   bb: flatbuffers.ByteBuffer|null = null;
   bb_pos = 0;
   __init(i:number, bb:flatbuffers.ByteBuffer):Enum {
@@ -179,11 +179,11 @@ static endEnum(builder:flatbuffers.Builder):flatbuffers.Offset {
 unpack(): EnumT {
   return new EnumT(
     this.name(),
-    this.bb!.createObjList(this.values.bind(this), this.valuesLength()),
+    this.bb!.createObjList<EnumVal, EnumValT>(this.values.bind(this), this.valuesLength()),
     this.isUnion(),
     (this.underlyingType() !== null ? this.underlyingType()!.unpack() : null),
-    this.bb!.createObjList(this.attributes.bind(this), this.attributesLength()),
+    this.bb!.createObjList<KeyValue, KeyValueT>(this.attributes.bind(this), this.attributesLength()),
-    this.bb!.createScalarList(this.documentation.bind(this), this.documentationLength()),
+    this.bb!.createScalarList<string>(this.documentation.bind(this), this.documentationLength()),
     this.declarationFile()
   );
 }
@@ -191,16 +191,16 @@ unpack(): EnumT {
 
 unpackTo(_o: EnumT): void {
   _o.name = this.name();
-  _o.values = this.bb!.createObjList(this.values.bind(this), this.valuesLength());
+  _o.values = this.bb!.createObjList<EnumVal, EnumValT>(this.values.bind(this), this.valuesLength());
   _o.isUnion = this.isUnion();
   _o.underlyingType = (this.underlyingType() !== null ? this.underlyingType()!.unpack() : null);
-  _o.attributes = this.bb!.createObjList(this.attributes.bind(this), this.attributesLength());
+  _o.attributes = this.bb!.createObjList<KeyValue, KeyValueT>(this.attributes.bind(this), this.attributesLength());
-  _o.documentation = this.bb!.createScalarList(this.documentation.bind(this), this.documentationLength());
+  _o.documentation = this.bb!.createScalarList<string>(this.documentation.bind(this), this.documentationLength());
   _o.declarationFile = this.declarationFile();
 }
 }
 
-export class EnumT {
+export class EnumT implements flatbuffers.IGeneratedObject {
 constructor(
   public name: string|Uint8Array|null = null,
   public values: (EnumValT)[] = [],

tests/ts/reflection/field.ts

@@ -6,7 +6,7 @@ import { KeyValue, KeyValueT } from '../reflection/key-value.js';
 import { Type, TypeT } from '../reflection/type.js';
 
 
-export class Field {
+export class Field implements flatbuffers.IUnpackableObject<FieldT> {
   bb: flatbuffers.ByteBuffer|null = null;
   bb_pos = 0;
   __init(i:number, bb:flatbuffers.ByteBuffer):Field {
@@ -308,8 +308,8 @@ unpack(): FieldT {
     this.deprecated(),
     this.required(),
     this.key(),
-    this.bb!.createObjList(this.attributes.bind(this), this.attributesLength()),
+    this.bb!.createObjList<KeyValue, KeyValueT>(this.attributes.bind(this), this.attributesLength()),
-    this.bb!.createScalarList(this.documentation.bind(this), this.documentationLength()),
+    this.bb!.createScalarList<string>(this.documentation.bind(this), this.documentationLength()),
     this.optional(),
     this.padding()
   );
@@ -326,14 +326,14 @@ unpackTo(_o: FieldT): void {
   _o.deprecated = this.deprecated();
   _o.required = this.required();
   _o.key = this.key();
-  _o.attributes = this.bb!.createObjList(this.attributes.bind(this), this.attributesLength());
+  _o.attributes = this.bb!.createObjList<KeyValue, KeyValueT>(this.attributes.bind(this), this.attributesLength());
-  _o.documentation = this.bb!.createScalarList(this.documentation.bind(this), this.documentationLength());
+  _o.documentation = this.bb!.createScalarList<string>(this.documentation.bind(this), this.documentationLength());
   _o.optional = this.optional();
   _o.padding = this.padding();
 }
 }
 
-export class FieldT {
+export class FieldT implements flatbuffers.IGeneratedObject {
 constructor(
   public name: string|Uint8Array|null = null,
   public type: TypeT|null = null,

tests/ts/reflection/key-value.ts

@@ -4,7 +4,7 @@ import * as flatbuffers from 'flatbuffers';
 
 
 
-export class KeyValue {
+export class KeyValue implements flatbuffers.IUnpackableObject<KeyValueT> {
   bb: flatbuffers.ByteBuffer|null = null;
   bb_pos = 0;
   __init(i:number, bb:flatbuffers.ByteBuffer):KeyValue {
@@ -79,7 +79,7 @@ unpackTo(_o: KeyValueT): void {
 }
 }
 
-export class KeyValueT {
+export class KeyValueT implements flatbuffers.IGeneratedObject {
 constructor(
   public key: string|Uint8Array|null = null,
   public value: string|Uint8Array|null = null

tests/ts/reflection/object.ts

@@ -6,7 +6,7 @@ import { Field, FieldT } from '../reflection/field.js';
 import { KeyValue, KeyValueT } from '../reflection/key-value.js';
 
 
-export class Object_ {
+export class Object_ implements flatbuffers.IUnpackableObject<Object_T> {
   bb: flatbuffers.ByteBuffer|null = null;
   bb_pos = 0;
   __init(i:number, bb:flatbuffers.ByteBuffer):Object_ {
@@ -220,12 +220,12 @@ static createObject(builder:flatbuffers.Builder, nameOffset:flatbuffers.Offset,
 unpack(): Object_T {
   return new Object_T(
     this.name(),
-    this.bb!.createObjList(this.fields.bind(this), this.fieldsLength()),
+    this.bb!.createObjList<Field, FieldT>(this.fields.bind(this), this.fieldsLength()),
     this.isStruct(),
     this.minalign(),
     this.bytesize(),
-    this.bb!.createObjList(this.attributes.bind(this), this.attributesLength()),
+    this.bb!.createObjList<KeyValue, KeyValueT>(this.attributes.bind(this), this.attributesLength()),
-    this.bb!.createScalarList(this.documentation.bind(this), this.documentationLength()),
+    this.bb!.createScalarList<string>(this.documentation.bind(this), this.documentationLength()),
     this.declarationFile()
   );
 }
@@ -233,17 +233,17 @@ unpack(): Object_T {
 
 unpackTo(_o: Object_T): void {
   _o.name = this.name();
-  _o.fields = this.bb!.createObjList(this.fields.bind(this), this.fieldsLength());
+  _o.fields = this.bb!.createObjList<Field, FieldT>(this.fields.bind(this), this.fieldsLength());
   _o.isStruct = this.isStruct();
   _o.minalign = this.minalign();
   _o.bytesize = this.bytesize();
-  _o.attributes = this.bb!.createObjList(this.attributes.bind(this), this.attributesLength());
+  _o.attributes = this.bb!.createObjList<KeyValue, KeyValueT>(this.attributes.bind(this), this.attributesLength());
-  _o.documentation = this.bb!.createScalarList(this.documentation.bind(this), this.documentationLength());
+  _o.documentation = this.bb!.createScalarList<string>(this.documentation.bind(this), this.documentationLength());
   _o.declarationFile = this.declarationFile();
 }
 }
 
-export class Object_T {
+export class Object_T implements flatbuffers.IGeneratedObject {
 constructor(
   public name: string|Uint8Array|null = null,
   public fields: (FieldT)[] = [],

tests/ts/reflection/rpccall.ts

@@ -6,7 +6,7 @@ import { KeyValue, KeyValueT } from '../reflection/key-value.js';
 import { Object_, Object_T } from '../reflection/object.js';
 
 
-export class RPCCall {
+export class RPCCall implements flatbuffers.IUnpackableObject<RPCCallT> {
   bb: flatbuffers.ByteBuffer|null = null;
   bb_pos = 0;
   __init(i:number, bb:flatbuffers.ByteBuffer):RPCCall {
@@ -129,8 +129,8 @@ unpack(): RPCCallT {
     this.name(),
     (this.request() !== null ? this.request()!.unpack() : null),
     (this.response() !== null ? this.response()!.unpack() : null),
-    this.bb!.createObjList(this.attributes.bind(this), this.attributesLength()),
+    this.bb!.createObjList<KeyValue, KeyValueT>(this.attributes.bind(this), this.attributesLength()),
-    this.bb!.createScalarList(this.documentation.bind(this), this.documentationLength())
+    this.bb!.createScalarList<string>(this.documentation.bind(this), this.documentationLength())
   );
 }
 
@@ -139,12 +139,12 @@ unpackTo(_o: RPCCallT): void {
   _o.name = this.name();
   _o.request = (this.request() !== null ? this.request()!.unpack() : null);
   _o.response = (this.response() !== null ? this.response()!.unpack() : null);
-  _o.attributes = this.bb!.createObjList(this.attributes.bind(this), this.attributesLength());
+  _o.attributes = this.bb!.createObjList<KeyValue, KeyValueT>(this.attributes.bind(this), this.attributesLength());
-  _o.documentation = this.bb!.createScalarList(this.documentation.bind(this), this.documentationLength());
+  _o.documentation = this.bb!.createScalarList<string>(this.documentation.bind(this), this.documentationLength());
 }
 }
 
-export class RPCCallT {
+export class RPCCallT implements flatbuffers.IGeneratedObject {
 constructor(
   public name: string|Uint8Array|null = null,
   public request: Object_T|null = null,

tests/ts/reflection/schema-file.ts

@@ -9,7 +9,7 @@ import * as flatbuffers from 'flatbuffers';
  * Symbols declared within a file may be recovered by iterating over all
  * symbols and examining the `declaration_file` field.
  */
-export class SchemaFile {
+export class SchemaFile implements flatbuffers.IUnpackableObject<SchemaFileT> {
   bb: flatbuffers.ByteBuffer|null = null;
   bb_pos = 0;
   __init(i:number, bb:flatbuffers.ByteBuffer):SchemaFile {
@@ -96,18 +96,18 @@ static createSchemaFile(builder:flatbuffers.Builder, filenameOffset:flatbuffers.
 unpack(): SchemaFileT {
   return new SchemaFileT(
     this.filename(),
-    this.bb!.createScalarList(this.includedFilenames.bind(this), this.includedFilenamesLength())
+    this.bb!.createScalarList<string>(this.includedFilenames.bind(this), this.includedFilenamesLength())
   );
 }
 
 
 unpackTo(_o: SchemaFileT): void {
   _o.filename = this.filename();
-  _o.includedFilenames = this.bb!.createScalarList(this.includedFilenames.bind(this), this.includedFilenamesLength());
+  _o.includedFilenames = this.bb!.createScalarList<string>(this.includedFilenames.bind(this), this.includedFilenamesLength());
 }
 }
 
-export class SchemaFileT {
+export class SchemaFileT implements flatbuffers.IGeneratedObject {
 constructor(
   public filename: string|Uint8Array|null = null,
   public includedFilenames: (string)[] = []

tests/ts/reflection/schema.ts

@@ -8,7 +8,7 @@ import { SchemaFile, SchemaFileT } from '../reflection/schema-file.js';
 import { Service, ServiceT } from '../reflection/service.js';
 
 
-export class Schema {
+export class Schema implements flatbuffers.IUnpackableObject<SchemaT> {
   bb: flatbuffers.ByteBuffer|null = null;
   bb_pos = 0;
   __init(i:number, bb:flatbuffers.ByteBuffer):Schema {
@@ -215,31 +215,31 @@ static finishSizePrefixedSchemaBuffer(builder:flatbuffers.Builder, offset:flatbu
 
 unpack(): SchemaT {
   return new SchemaT(
-    this.bb!.createObjList(this.objects.bind(this), this.objectsLength()),
+    this.bb!.createObjList<Object_, Object_T>(this.objects.bind(this), this.objectsLength()),
-    this.bb!.createObjList(this.enums.bind(this), this.enumsLength()),
+    this.bb!.createObjList<Enum, EnumT>(this.enums.bind(this), this.enumsLength()),
     this.fileIdent(),
     this.fileExt(),
     (this.rootTable() !== null ? this.rootTable()!.unpack() : null),
-    this.bb!.createObjList(this.services.bind(this), this.servicesLength()),
+    this.bb!.createObjList<Service, ServiceT>(this.services.bind(this), this.servicesLength()),
     this.advancedFeatures(),
-    this.bb!.createObjList(this.fbsFiles.bind(this), this.fbsFilesLength())
+    this.bb!.createObjList<SchemaFile, SchemaFileT>(this.fbsFiles.bind(this), this.fbsFilesLength())
   );
 }
 
 
 unpackTo(_o: SchemaT): void {
-  _o.objects = this.bb!.createObjList(this.objects.bind(this), this.objectsLength());
+  _o.objects = this.bb!.createObjList<Object_, Object_T>(this.objects.bind(this), this.objectsLength());
-  _o.enums = this.bb!.createObjList(this.enums.bind(this), this.enumsLength());
+  _o.enums = this.bb!.createObjList<Enum, EnumT>(this.enums.bind(this), this.enumsLength());
   _o.fileIdent = this.fileIdent();
   _o.fileExt = this.fileExt();
   _o.rootTable = (this.rootTable() !== null ? this.rootTable()!.unpack() : null);
-  _o.services = this.bb!.createObjList(this.services.bind(this), this.servicesLength());
+  _o.services = this.bb!.createObjList<Service, ServiceT>(this.services.bind(this), this.servicesLength());
   _o.advancedFeatures = this.advancedFeatures();
-  _o.fbsFiles = this.bb!.createObjList(this.fbsFiles.bind(this), this.fbsFilesLength());
+  _o.fbsFiles = this.bb!.createObjList<SchemaFile, SchemaFileT>(this.fbsFiles.bind(this), this.fbsFilesLength());
 }
 }
 
-export class SchemaT {
+export class SchemaT implements flatbuffers.IGeneratedObject {
 constructor(
   public objects: (Object_T)[] = [],
   public enums: (EnumT)[] = [],

tests/ts/reflection/service.ts

@@ -6,7 +6,7 @@ import { KeyValue, KeyValueT } from '../reflection/key-value.js';
 import { RPCCall, RPCCallT } from '../reflection/rpccall.js';
 
 
-export class Service {
+export class Service implements flatbuffers.IUnpackableObject<ServiceT> {
   bb: flatbuffers.ByteBuffer|null = null;
   bb_pos = 0;
   __init(i:number, bb:flatbuffers.ByteBuffer):Service {
@@ -156,9 +156,9 @@ static createService(builder:flatbuffers.Builder, nameOffset:flatbuffers.Offset,
 unpack(): ServiceT {
   return new ServiceT(
     this.name(),
-    this.bb!.createObjList(this.calls.bind(this), this.callsLength()),
+    this.bb!.createObjList<RPCCall, RPCCallT>(this.calls.bind(this), this.callsLength()),
-    this.bb!.createObjList(this.attributes.bind(this), this.attributesLength()),
+    this.bb!.createObjList<KeyValue, KeyValueT>(this.attributes.bind(this), this.attributesLength()),
-    this.bb!.createScalarList(this.documentation.bind(this), this.documentationLength()),
+    this.bb!.createScalarList<string>(this.documentation.bind(this), this.documentationLength()),
     this.declarationFile()
   );
 }
@@ -166,14 +166,14 @@ unpack(): ServiceT {
 
 unpackTo(_o: ServiceT): void {
   _o.name = this.name();
-  _o.calls = this.bb!.createObjList(this.calls.bind(this), this.callsLength());
+  _o.calls = this.bb!.createObjList<RPCCall, RPCCallT>(this.calls.bind(this), this.callsLength());
-  _o.attributes = this.bb!.createObjList(this.attributes.bind(this), this.attributesLength());
+  _o.attributes = this.bb!.createObjList<KeyValue, KeyValueT>(this.attributes.bind(this), this.attributesLength());
-  _o.documentation = this.bb!.createScalarList(this.documentation.bind(this), this.documentationLength());
+  _o.documentation = this.bb!.createScalarList<string>(this.documentation.bind(this), this.documentationLength());
   _o.declarationFile = this.declarationFile();
 }
 }
 
-export class ServiceT {
+export class ServiceT implements flatbuffers.IGeneratedObject {
 constructor(
   public name: string|Uint8Array|null = null,
   public calls: (RPCCallT)[] = [],

tests/ts/reflection/type.ts

@@ -5,7 +5,7 @@ import * as flatbuffers from 'flatbuffers';
 import { BaseType } from '../reflection/base-type.js';
 
 
-export class Type {
+export class Type implements flatbuffers.IUnpackableObject<TypeT> {
   bb: flatbuffers.ByteBuffer|null = null;
   bb_pos = 0;
   __init(i:number, bb:flatbuffers.ByteBuffer):Type {
@@ -195,7 +195,7 @@ unpackTo(_o: TypeT): void {
 }
 }
 
-export class TypeT {
+export class TypeT implements flatbuffers.IGeneratedObject {
 constructor(
   public baseType: BaseType = BaseType.None,
   public element: BaseType = BaseType.None,

tests/ts/reflection_generated.ts

@@ -35,7 +35,7 @@ export enum AdvancedFeatures {
   DefaultVectorsAndStrings = '8'
 }
 
-export class Type {
+export class Type implements flatbuffers.IUnpackableObject<TypeT> {
   bb: flatbuffers.ByteBuffer|null = null;
   bb_pos = 0;
   __init(i:number, bb:flatbuffers.ByteBuffer):Type {
@@ -225,7 +225,7 @@ unpackTo(_o: TypeT): void {
 }
 }
 
-export class TypeT {
+export class TypeT implements flatbuffers.IGeneratedObject {
 constructor(
   public baseType: BaseType = BaseType.None,
   public element: BaseType = BaseType.None,
@@ -248,7 +248,7 @@ pack(builder:flatbuffers.Builder): flatbuffers.Offset {
 }
 }
 
-export class KeyValue {
+export class KeyValue implements flatbuffers.IUnpackableObject<KeyValueT> {
   bb: flatbuffers.ByteBuffer|null = null;
   bb_pos = 0;
   __init(i:number, bb:flatbuffers.ByteBuffer):KeyValue {
@@ -323,7 +323,7 @@ unpackTo(_o: KeyValueT): void {
 }
 }
 
-export class KeyValueT {
+export class KeyValueT implements flatbuffers.IGeneratedObject {
 constructor(
   public key: string|Uint8Array|null = null,
   public value: string|Uint8Array|null = null
@@ -341,7 +341,7 @@ pack(builder:flatbuffers.Builder): flatbuffers.Offset {
 }
 }
 
-export class EnumVal {
+export class EnumVal implements flatbuffers.IUnpackableObject<EnumValT> {
   bb: flatbuffers.ByteBuffer|null = null;
   bb_pos = 0;
   __init(i:number, bb:flatbuffers.ByteBuffer):EnumVal {
@@ -447,7 +447,7 @@ unpack(): EnumValT {
     this.name(),
     this.value(),
     (this.unionType() !== null ? this.unionType()!.unpack() : null),
-    this.bb!.createScalarList(this.documentation.bind(this), this.documentationLength())
+    this.bb!.createScalarList<string>(this.documentation.bind(this), this.documentationLength())
   );
 }
 
@@ -456,11 +456,11 @@ unpackTo(_o: EnumValT): void {
   _o.name = this.name();
   _o.value = this.value();
   _o.unionType = (this.unionType() !== null ? this.unionType()!.unpack() : null);
-  _o.documentation = this.bb!.createScalarList(this.documentation.bind(this), this.documentationLength());
+  _o.documentation = this.bb!.createScalarList<string>(this.documentation.bind(this), this.documentationLength());
 }
 }
 
-export class EnumValT {
+export class EnumValT implements flatbuffers.IGeneratedObject {
 constructor(
   public name: string|Uint8Array|null = null,
   public value: bigint = BigInt('0'),
@@ -484,7 +484,7 @@ pack(builder:flatbuffers.Builder): flatbuffers.Offset {
 }
 }
 
-export class Enum {
+export class Enum implements flatbuffers.IUnpackableObject<EnumT> {
   bb: flatbuffers.ByteBuffer|null = null;
   bb_pos = 0;
   __init(i:number, bb:flatbuffers.ByteBuffer):Enum {
@@ -656,11 +656,11 @@ static endEnum(builder:flatbuffers.Builder):flatbuffers.Offset {
 unpack(): EnumT {
   return new EnumT(
     this.name(),
-    this.bb!.createObjList(this.values.bind(this), this.valuesLength()),
+    this.bb!.createObjList<EnumVal, EnumValT>(this.values.bind(this), this.valuesLength()),
     this.isUnion(),
     (this.underlyingType() !== null ? this.underlyingType()!.unpack() : null),
-    this.bb!.createObjList(this.attributes.bind(this), this.attributesLength()),
+    this.bb!.createObjList<KeyValue, KeyValueT>(this.attributes.bind(this), this.attributesLength()),
-    this.bb!.createScalarList(this.documentation.bind(this), this.documentationLength()),
+    this.bb!.createScalarList<string>(this.documentation.bind(this), this.documentationLength()),
     this.declarationFile()
   );
 }
@@ -668,16 +668,16 @@ unpack(): EnumT {
 
 unpackTo(_o: EnumT): void {
   _o.name = this.name();
-  _o.values = this.bb!.createObjList(this.values.bind(this), this.valuesLength());
+  _o.values = this.bb!.createObjList<EnumVal, EnumValT>(this.values.bind(this), this.valuesLength());
   _o.isUnion = this.isUnion();
   _o.underlyingType = (this.underlyingType() !== null ? this.underlyingType()!.unpack() : null);
-  _o.attributes = this.bb!.createObjList(this.attributes.bind(this), this.attributesLength());
+  _o.attributes = this.bb!.createObjList<KeyValue, KeyValueT>(this.attributes.bind(this), this.attributesLength());
-  _o.documentation = this.bb!.createScalarList(this.documentation.bind(this), this.documentationLength());
+  _o.documentation = this.bb!.createScalarList<string>(this.documentation.bind(this), this.documentationLength());
   _o.declarationFile = this.declarationFile();
 }
 }
 
-export class EnumT {
+export class EnumT implements flatbuffers.IGeneratedObject {
 constructor(
   public name: string|Uint8Array|null = null,
   public values: (EnumValT)[] = [],
@@ -710,7 +710,7 @@ pack(builder:flatbuffers.Builder): flatbuffers.Offset {
 }
 }
 
-export class Field {
+export class Field implements flatbuffers.IUnpackableObject<FieldT> {
   bb: flatbuffers.ByteBuffer|null = null;
   bb_pos = 0;
   __init(i:number, bb:flatbuffers.ByteBuffer):Field {
@@ -1012,8 +1012,8 @@ unpack(): FieldT {
     this.deprecated(),
     this.required(),
     this.key(),
-    this.bb!.createObjList(this.attributes.bind(this), this.attributesLength()),
+    this.bb!.createObjList<KeyValue, KeyValueT>(this.attributes.bind(this), this.attributesLength()),
-    this.bb!.createScalarList(this.documentation.bind(this), this.documentationLength()),
+    this.bb!.createScalarList<string>(this.documentation.bind(this), this.documentationLength()),
     this.optional(),
     this.padding()
   );
@@ -1030,14 +1030,14 @@ unpackTo(_o: FieldT): void {
   _o.deprecated = this.deprecated();
   _o.required = this.required();
   _o.key = this.key();
-  _o.attributes = this.bb!.createObjList(this.attributes.bind(this), this.attributesLength());
+  _o.attributes = this.bb!.createObjList<KeyValue, KeyValueT>(this.attributes.bind(this), this.attributesLength());
-  _o.documentation = this.bb!.createScalarList(this.documentation.bind(this), this.documentationLength());
+  _o.documentation = this.bb!.createScalarList<string>(this.documentation.bind(this), this.documentationLength());
   _o.optional = this.optional();
   _o.padding = this.padding();
 }
 }
 
-export class FieldT {
+export class FieldT implements flatbuffers.IGeneratedObject {
 constructor(
   public name: string|Uint8Array|null = null,
   public type: TypeT|null = null,
@@ -1080,7 +1080,7 @@ pack(builder:flatbuffers.Builder): flatbuffers.Offset {
 }
 }
 
-export class Object_ {
+export class Object_ implements flatbuffers.IUnpackableObject<Object_T> {
   bb: flatbuffers.ByteBuffer|null = null;
   bb_pos = 0;
   __init(i:number, bb:flatbuffers.ByteBuffer):Object_ {
@@ -1294,12 +1294,12 @@ static createObject(builder:flatbuffers.Builder, nameOffset:flatbuffers.Offset,
 unpack(): Object_T {
   return new Object_T(
     this.name(),
-    this.bb!.createObjList(this.fields.bind(this), this.fieldsLength()),
+    this.bb!.createObjList<Field, FieldT>(this.fields.bind(this), this.fieldsLength()),
     this.isStruct(),
     this.minalign(),
     this.bytesize(),
-    this.bb!.createObjList(this.attributes.bind(this), this.attributesLength()),
+    this.bb!.createObjList<KeyValue, KeyValueT>(this.attributes.bind(this), this.attributesLength()),
-    this.bb!.createScalarList(this.documentation.bind(this), this.documentationLength()),
+    this.bb!.createScalarList<string>(this.documentation.bind(this), this.documentationLength()),
     this.declarationFile()
   );
 }
@@ -1307,17 +1307,17 @@ unpack(): Object_T {
 
 unpackTo(_o: Object_T): void {
   _o.name = this.name();
-  _o.fields = this.bb!.createObjList(this.fields.bind(this), this.fieldsLength());
+  _o.fields = this.bb!.createObjList<Field, FieldT>(this.fields.bind(this), this.fieldsLength());
   _o.isStruct = this.isStruct();
   _o.minalign = this.minalign();
   _o.bytesize = this.bytesize();
-  _o.attributes = this.bb!.createObjList(this.attributes.bind(this), this.attributesLength());
+  _o.attributes = this.bb!.createObjList<KeyValue, KeyValueT>(this.attributes.bind(this), this.attributesLength());
-  _o.documentation = this.bb!.createScalarList(this.documentation.bind(this), this.documentationLength());
+  _o.documentation = this.bb!.createScalarList<string>(this.documentation.bind(this), this.documentationLength());
   _o.declarationFile = this.declarationFile();
 }
 }
 
-export class Object_T {
+export class Object_T implements flatbuffers.IGeneratedObject {
 constructor(
   public name: string|Uint8Array|null = null,
   public fields: (FieldT)[] = [],
@@ -1350,7 +1350,7 @@ pack(builder:flatbuffers.Builder): flatbuffers.Offset {
 }
 }
 
-export class RPCCall {
+export class RPCCall implements flatbuffers.IUnpackableObject<RPCCallT> {
   bb: flatbuffers.ByteBuffer|null = null;
   bb_pos = 0;
   __init(i:number, bb:flatbuffers.ByteBuffer):RPCCall {
@@ -1473,8 +1473,8 @@ unpack(): RPCCallT {
     this.name(),
     (this.request() !== null ? this.request()!.unpack() : null),
     (this.response() !== null ? this.response()!.unpack() : null),
-    this.bb!.createObjList(this.attributes.bind(this), this.attributesLength()),
+    this.bb!.createObjList<KeyValue, KeyValueT>(this.attributes.bind(this), this.attributesLength()),
-    this.bb!.createScalarList(this.documentation.bind(this), this.documentationLength())
+    this.bb!.createScalarList<string>(this.documentation.bind(this), this.documentationLength())
   );
 }
 
@@ -1483,12 +1483,12 @@ unpackTo(_o: RPCCallT): void {
   _o.name = this.name();
   _o.request = (this.request() !== null ? this.request()!.unpack() : null);
   _o.response = (this.response() !== null ? this.response()!.unpack() : null);
-  _o.attributes = this.bb!.createObjList(this.attributes.bind(this), this.attributesLength());
+  _o.attributes = this.bb!.createObjList<KeyValue, KeyValueT>(this.attributes.bind(this), this.attributesLength());
-  _o.documentation = this.bb!.createScalarList(this.documentation.bind(this), this.documentationLength());
+  _o.documentation = this.bb!.createScalarList<string>(this.documentation.bind(this), this.documentationLength());
 }
 }
 
-export class RPCCallT {
+export class RPCCallT implements flatbuffers.IGeneratedObject {
 constructor(
   public name: string|Uint8Array|null = null,
   public request: Object_T|null = null,
@@ -1516,7 +1516,7 @@ pack(builder:flatbuffers.Builder): flatbuffers.Offset {
 }
 }
 
-export class Service {
+export class Service implements flatbuffers.IUnpackableObject<ServiceT> {
   bb: flatbuffers.ByteBuffer|null = null;
   bb_pos = 0;
   __init(i:number, bb:flatbuffers.ByteBuffer):Service {
@@ -1666,9 +1666,9 @@ static createService(builder:flatbuffers.Builder, nameOffset:flatbuffers.Offset,
 unpack(): ServiceT {
   return new ServiceT(
     this.name(),
-    this.bb!.createObjList(this.calls.bind(this), this.callsLength()),
+    this.bb!.createObjList<RPCCall, RPCCallT>(this.calls.bind(this), this.callsLength()),
-    this.bb!.createObjList(this.attributes.bind(this), this.attributesLength()),
+    this.bb!.createObjList<KeyValue, KeyValueT>(this.attributes.bind(this), this.attributesLength()),
-    this.bb!.createScalarList(this.documentation.bind(this), this.documentationLength()),
+    this.bb!.createScalarList<string>(this.documentation.bind(this), this.documentationLength()),
     this.declarationFile()
   );
 }
@@ -1676,14 +1676,14 @@ unpack(): ServiceT {
 
 unpackTo(_o: ServiceT): void {
   _o.name = this.name();
-  _o.calls = this.bb!.createObjList(this.calls.bind(this), this.callsLength());
+  _o.calls = this.bb!.createObjList<RPCCall, RPCCallT>(this.calls.bind(this), this.callsLength());
-  _o.attributes = this.bb!.createObjList(this.attributes.bind(this), this.attributesLength());
+  _o.attributes = this.bb!.createObjList<KeyValue, KeyValueT>(this.attributes.bind(this), this.attributesLength());
-  _o.documentation = this.bb!.createScalarList(this.documentation.bind(this), this.documentationLength());
+  _o.documentation = this.bb!.createScalarList<string>(this.documentation.bind(this), this.documentationLength());
   _o.declarationFile = this.declarationFile();
 }
 }
 
-export class ServiceT {
+export class ServiceT implements flatbuffers.IGeneratedObject {
 constructor(
   public name: string|Uint8Array|null = null,
   public calls: (RPCCallT)[] = [],
@@ -1715,7 +1715,7 @@ pack(builder:flatbuffers.Builder): flatbuffers.Offset {
  * Symbols declared within a file may be recovered by iterating over all
  * symbols and examining the `declaration_file` field.
  */
-export class SchemaFile {
+export class SchemaFile implements flatbuffers.IUnpackableObject<SchemaFileT> {
   bb: flatbuffers.ByteBuffer|null = null;
   bb_pos = 0;
   __init(i:number, bb:flatbuffers.ByteBuffer):SchemaFile {
@@ -1802,18 +1802,18 @@ static createSchemaFile(builder:flatbuffers.Builder, filenameOffset:flatbuffers.
 unpack(): SchemaFileT {
   return new SchemaFileT(
     this.filename(),
-    this.bb!.createScalarList(this.includedFilenames.bind(this), this.includedFilenamesLength())
+    this.bb!.createScalarList<string>(this.includedFilenames.bind(this), this.includedFilenamesLength())
   );
 }
 
 
 unpackTo(_o: SchemaFileT): void {
   _o.filename = this.filename();
-  _o.includedFilenames = this.bb!.createScalarList(this.includedFilenames.bind(this), this.includedFilenamesLength());
+  _o.includedFilenames = this.bb!.createScalarList<string>(this.includedFilenames.bind(this), this.includedFilenamesLength());
 }
 }
 
-export class SchemaFileT {
+export class SchemaFileT implements flatbuffers.IGeneratedObject {
 constructor(
   public filename: string|Uint8Array|null = null,
   public includedFilenames: (string)[] = []
@@ -1831,7 +1831,7 @@ pack(builder:flatbuffers.Builder): flatbuffers.Offset {
 }
 }
 
-export class Schema {
+export class Schema implements flatbuffers.IUnpackableObject<SchemaT> {
   bb: flatbuffers.ByteBuffer|null = null;
   bb_pos = 0;
   __init(i:number, bb:flatbuffers.ByteBuffer):Schema {
@@ -2038,31 +2038,31 @@ static finishSizePrefixedSchemaBuffer(builder:flatbuffers.Builder, offset:flatbu
 
 unpack(): SchemaT {
   return new SchemaT(
-    this.bb!.createObjList(this.objects.bind(this), this.objectsLength()),
+    this.bb!.createObjList<Object_, Object_T>(this.objects.bind(this), this.objectsLength()),
-    this.bb!.createObjList(this.enums.bind(this), this.enumsLength()),
+    this.bb!.createObjList<Enum, EnumT>(this.enums.bind(this), this.enumsLength()),
     this.fileIdent(),
     this.fileExt(),
     (this.rootTable() !== null ? this.rootTable()!.unpack() : null),
-    this.bb!.createObjList(this.services.bind(this), this.servicesLength()),
+    this.bb!.createObjList<Service, ServiceT>(this.services.bind(this), this.servicesLength()),
     this.advancedFeatures(),
-    this.bb!.createObjList(this.fbsFiles.bind(this), this.fbsFilesLength())
+    this.bb!.createObjList<SchemaFile, SchemaFileT>(this.fbsFiles.bind(this), this.fbsFilesLength())
   );
 }
 
 
 unpackTo(_o: SchemaT): void {
-  _o.objects = this.bb!.createObjList(this.objects.bind(this), this.objectsLength());
+  _o.objects = this.bb!.createObjList<Object_, Object_T>(this.objects.bind(this), this.objectsLength());
-  _o.enums = this.bb!.createObjList(this.enums.bind(this), this.enumsLength());
+  _o.enums = this.bb!.createObjList<Enum, EnumT>(this.enums.bind(this), this.enumsLength());
   _o.fileIdent = this.fileIdent();
   _o.fileExt = this.fileExt();
   _o.rootTable = (this.rootTable() !== null ? this.rootTable()!.unpack() : null);
-  _o.services = this.bb!.createObjList(this.services.bind(this), this.servicesLength());
+  _o.services = this.bb!.createObjList<Service, ServiceT>(this.services.bind(this), this.servicesLength());
   _o.advancedFeatures = this.advancedFeatures();
-  _o.fbsFiles = this.bb!.createObjList(this.fbsFiles.bind(this), this.fbsFilesLength());
+  _o.fbsFiles = this.bb!.createObjList<SchemaFile, SchemaFileT>(this.fbsFiles.bind(this), this.fbsFilesLength());
 }
 }
 
-export class SchemaT {
+export class SchemaT implements flatbuffers.IGeneratedObject {
 constructor(
   public objects: (Object_T)[] = [],
   public enums: (EnumT)[] = [],

tests/ts/typescript/object.ts

@@ -8,7 +8,7 @@ import { Schema, SchemaT } from '../reflection/schema.js';
 import { class_ } from '../typescript/class.js';
 
 
-export class Object_ {
+export class Object_ implements flatbuffers.IUnpackableObject<Object_T> {
   bb: flatbuffers.ByteBuffer|null = null;
   bb_pos = 0;
   __init(i:number, bb:flatbuffers.ByteBuffer):Object_ {
@@ -193,7 +193,7 @@ unpackTo(_o: Object_T): void {
 }
 }
 
-export class Object_T {
+export class Object_T implements flatbuffers.IGeneratedObject {
 constructor(
   public return_: number = 0,
   public if_: number = 0,

tests/ts/typescript_keywords_generated.ts

@@ -11,7 +11,7 @@ export enum class_ {
   instanceof_ = 1
 }
 
-export class Object_ {
+export class Object_ implements flatbuffers.IUnpackableObject<Object_T> {
   bb: flatbuffers.ByteBuffer|null = null;
   bb_pos = 0;
   __init(i:number, bb:flatbuffers.ByteBuffer):Object_ {
@@ -196,7 +196,7 @@ unpackTo(_o: Object_T): void {
 }
 }
 
-export class Object_T {
+export class Object_T implements flatbuffers.IGeneratedObject {
 constructor(
   public return_: number = 0,
   public if_: number = 0,

tests/ts/union_vector/attacker.ts

@@ -4,7 +4,7 @@ import * as flatbuffers from 'flatbuffers';
 
 
 
-export class Attacker {
+export class Attacker implements flatbuffers.IUnpackableObject<AttackerT> {
   bb: flatbuffers.ByteBuffer|null = null;
   bb_pos = 0;
   __init(i:number, bb:flatbuffers.ByteBuffer):Attacker {
@@ -73,7 +73,7 @@ unpackTo(_o: AttackerT): void {
 }
 }
 
-export class AttackerT {
+export class AttackerT implements flatbuffers.IGeneratedObject {
 constructor(
   public swordAttackDamage: number = 0
 ){}

tests/ts/union_vector/book-reader.ts

@@ -4,7 +4,7 @@ import * as flatbuffers from 'flatbuffers';
 
 
 
-export class BookReader {
+export class BookReader implements flatbuffers.IUnpackableObject<BookReaderT> {
   bb: flatbuffers.ByteBuffer|null = null;
   bb_pos = 0;
   __init(i:number, bb:flatbuffers.ByteBuffer):BookReader {
@@ -49,7 +49,7 @@ unpackTo(_o: BookReaderT): void {
 }
 }
 
-export class BookReaderT {
+export class BookReaderT implements flatbuffers.IGeneratedObject {
 constructor(
   public booksRead: number = 0
 ){}

tests/ts/union_vector/falling-tub.ts

@@ -4,7 +4,7 @@ import * as flatbuffers from 'flatbuffers';
 
 
 
-export class FallingTub {
+export class FallingTub implements flatbuffers.IUnpackableObject<FallingTubT> {
   bb: flatbuffers.ByteBuffer|null = null;
   bb_pos = 0;
   __init(i:number, bb:flatbuffers.ByteBuffer):FallingTub {
@@ -49,7 +49,7 @@ unpackTo(_o: FallingTubT): void {
 }
 }
 
-export class FallingTubT {
+export class FallingTubT implements flatbuffers.IGeneratedObject {
 constructor(
   public weight: number = 0
 ){}

tests/ts/union_vector/hand-fan.ts

@@ -4,7 +4,7 @@ import * as flatbuffers from 'flatbuffers';
 
 
 
-export class HandFan {
+export class HandFan implements flatbuffers.IUnpackableObject<HandFanT> {
   bb: flatbuffers.ByteBuffer|null = null;
   bb_pos = 0;
   __init(i:number, bb:flatbuffers.ByteBuffer):HandFan {
@@ -73,7 +73,7 @@ unpackTo(_o: HandFanT): void {
 }
 }
 
-export class HandFanT {
+export class HandFanT implements flatbuffers.IGeneratedObject {
 constructor(
   public length: number = 0
 ){}

tests/ts/union_vector/movie.js

@@ -107,7 +107,7 @@ export class Movie {
     }
     unpack() {
         return new MovieT(this.mainCharacterType(), (() => {
-            let temp = unionToCharacter(this.mainCharacterType(), this.mainCharacter.bind(this));
+            const temp = unionToCharacter(this.mainCharacterType(), this.mainCharacter.bind(this));
             if (temp === null) {
                 return null;
             }
@@ -116,13 +116,13 @@ export class Movie {
             }
             return temp.unpack();
         })(), this.bb.createScalarList(this.charactersType.bind(this), this.charactersTypeLength()), (() => {
-            let ret = [];
+            const ret = [];
             for (let targetEnumIndex = 0; targetEnumIndex < this.charactersTypeLength(); ++targetEnumIndex) {
-                let targetEnum = this.charactersType(targetEnumIndex);
+                const targetEnum = this.charactersType(targetEnumIndex);
                 if (targetEnum === null || Character[targetEnum] === 'NONE') {
                     continue;
                 }
-                let temp = unionListToCharacter(targetEnum, this.characters.bind(this), targetEnumIndex);
+                const temp = unionListToCharacter(targetEnum, this.characters.bind(this), targetEnumIndex);
                 if (temp === null) {
                     continue;
                 }
@@ -138,7 +138,7 @@ export class Movie {
     unpackTo(_o) {
         _o.mainCharacterType = this.mainCharacterType();
         _o.mainCharacter = (() => {
-            let temp = unionToCharacter(this.mainCharacterType(), this.mainCharacter.bind(this));
+            const temp = unionToCharacter(this.mainCharacterType(), this.mainCharacter.bind(this));
             if (temp === null) {
                 return null;
             }
@@ -149,13 +149,13 @@ export class Movie {
         })();
         _o.charactersType = this.bb.createScalarList(this.charactersType.bind(this), this.charactersTypeLength());
         _o.characters = (() => {
-            let ret = [];
+            const ret = [];
             for (let targetEnumIndex = 0; targetEnumIndex < this.charactersTypeLength(); ++targetEnumIndex) {
-                let targetEnum = this.charactersType(targetEnumIndex);
+                const targetEnum = this.charactersType(targetEnumIndex);
                 if (targetEnum === null || Character[targetEnum] === 'NONE') {
                     continue;
                 }
-                let temp = unionListToCharacter(targetEnum, this.characters.bind(this), targetEnumIndex);
+                const temp = unionListToCharacter(targetEnum, this.characters.bind(this), targetEnumIndex);
                 if (temp === null) {
                     continue;
                 }

tests/ts/union_vector/movie.ts

@@ -8,7 +8,7 @@ import { Character, unionToCharacter, unionListToCharacter } from './character.j
 import { Rapunzel, RapunzelT } from './rapunzel.js';
 
 
-export class Movie {
+export class Movie implements flatbuffers.IUnpackableObject<MovieT> {
   bb: flatbuffers.ByteBuffer|null = null;
   bb_pos = 0;
   __init(i:number, bb:flatbuffers.ByteBuffer):Movie {
@@ -139,19 +139,19 @@ unpack(): MovieT {
   return new MovieT(
     this.mainCharacterType(),
     (() => {
-      let temp = unionToCharacter(this.mainCharacterType(), this.mainCharacter.bind(this));
+      const temp = unionToCharacter(this.mainCharacterType(), this.mainCharacter.bind(this));
       if(temp === null) { return null; }
       if(typeof temp === 'string') { return temp; }
       return temp.unpack()
   })(),
-    this.bb!.createScalarList(this.charactersType.bind(this), this.charactersTypeLength()),
+    this.bb!.createScalarList<Character>(this.charactersType.bind(this), this.charactersTypeLength()),
     (() => {
-    let ret = [];
+    const ret = [];
     for(let targetEnumIndex = 0; targetEnumIndex < this.charactersTypeLength(); ++targetEnumIndex) {
-      let targetEnum = this.charactersType(targetEnumIndex);
+      const targetEnum = this.charactersType(targetEnumIndex);
       if(targetEnum === null || Character[targetEnum!] === 'NONE') { continue; }
 
-      let temp = unionListToCharacter(targetEnum, this.characters.bind(this), targetEnumIndex);
+      const temp = unionListToCharacter(targetEnum, this.characters.bind(this), targetEnumIndex);
       if(temp === null) { continue; }
       if(typeof temp === 'string') { ret.push(temp); continue; }
       ret.push(temp.unpack());
@@ -165,19 +165,19 @@ unpack(): MovieT {
 unpackTo(_o: MovieT): void {
   _o.mainCharacterType = this.mainCharacterType();
   _o.mainCharacter = (() => {
-      let temp = unionToCharacter(this.mainCharacterType(), this.mainCharacter.bind(this));
+      const temp = unionToCharacter(this.mainCharacterType(), this.mainCharacter.bind(this));
       if(temp === null) { return null; }
       if(typeof temp === 'string') { return temp; }
       return temp.unpack()
   })();
-  _o.charactersType = this.bb!.createScalarList(this.charactersType.bind(this), this.charactersTypeLength());
+  _o.charactersType = this.bb!.createScalarList<Character>(this.charactersType.bind(this), this.charactersTypeLength());
   _o.characters = (() => {
-    let ret = [];
+    const ret = [];
     for(let targetEnumIndex = 0; targetEnumIndex < this.charactersTypeLength(); ++targetEnumIndex) {
-      let targetEnum = this.charactersType(targetEnumIndex);
+      const targetEnum = this.charactersType(targetEnumIndex);
       if(targetEnum === null || Character[targetEnum!] === 'NONE') { continue; }
 
-      let temp = unionListToCharacter(targetEnum, this.characters.bind(this), targetEnumIndex);
+      const temp = unionListToCharacter(targetEnum, this.characters.bind(this), targetEnumIndex);
       if(temp === null) { continue; }
       if(typeof temp === 'string') { ret.push(temp); continue; }
       ret.push(temp.unpack());
@@ -187,7 +187,7 @@ unpackTo(_o: MovieT): void {
 }
 }
 
-export class MovieT {
+export class MovieT implements flatbuffers.IGeneratedObject {
 constructor(
   public mainCharacterType: Character = Character.NONE,
   public mainCharacter: AttackerT|BookReaderT|RapunzelT|string|null = null,

tests/ts/union_vector/rapunzel.ts

@@ -4,7 +4,7 @@ import * as flatbuffers from 'flatbuffers';
 
 
 
-export class Rapunzel {
+export class Rapunzel implements flatbuffers.IUnpackableObject<RapunzelT> {
   bb: flatbuffers.ByteBuffer|null = null;
   bb_pos = 0;
   __init(i:number, bb:flatbuffers.ByteBuffer):Rapunzel {
@@ -49,7 +49,7 @@ unpackTo(_o: RapunzelT): void {
 }
 }
 
-export class RapunzelT {
+export class RapunzelT implements flatbuffers.IGeneratedObject {
 constructor(
   public hairLength: number = 0
 ){}

ts/builder.ts

@@ -549,7 +549,7 @@ export class Builder {
      * 
      * @returns offset of obj
      */
-    createObjectOffset(obj: string | any): Offset {
+    createObjectOffset(obj: string | IGeneratedObject | null): Offset {
       if(obj === null) {
         return 0
       }
@@ -566,7 +566,7 @@ export class Builder {
      * 
      * @returns list of offsets of each non null object
      */
-    createObjectOffsetList(list: string[] | any[]): Offset[] {
+    createObjectOffsetList(list: (string | IGeneratedObject)[]): Offset[] {
       const ret: number[] = [];
   
       for(let i = 0; i < list.length; ++i) {
@@ -583,7 +583,7 @@ export class Builder {
       return ret;
     }
   
-    createStructOffsetList(list: string[] | any[], startFunc: (builder: Builder, length: number) => void): Offset {
+    createStructOffsetList(list: (string | IGeneratedObject)[], startFunc: (builder: Builder, length: number) => void): Offset {
       startFunc(this, list.length);
       this.createObjectOffsetList(list.slice().reverse());
       return this.endVector();

ts/byte-buffer.ts

@@ -1,6 +1,6 @@
 import { FILE_IDENTIFIER_LENGTH, SIZEOF_INT } from "./constants.js";
 import { int32, isLittleEndian, float32, float64 } from "./utils.js";
-import { Offset, Table, IGeneratedObject } from "./types.js";
+import { Offset, Table, IGeneratedObject, IUnpackableObject } from "./types.js";
 import { Encoding } from "./encoding.js";
 
 export class ByteBuffer {
@@ -257,14 +257,14 @@ export class ByteBuffer {
     /**
      * A helper function for generating list for obj api
      */
-    createScalarList(listAccessor: (i: number) => unknown, listLength: number): any[] {
+    createScalarList<T>(listAccessor: (i: number) => T | null, listLength: number): T[] {
-      const ret: any[]  = [];
+      const ret: T[]  = [];
       for(let i = 0; i < listLength; ++i) {
-        if(listAccessor(i) !== null) {
+        const val = listAccessor(i);
-          ret.push(listAccessor(i));
+        if(val !== null) {
+          ret.push(val);
         }
       }
-  
       return ret;
     }
 
@@ -274,16 +274,14 @@ export class ByteBuffer {
      * @param listLength listLength
      * @param res result list
      */
-    createObjList(listAccessor: (i: number) => unknown, listLength: number): any[] {
+    createObjList<T1 extends IUnpackableObject<T2>, T2 extends IGeneratedObject>(listAccessor: (i: number) => T1 | null, listLength: number): T2[] {
-      const ret: any[] = [];
+      const ret: T2[] = [];
       for(let i = 0; i < listLength; ++i) {
         const val = listAccessor(i);
         if(val !== null) {
-          ret.push((val as IGeneratedObject).unpack());
+          ret.push(val.unpack());
         }
       }
-      
       return ret;
     }
-  
   }

ts/flatbuffers.ts

@@ -0,0 +1 @@
+export * as flatbuffers from './index.js'

ts/index.ts

@@ -3,7 +3,7 @@ export { SIZEOF_INT } from './constants.js'
 export { FILE_IDENTIFIER_LENGTH } from './constants.js'
 export { SIZE_PREFIX_LENGTH } from './constants.js'
 
-export { Table, Offset } from './types.js'
+export { Table, Offset, IGeneratedObject, IUnpackableObject } from './types.js'
 
 export { int32, float32, float64, isLittleEndian } from './utils.js'
 

ts/types.ts

@@ -10,5 +10,8 @@ export type Table = {
 
 export interface IGeneratedObject {
   pack(builder:Builder): Offset
-  unpack(): IGeneratedObject
+}
+
+export interface IUnpackableObject<T> {
+  unpack(): T
 }