[TS] Add Obj API (#5788)

* added basic code

* backup work

* got class property to work

* backup progress

* implementented fmt for creating code

* added docs for genFieldUtils

* back up work

* added base helper js func

* added union js code

* added unpackTo and base for pack

* added pack code

* added null check for packing struct list

* passes compile test

* fixed some spacing of generated functions

* added annotations for constructors

* added obj api unpack test

* tested pack to work

* merge branch

* separated js and ts test

* fixed union signature to include string

* fixed generator to support string union

* hardcoded fb builder name

* refactored struct vector creation

* work around createLong

* handle default value in constructor

* update typescript docs

* added notes about import flag

* fixed formatting stuffs

* undo TypescriptTest change

* refactored fmt

* updated generated code

* remove ignoring union_vector for js

* revert changes for .project

* revert changes for package.json

* don't generate js in ts test

* fixed android project file

* removed unused js function

* removed package-lock.json

* adjust createObjList to new signature

* changed regex to callback style

* fixed package.json

* used existing func for generating annotation

* changed ternary to !!

* added return type for lambda

* removed callback style for obj api generator

* fixed js file indentation

* removed unused header

* added tests for string only union

* handle string only union and refactor union conv func

* updated generated ts files

* renamed union conv func

* made js test create files like other languages

* removed union string only handling

* don't allow null in createObjectOffsetList

* updated generated ts code

* changed the line that triggers Windows build errors

* hopefully fix CI error

tests/JavaScriptUnionVectorTest.js

@@ -3,38 +3,16 @@ var assert = require('assert');
 var flatbuffers = require('../js/flatbuffers').flatbuffers;
 var Test = require(process.argv[2]);
 
-function main() {
-  var fbb = new flatbuffers.Builder();
+var isTsTest = !!process.env.FB_TS_TEST; 
 
-  var charTypes = [
-    Test.Character.Belle,
-    Test.Character.MuLan,
-    Test.Character.BookFan,
-  ];
-
-  Test.Attacker.startAttacker(fbb);
-  Test.Attacker.addSwordAttackDamage(fbb, 5);
-  var attackerOffset = Test.Attacker.endAttacker(fbb);
-
-  var charTypesOffset = Test.Movie.createCharactersTypeVector(fbb, charTypes);
-  var charsOffset = Test.Movie.createCharactersVector(
-    fbb,
-    [
-      Test.BookReader.createBookReader(fbb, 7),
-      attackerOffset,
-      Test.BookReader.createBookReader(fbb, 2),
-    ]
-  );
-
-  Test.Movie.startMovie(fbb);
-  Test.Movie.addCharactersType(fbb, charTypesOffset);
-  Test.Movie.addCharacters(fbb, charsOffset);
-  Test.Movie.finishMovieBuffer(fbb, Test.Movie.endMovie(fbb));
-
-  var buf = new flatbuffers.ByteBuffer(fbb.asUint8Array());
-
-  var movie = Test.Movie.getRootAsMovie(buf);
+var charTypes = [
+  Test.Character.Belle,
+  Test.Character.MuLan,
+  Test.Character.BookFan,
+];
+if(isTsTest) { charTypes.push(Test.Character.Other); }
 
+function testMovieBuf(movie) {
   assert.strictEqual(movie.charactersTypeLength(), charTypes.length);
   assert.strictEqual(movie.charactersLength(), movie.charactersTypeLength());
 
@@ -51,6 +29,98 @@ function main() {
   var bookReader2 = movie.characters(2, new Test.BookReader());
   assert.strictEqual(bookReader2.booksRead(), 2);
 
+  if(isTsTest) {
+    var other = movie.characters(3, '');
+    assert.strictEqual(other, "I am other");
+  }
+}
+
+function testMovieUnpack(movie) {
+  assert.strictEqual(movie.charactersType.length, charTypes.length);
+  assert.strictEqual(movie.characters.length, movie.charactersType.length);
+
+  for (var i = 0; i < charTypes.length; ++i) {
+    assert.strictEqual(movie.charactersType[i], charTypes[i]);
+  }
+
+  var bookReader7 = movie.characters[0];
+  assert.strictEqual(bookReader7 instanceof Test.BookReaderT, true);
+  assert.strictEqual(bookReader7.booksRead, 7);
+  
+  var attacker = movie.characters[1];
+  assert.strictEqual(attacker instanceof Test.AttackerT, true);
+  assert.strictEqual(attacker.swordAttackDamage, 5);
+  
+  var bookReader2 = movie.characters[2];
+  assert.strictEqual(bookReader2 instanceof Test.BookReaderT, true);
+  assert.strictEqual(bookReader2.booksRead, 2);
+
+  if(isTsTest) {
+    var other = movie.characters[3];
+    assert.strictEqual(other, "I am other");
+  }
+}
+
+function createMovie(fbb) {
+  Test.Attacker.startAttacker(fbb);
+  Test.Attacker.addSwordAttackDamage(fbb, 5);
+  var attackerOffset = Test.Attacker.endAttacker(fbb);
+
+  var charTypesOffset = Test.Movie.createCharactersTypeVector(fbb, charTypes);
+  var charsOffset = 0;
+
+  if(isTsTest) {
+    let otherOffset = fbb.createString("I am other");
+
+    charsOffset = Test.Movie.createCharactersVector(
+      fbb,
+      [
+        Test.BookReader.createBookReader(fbb, 7),
+        attackerOffset,
+        Test.BookReader.createBookReader(fbb, 2),
+        otherOffset
+      ]
+    );
+  } else {
+    charsOffset = Test.Movie.createCharactersVector(
+      fbb,
+      [
+        Test.BookReader.createBookReader(fbb, 7),
+        attackerOffset,
+        Test.BookReader.createBookReader(fbb, 2)
+      ]
+    );
+  }
+
+  Test.Movie.startMovie(fbb);
+  Test.Movie.addCharactersType(fbb, charTypesOffset);
+  Test.Movie.addCharacters(fbb, charsOffset);
+  Test.Movie.finishMovieBuffer(fbb, Test.Movie.endMovie(fbb))
+}
+
+function main() {
+  var fbb = new flatbuffers.Builder();
+
+  createMovie(fbb);
+
+  var buf = new flatbuffers.ByteBuffer(fbb.asUint8Array());
+
+  var movie = Test.Movie.getRootAsMovie(buf);
+  testMovieBuf(movie);
+
+  if(isTsTest) {
+    testMovieUnpack(movie.unpack());
+
+    var movie_to = new Test.MovieT();
+    movie.unpackTo(movie_to);
+    testMovieUnpack(movie_to);
+
+    fbb.clear();
+    Test.Movie.finishMovieBuffer(fbb, movie_to.pack(fbb));
+    var unpackBuf = new flatbuffers.ByteBuffer(fbb.asUint8Array());
+    testMovieBuf(Test.Movie.getRootAsMovie(unpackBuf));
+  }
+
   console.log('FlatBuffers union vector test: completed successfully');
 }