TypeScript docs (#4680)

* Eclipse ignore

* TypeScript support

* Prefixing enums

* Test results

* Merged JS and TS generators

* Fixed AppVeyor build problems

* Fixed more AppVeyor build problems

* Fixed more AppVeyor build problems

* Changed TS flag to options struct

* Storing options by value

* Removed unneeded const

* Re-export support for unions

* Uint support

* Casting bools to numbers for mutation

* TS shell tests

* Reverted generates js test file to original version

* Backing up js tests and properly generating test data

* Not importing flatbuffers for TS test generation

* Not overwriting generated js for tests

* AppVeyor test fixes

* Generating the most strict TS code possible

* Not returning null when creating vectors

* Not returning null from struct contructors

* Vector of unions for ts/js

* Sanity check for languages

* Indentation fix + output test files

* Vectors of unions for php

* Fixes to union vector handling + tests

* Fix for strictPropertyInitialization

* Fix for new aligned operator new for gcc >= 7.1

* Not generating imports/ns prefixes with --gen-all

* TypeScript docs

docs/source/FlatBuffers.md

@@ -4,7 +4,7 @@ FlatBuffers    {#flatbuffers_index}
 # Overview {#flatbuffers_overview}
 
 [FlatBuffers](@ref flatbuffers_overview) is an efficient cross platform
-serialization library for C++, C#, C, Go, Java, JavaScript, PHP, and Python.
+serialization library for C++, C#, C, Go, Java, JavaScript, TypeScript, PHP, and Python.
 It was originally created at Google for game development and other
 performance-critical applications.
 

docs/source/Support.md

@@ -18,27 +18,28 @@ In general:
 
 NOTE: this table is a start, it needs to be extended.
 
-Feature                        | C++    | Java   | C#     | Go     | Python | JS        | C        | PHP | Ruby
------------------------------- | ------ | ------ | ------ | ------ | ------ | --------- | ------  | --- | ----
-Codegen for all basic features | Yes    | Yes    | Yes    | Yes    | Yes    | Yes       | Yes     | WiP | WiP
-JSON parsing                   | Yes    | No     | No     | No     | No     | No        | Yes     | No  | No
-Simple mutation                | Yes    | Yes    | Yes    | Yes     | No     | No        | No      | No  | No
-Reflection                     | Yes    | No     | No     | No     | No     | No        | Basic   | No  | No
-Buffer verifier                | Yes    | No     | No     | No     | No     | No        | Yes     | No  | No
-Testing: basic                 | Yes    | Yes    | Yes    | Yes    | Yes    | Yes       | Yes     | ?   | ?
-Testing: fuzz                  | Yes    | No     | No     | Yes    | Yes    | No        | No      | ?   | ?
-Performance:                   | Superb | Great  | Great  | Great  | Ok     | ?         | Superb  | ?   | ?
-Platform: Windows              | VS2010 | Yes    | Yes    | ?      | ?      | ?         | VS2010  | ?   | ?
-Platform: Linux                | GCC282 | Yes    | ?      | Yes    | Yes    | ?         | Yes     | ?   | ?
-Platform: OS X                 | Xcode4 | ?      | ?      | ?      | Yes    | ?         | Yes     | ?   | ?
-Platform: Android              | NDK10d | Yes    | ?      | ?      | ?      | ?         | ?       | ?   | ?
-Platform: iOS                  | ?      | ?      | ?      | ?      | ?      | ?         | ?       | ?   | ?
-Engine: Unity                  | ?      | ?      | Yes    | ?      | ?      | ?         | ?       | ?   | ?
-Primary authors (github)       | gwvo   | gwvo   | ev*/js*| rw     | rw     | evanw/ev* | mik*    | ch* | rw
+Feature                        | C++    | Java   | C#     | Go     | Python | JS        | TS        | C        | PHP | Ruby
+------------------------------ | ------ | ------ | ------ | ------ | ------ | --------- | --------- | ------  | --- | ----
+Codegen for all basic features | Yes    | Yes    | Yes    | Yes    | Yes    | Yes       | Yes       | Yes     | WiP | WiP
+JSON parsing                   | Yes    | No     | No     | No     | No     | No        | No        | Yes     | No  | No
+Simple mutation                | Yes    | Yes    | Yes    | Yes     | No     | No        | No        | No      | No  | No
+Reflection                     | Yes    | No     | No     | No     | No     | No        | No        | Basic   | No  | No
+Buffer verifier                | Yes    | No     | No     | No     | No     | No        | No        | Yes     | No  | No
+Testing: basic                 | Yes    | Yes    | Yes    | Yes    | Yes    | Yes       | Yes       | Yes     | ?   | ?
+Testing: fuzz                  | Yes    | No     | No     | Yes    | Yes    | No        | No        | No      | ?   | ?
+Performance:                   | Superb | Great  | Great  | Great  | Ok     | ?         | ?         | Superb  | ?   | ?
+Platform: Windows              | VS2010 | Yes    | Yes    | ?      | ?      | ?         | Yes       | VS2010  | ?   | ?
+Platform: Linux                | GCC282 | Yes    | ?      | Yes    | Yes    | ?         | Yes       | Yes     | ?   | ?
+Platform: OS X                 | Xcode4 | ?      | ?      | ?      | Yes    | ?         | Yes       | Yes     | ?   | ?
+Platform: Android              | NDK10d | Yes    | ?      | ?      | ?      | ?         | ?         | ?       | ?   | ?
+Platform: iOS                  | ?      | ?      | ?      | ?      | ?      | ?         | ?         | ?       | ?   | ?
+Engine: Unity                  | ?      | ?      | Yes    | ?      | ?      | ?         | ?         | ?       | ?   | ?
+Primary authors (github)       | gwvo   | gwvo   | ev*/js*| rw     | rw     | evanw/ev* | kr        | mik*    | ch* | rw
 
   * ev = evolutional
   * js = jonsimantov
   * mik = mikkelfj
   * ch = chobie
+  * kr = krojew
 
 <br>

docs/source/TypeScriptUsage.md

+Use in TypeScript    {#flatbuffers_guide_use_typescript}
+=================
+
+## Before you get started
+
+Before diving into the FlatBuffers usage in TypeScript, it should be noted that
+the [Tutorial](@ref flatbuffers_guide_tutorial) page has a complete guide to
+general FlatBuffers usage in all of the supported languages
+(including TypeScript). This page is specifically designed to cover the nuances
+of FlatBuffers usage in TypeScript.
+
+You should also have read the [Building](@ref flatbuffers_guide_building)
+documentation to build `flatc` and should be familiar with
+[Using the schema compiler](@ref flatbuffers_guide_using_schema_compiler) and
+[Writing a schema](@ref flatbuffers_guide_writing_schema).
+
+## FlatBuffers TypeScript library code location
+
+The code for the FlatBuffers TypeScript library can be found at
+`flatbuffers/js` with typings available at @types/flatubffers.
+
+## Testing the FlatBuffers TypeScript library
+
+To run the tests, use the [TypeScriptTest.sh](https://github.com/google/
+flatbuffers/blob/master/tests/TypeScriptTest.sh) shell script.
+
+*Note: The TypeScript test file requires [Node.js](https://nodejs.org/en/).*
+
+## Using the FlatBuffers TypeScript libary
+
+*Note: See [Tutorial](@ref flatbuffers_guide_tutorial) for a more in-depth
+example of how to use FlatBuffers in TypeScript.*
+
+FlatBuffers supports both reading and writing FlatBuffers in TypeScript.
+
+To use FlatBuffers in your own code, first generate TypeScript classes from your
+schema with the `--ts` option to `flatc`. Then you can include both FlatBuffers
+and the generated code to read or write a FlatBuffer.
+
+For example, here is how you would read a FlatBuffer binary file in TypeScript:
+First, include the library and generated code. Then read the file into an
+`Uint8Array`. Make a `flatbuffers.ByteBuffer` out of the `Uint8Array`, and pass
+the ByteBuffer to the `getRootAsMonster` function.
+
+~~~{.ts}
+  // note: import flabuffers with your desired import method
+
+  import { MyGame } from './monster_generated';
+
+  let data = new Uint8Array(fs.readFileSync('monster.dat'));
+  let buf = new flatbuffers.ByteBuffer(data);
+
+  let monster = MyGame.Example.Monster.getRootAsMonster(buf);
+~~~
+
+Now you can access values like this:
+
+~~~{.ts}
+  let hp = monster.hp();
+  let pos = monster.pos();
+~~~
+
+## Text parsing FlatBuffers in TypeScript
+
+There currently is no support for parsing text (Schema's and JSON) directly
+from TypeScript.

docs/source/groups

@@ -13,6 +13,9 @@
 /// @defgroup flatbuffers_javascript_api JavaScript API
 /// @brief FlatBuffers API for JavaScript
 
+/// @defgroup flatbuffers_typescript_api TypeScript API
+/// @brief FlatBuffers API for TypeScript
+
 /// @defgroup flatbuffers_php_api PHP API
 /// @brief FlatBuffers API for PHP