From: QueensGambit <curry-berry@freenet.de>
Date: Sun, 23 Aug 2020 17:56:19 +0000 (+0200)
Subject: updated ffish.js for initial npm version
X-Git-Url: http://winboard.nl/cgi-bin?a=commitdiff_plain;h=29f35add8e3cd4990fbf4f1baf26fc882cf019b4;p=fairystockfish.git

updated ffish.js for initial npm version
+ added ffish.info() with test
+ added ES6 compile instructions to README.md
+ updated package.json
---

diff --git a/src/ffishjs.cpp b/src/ffishjs.cpp
index 41ecdb4..73eb6b6 100644
--- a/src/ffishjs.cpp
+++ b/src/ffishjs.cpp
@@ -206,10 +206,16 @@ private:
   }
 };
 
+// returns the version of the Fairy-Stockfish binary
+std::string info() {
+   return engine_info();
+}
+
 bool Board::sfInitialized = false;
 
 // binding code
 EMSCRIPTEN_BINDINGS(ffish_js) {
+  function("info", &info);
   class_<Board>("Board")
     .constructor<>()
     .constructor<std::string>()
diff --git a/tests/js/README.md b/tests/js/README.md
index f216efa..8068e2e 100644
--- a/tests/js/README.md
+++ b/tests/js/README.md
@@ -1,15 +1,21 @@
 # ffish.js
 
-**ffish.js** is a high performance JavaScript library which supports all chess variants of _FairyStockfish_.
+A high performance WebAssembly chess variant library based on _Fairy-Stockfish_.
 
 It is built using emscripten/Embind from C++ source code.
 
 * https://emscripten.org/docs/porting/connecting_cpp_and_javascript/embind.html
 
+## Install instructions
+
+```bash
+npm install ffish
+```
+
 ## Build instuctions
 
 ```bash
-cd ../../src
+cd Fairy-Stockfish/src
 ```
 ```bash
 emcc -O3 --bind ffishjs.cpp \
@@ -45,7 +51,7 @@ xboard.cpp \
 Load the API in JavaScript:
 
 ```javascript
-const ffish = require('./ffish.js');
+const ffish = require('ffish');
 ```
 
 Create a new variant board from its default starting position:
@@ -96,3 +102,57 @@ npm install
 ```bash
 node index.js
 ```
+
+## Compile as ES6/ES2015 module
+
+Some environments such as [vue-js](https://vuejs.org/) may require the library to be exported
+  as a ES6/ES2015 module.
+
+```bash
+cd Fairy-Stockfish/src
+```
+```bash
+emcc -O3 --bind \
+-s ENVIRONMENT='web,worker' -s EXPORT_ES6=1 -s MODULARIZE=1 -s USE_ES6_IMPORT_META=0 \
+ffishjs.cpp \
+benchmark.cpp \
+bitbase.cpp \
+bitboard.cpp \
+endgame.cpp \
+evaluate.cpp \
+material.cpp \
+misc.cpp \
+movegen.cpp \
+movepick.cpp \
+parser.cpp \
+partner.cpp \
+pawns.cpp \
+piece.cpp \
+position.cpp \
+psqt.cpp \
+search.cpp \
+thread.cpp \
+timeman.cpp \
+tt.cpp \
+uci.cpp \
+syzygy/tbprobe.cpp \
+ucioption.cpp \
+variant.cpp \
+xboard.cpp \
+-o ../tests/js/ffish.js
+```
+
+Later the module can be imported as follows:
+
+```javascript
+import Module from './ffish.js';
+let ffish = null;
+
+new Module().then(loadedModule => {
+    ffish = loadedModule;
+    console.log(`initialized ${ffish} ${loadedModule}`);
+    }
+});
+
+```
+References: [emscripten/#10114](https://github.com/emscripten-core/emscripten/issues/10114)
diff --git a/tests/js/package.json b/tests/js/package.json
index 150c016..a454074 100644
--- a/tests/js/package.json
+++ b/tests/js/package.json
@@ -1,22 +1,33 @@
 {
-  "name": "ffish_test",
-  "version": "1.0.0",
-  "description": "Testing server for ffish.js",
-  "main": "index.js",
+  "name": "ffish",
+  "version": "0.1.4",
+  "description": "A high performance WebAssembly chess variant library based on Fairy-Stockfish",
+  "main": "ffish.js",
   "scripts": {
-    "test": "mocha"
+    "test": "mocha",
+    "dev": "node index"
   },
-  "author": "Fabian Fichter, Johannes Czech",
+  "author": [
+    {
+      "name": "Fabian Fichter",
+      "url": "https://github.com/ianfab"
+    },
+    {
+      "name": "Johannes Czech",
+      "url": "https://github.com/QueensGambit"
+    }
+  ],
+  "keywords": ["wasm", "library", "chess-variants", "fairy-stockfish"],
   "license": "GPL-3.0",
-  "dependencies": {
+  "homepage": "https://github.com/ianfab/Fairy-Stockfish/tree/master/tests/js#readme",
+  "dependencies": {},
+  "devDependencies": {
+    "chai": "^4.2.0",
     "chess": "^0.4.3",
     "chess.js": "^0.11.0",
     "crazyhouse.js": "0.0.8",
     "express": "^4.17.1",
+    "mocha": "^8.0.1",
     "performance": "^1.4.0"
-  },
-  "devDependencies": {
-    "chai": "^4.2.0",
-    "mocha": "^8.0.1"
   }
 }
diff --git a/tests/js/test.js b/tests/js/test.js
index 5b29098..a0a6462 100644
--- a/tests/js/test.js
+++ b/tests/js/test.js
@@ -198,3 +198,9 @@ describe('board.isGameOver()', function () {
     chai.expect(board.isGameOver()).to.equal(true);
   });
 });
+
+describe('ffish.info()', function () {
+  it("it returns the version of the Fairy-Stockfish binary", () => {
+    chai.expect(ffish.info()).to.be.a('string');
+  });
+});