Revive JavaScript Bindings (#1177)

Summary:
Yoga's JavaScript bindings do not work past Node 10, or on recent versions of Ubuntu even using it. This is due to a reliance on `nbind`, a library which is no longer maintained. `nbind` itself abstracts over `embind` running Emscripten to generate an asm.js build, along with building Node native modules. In the meantime, [yoga-layout-prebuilt](https://www.npmjs.com/package/yoga-layout-prebuilt) has been used by the community instead of the official package.

https://github.com/facebook/yoga/pull/1177 was contributed as a conversion of bindings created using `nbind` to instead use `embind` directly.

I continued building on this to add more:
1. WebAssembly support (required to be async in browsers)
2. CMake + Ninja Build for the 4 flavors
3. TypeScript typings (partially generated)
4. yarn scripts to build (working on macOS, Ubuntu, Windows)
5. A README with some usage and contribution instructions
6. Updated tests to work with Jest, and updated general infra
7. ESLint and clang-format scripts
8. More GitHub actions (and now testing Windows)
9. Probably more I kinda got carried away here lol

The plan is to eventually publish this to NPM, but there is a little bit of work after this before that happens.

Pull Request resolved: https://github.com/facebook/yoga/pull/1177

Test Plan: The bindings pass Jest tests (both manual and generated). GitHub actions added for the different yarn scripts. Did some manual checks on using the library as TS.

Reviewed By: christophpurrer

Differential Revision: D42207782

Pulled By: NickGerleman

fbshipit-source-id: 1dc5ce440f1c2b9705a005bbdcc86f952785d94e

javascript/package.json

@@ -1,49 +1,55 @@
 {
   "name": "yoga-layout",
-  "version": "1.9.3",
-  "description": "Yoga is a cross-platform layout engine enabling maximum collaboration within your team by implementing an API many designers are familiar with, and opening it up to developers across different platforms.",
+  "version": "2.0.0-beta.1",
+  "description": "JavaScript bindings for the Yoga layout engine",
   "license": "MIT",
   "repository": {
     "type": "git",
     "url": "git@github.com:facebook/yoga.git"
   },
-  "main": "./dist/entry-node",
-  "browser": "./dist/entry-browser",
-  "config": {
-    "platform": "all"
+  "main": "./dist/index.js",
+  "types": "./dist/index.d.ts",
+  "exports": {
+    ".": {
+      "browser": "./dist/entrypoint/wasm-async.js",
+      "node": "./dist/entrypoint/wasm-async.js",
+      "default": "./dist/entrypoint/asmjs-async.js"
+    },
+    "./sync": {
+      "browser": "./dist/entrypoint/asmjs-sync.js",
+      "node": "./dist/entrypoint/wasm-sync.js",
+      "default": "./dist/entrypoint/asmjs-sync.js"
+    }
   },
+  "files": [
+    "dist/**",
+    "src_js/**"
+  ],
   "scripts": {
-    "which": "which",
-    "autogypi": "autogypi",
-    "node-gyp": "node-gyp",
-    "emcc-path": "emcc-path",
-    "is-monolithic": "test \"$(basename \"$(pwd)\")\" = javascript",
-    "copy-sources": "! npm -s run is-monolithic || (rsync -r --checksum --delete ../yoga/ sources/yoga/)",
-    "build:node": "npm run copy-sources && autogypi && node-gyp configure build",
-    "build:browser": "npm run copy-sources && autogypi && node-gyp configure build --asmjs=1",
-    "build:all": "npm run build:node && npm run build:browser",
-    "build": "cross-env \"npm --if-present run build:$npm_package_config_platform\"",
-    "test:node": "TEST_ENTRY=node time mocha --compilers js:babel-core/register --expose-gc -r tests/tools.js tests/Facebook.Yoga/**/*.js",
-    "test:browser": "TEST_ENTRY=browser time mocha --compilers js:babel-core/register --expose-gc -r tests/tools.js tests/Facebook.Yoga/**/*.js",
-    "test": "npm run test:node && npm run test:browser",
-    "benchmark": "npm run prepublish && node tests/run-bench $(find tests/Benchmarks -name '*.js')",
-    "install": "npm run build:node",
-    "prepublish": "npm run copy-sources && babel sources --out-dir dist && flow-copy-source sources dist"
-  },
-  "dependencies": {
-    "autogypi": "^0.2.2",
-    "nbind": "^0.3.14",
-    "node-gyp": "^3.6.2"
+    "benchmark": "just benchmark",
+    "build": "just build",
+    "lint": "just lint",
+    "lint:fix": "just lint --fix",
+    "test": "just test",
+    "test:asmjs-async": "just test:asmjs-async",
+    "test:asmjs-sync": "just test:asmjs-sync",
+    "test:wasm-async": "just test:wasm-async",
+    "test:wasm-sync": "just test:wasm-sync"
   },
   "devDependencies": {
-    "babel-cli": "^6.24.1",
-    "babel-core": "^6.25.0",
-    "babel-plugin-replace-require": "^0.0.4",
-    "babel-plugin-transform-flow-strip-types": "^6.22.0",
-    "babel-preset-es2015": "^6.24.1",
-    "babel-preset-stage-3": "^6.24.1",
-    "cross-env": "^4.0.0",
-    "flow-copy-source": "^2.0.7",
-    "mocha": "^3.2.0"
+    "@babel/cli": "^7.20.7",
+    "@babel/core": "^7.20.7",
+    "@babel/eslint-parser": "^7.19.1",
+    "@babel/preset-env": "^7.20.2",
+    "clang-format": "^1.8.0",
+    "eslint": "^8.30.0",
+    "eslint-config-prettier": "^8.5.0",
+    "eslint-plugin-jest": "^27.1.7",
+    "eslint-plugin-prettier": "^4.2.1",
+    "glob": "^8.0.3",
+    "jest": "^29.3.1",
+    "just-scripts": "^2.1.0",
+    "prettier": "^2.4.1",
+    "which": "^3.0.0"
   }
 }