feat: experimental web support (#200)

Signed-off-by: Todd Baert <[email protected]>

Author: toddbaert

README.md

@@ -10,7 +10,7 @@ This is the JavaScript implementation of [OpenFeature](https://openfeature.dev),
 
 We support multiple data types for flags (numbers, strings, booleans, objects) as well as hooks, which can alter the lifecycle of a flag evaluation.
 
-This library is intended to be used in server-side contexts and has not been evaluated for use client-side or on mobile devices.
+**This library is intended to be used in server-side contexts and has only experimental support for web usage.**
 
 ## Installation
 

package.json

@@ -36,11 +36,9 @@
     "dist/"
   ],
   "exports": {
-    "node": {
-      "import": "./dist/esm/index.js",
-      "require": "./dist/cjs/index.js",
-      "default": "./dist/esm/index.js"
-    }
+    "import": "./dist/esm/index.js",
+    "require": "./dist/cjs/index.js",
+    "default": "./dist/cjs/index.js"
   },
   "devDependencies": {
     "@types/jest": "^28.1.4",

src/open-feature.ts

@@ -9,7 +9,7 @@ const GLOBAL_OPENFEATURE_API_KEY = Symbol.for('@openfeature/js.api');
 type OpenFeatureGlobal = {
   [GLOBAL_OPENFEATURE_API_KEY]?: OpenFeatureAPI;
 };
-const _global = global as OpenFeatureGlobal;
+const _globalThis = globalThis as OpenFeatureGlobal;
 
 class OpenFeatureAPI implements GlobalApi {
   private _provider: Provider = NOOP_PROVIDER;
@@ -18,13 +18,13 @@ class OpenFeatureAPI implements GlobalApi {
   private _logger: Logger = new DefaultLogger();
 
   static getInstance(): OpenFeatureAPI {
-    const globalApi = _global[GLOBAL_OPENFEATURE_API_KEY];
+    const globalApi = _globalThis[GLOBAL_OPENFEATURE_API_KEY];
     if (globalApi) {
       return globalApi;
     }
 
     const instance = new OpenFeatureAPI();
-    _global[GLOBAL_OPENFEATURE_API_KEY] = instance;
+    _globalThis[GLOBAL_OPENFEATURE_API_KEY] = instance;
     return instance;
   }