fix: change build target to ES5 / IE11. Fixes #835

.babelrc

@@ -1,8 +1,8 @@
 {
-    "presets": [["@babel/preset-env", { "targets": { "node": "current" } }]],
+    "presets": [["@babel/preset-env", { "targets": { "ie": "11" } }]],
     "plugins": [
         ["@babel/plugin-proposal-decorators", { "legacy": true}],
         ["@babel/plugin-proposal-class-properties", { "loose": true}],
         "@babel/plugin-transform-react-jsx"
     ]
-}
+}

.watchmanconfig

@@ -0,0 +1 @@
+{}

package.json

@@ -137,4 +137,4 @@
     ],
     "testURL": "http://127.0.0.1/"
   }
-}
+}

src/observer.tsx

@@ -39,7 +39,8 @@ export function observer<T extends IReactComponent>(component: T): T {
         if (typeof baseRender !== "function")
             throw new Error("render property of ForwardRef was not a function")
         return React.forwardRef(function ObserverForwardRef() {
-            return <Observer>{() => baseRender.apply(undefined, arguments)}</Observer>
+            const args = arguments;
+            return <Observer>{() => baseRender.apply(undefined, args)}</Observer>
         }) as T
     }
 

test/inject.test.tsx

@@ -397,9 +397,10 @@ describe("inject based context", () => {
         let injectRender = 0
 
         function connect(): IReactComponent {
+            const args = arguments;
             return (component: IReactComponent) =>
                 // @ts-ignore
-                inject.apply(this, arguments)(observer(component))
+                inject.apply(this, args)(observer(component))
         }
 
         class State {

tsconfig.json

@@ -21,7 +21,7 @@
         "sourceMap": false,
         "strict": true,
         "suppressImplicitAnyIndexErrors": true,
-        "target": "es6"
+        "target": "es5"
     },
     "include": ["src/**/*.ts", "test/**/*.ts"]
 }