init commit

src/services/env.js

@@ -0,0 +1,17 @@
+import _global from "../polyfill/_global";
+
+
+export function execFunc(target, func, ...options) {
+  if (target) {
+    let funcs = func.split('.');
+    let instant = target;
+    while (funcs.length > 1) {
+      instant = instant[funcs.shift()];
+    }
+    if (instant && funcs.length == 1) {
+      if (instant.hasOwnProperty(funcs[0])) {
+        return instant[funcs[0]](...options);
+      }
+    }
+  }
+}