feat: extend methods

examples/react-example1/src/App.js

@@ -29,7 +29,7 @@ class App extends React.Component {
     window.web3 = web3;
 
     this.setState({
-      title: Product.trackProperty("products", 0).map('title'),
+      title: Product.methods.products(0).track().map('title'),
       averageRating: rating$.pipe($average()),
       minRating: rating$.pipe($min()),
       maxRating: rating$.pipe($max()),

src/subspace.js

@@ -74,6 +74,19 @@ export default class Subspace {
       return this.trackProperty(SubspaceContract, propName, methodArgs, callArgs);
     }
 
+    Object.keys(SubspaceContract.methods).forEach(methodName => {
+      const oldFunc = SubspaceContract.methods[methodName];
+
+      const _this = this;
+      const newFunc = function(){
+        const txObject = oldFunc.apply(null, arguments);
+        txObject.track = (callArgs) => _this.trackProperty(SubspaceContract, methodName, txObject.arguments, callArgs);
+        return txObject;
+      }
+
+      SubspaceContract.methods[methodName] = newFunc;
+    });
+
     SubspaceContract.trackBalance = (erc20Address) => {
       return this.trackBalance(SubspaceContract.options.address, erc20Address);
     }