add webpack.config

webpack.config.js

@@ -0,0 +1,18 @@
+const webpack = require('webpack');
+
+module.exports = {
+  resolve: {
+    fallback: {
+      "url": require.resolve("url/"),
+      "buffer": require.resolve("buffer/"),
+      "process": require.resolve("process/browser"),
+      "path": require.resolve("path-browserify"),
+    }
+  },
+  plugins: [
+    new webpack.ProvidePlugin({
+      process: 'process/browser',
+      Buffer: ['buffer', 'Buffer'],
+    }),
+  ],
+};