overwrite webpack config module.rules to avoid duplicate match on sou…

…rce files

bundler.js

@@ -1,25 +1,27 @@
 const createBundler = require('@airtable/blocks-webpack-bundler').default;
 
 function createConfig(baseConfig) {
-    baseConfig.module.rules.push({
-        test: /\.tsx$/,
-        exclude: [/node_modules/],
-        loader: 'babel-loader',
-        options: {
-            babelrc: false,
-            configFile: false,
-            presets: [
-                require.resolve('@babel/preset-env'),
-                require.resolve('@babel/preset-react'),
-                require.resolve('@babel/preset-typescript'),
-            ],
-            "plugins": [
-                ["@babel/plugin-proposal-decorators", { "legacy": true }],
-                ["@babel/plugin-proposal-class-properties", { "loose": false }]
-                // In contrast to MobX 4/5, "loose" must be false!    ^
-            ]
-        },
-    });
+    baseConfig.module.rules = [
+        {
+            test: /\.tsx$/,
+            exclude: [/node_modules/],
+            loader: 'babel-loader',
+            options: {
+                babelrc: false,
+                configFile: false,
+                presets: [
+                    require.resolve('@babel/preset-env'),
+                    require.resolve('@babel/preset-react'),
+                    require.resolve('@babel/preset-typescript'),
+                ],
+                "plugins": [
+                    ["@babel/plugin-proposal-decorators", { "legacy": true }],
+                    ["@babel/plugin-proposal-class-properties", { "loose": false }]
+                    // In contrast to MobX 4/5, "loose" must be false!    ^
+                ]
+            },
+        }
+    ];
     return baseConfig;
 }