build: use manifest hooks for dev server proxy and fix hot reload for charts

CONTRIBUTING.md

@@ -75,7 +75,7 @@ little bit helps, and credit will always be given.
     - [Creating a new language dictionary](#creating-a-new-language-dictionary)
   - [Tips](#tips)
     - [Adding a new datasource](#adding-a-new-datasource)
-    - [Creating a new visualization type](#creating-a-new-visualization-type)
+    - [Improving visualizations](#improving-visualizations)
     - [Adding a DB migration](#adding-a-db-migration)
     - [Merging DB migrations](#merging-db-migrations)
     - [SQL Lab Async](#sql-lab-async)
@@ -389,7 +389,7 @@ Make sure your machine meets the [OS dependencies](https://superset.incubator.ap
 
 Developers should use a virtualenv.
 
-```
+```bash
 pip install virtualenv
 ```
 
@@ -726,7 +726,7 @@ In TypeScript/JavaScript, the technique is similar:
 we import `t` (simple translation), `tn` (translation containing a number).
 
 ```javascript
-import { t, tn } from "@superset-ui/translation";
+import { t, tn } from '@superset-ui/translation';
 ```
 
 ### Enabling language selection
@@ -803,11 +803,31 @@ Then, [extract strings for the new language](#extracting-new-strings-for-transla
 
    This means it'll register MyDatasource and MyOtherDatasource in superset.my_models module in the source registry.
 
-### Creating a new visualization type
+### Improving visualizations
+
+Superset is working towards a plugin system where new visualizations can be installed as optional npm packages. To achieve this goal, we are not accepting pull requests for new community-contributed visualization types at the moment. However, bugfixes for current visualizations are welcome. To edit the frontend code for visualizations, you will have to check out a copy of [apache-superset/superset-ui-plugins](https://github.com/apache-superset/superset-ui-plugins):
+
+```bash
+git clone https://github.com/apache-superset/superset-ui-plugins.git
+yarn && yarn build
+```
+
+Then use `npm link` to create a symlink of the source code in `superset-frontend/node_modules`:
+
+```bash
+cd incubator-superset/superset-frontend
+npm link ../../superset-ui-plugins/packages/superset-ui-[PLUGIN NAME]
+
+# Or to link all plugin packages:
+# npm link ../../superset-ui-plugins/packages/*
+
+# Start developing
+npm run dev-server
+```
+
+When plugin packages are linked with `npm link`, the dev server will automatically load files from the plugin's `/src` directory.
 
-Here's an example as a Github PR with comments that describe what the
-different sections of the code do:
-https://github.com/apache/incubator-superset/pull/3013
+Note that every time you do `npm install`, you will lose the symlink(s) and may have to run `npm link` again.
 
 ### Adding a DB migration
 
@@ -905,12 +925,14 @@ To do this, you'll need to:
 - Configure a results backend, here's a local `FileSystemCache` example,
   not recommended for production,
   but perfect for testing (stores cache in `/tmp`)
+
   ```python
   from werkzeug.contrib.cache import FileSystemCache
   RESULTS_BACKEND = FileSystemCache('/tmp/sqllab')
   ```
 
-* Start up a celery worker
+- Start up a celery worker
+
   ```shell script
   celery worker --app=superset.tasks.celery_app:app -Ofair
   ```

superset-frontend/package.json

@@ -231,10 +231,10 @@
     "typescript": "^3.8.3",
     "url-loader": "^1.0.1",
     "webpack": "^4.42.0",
-    "webpack-assets-manifest": "^3.1.1",
     "webpack-bundle-analyzer": "^3.6.1",
     "webpack-cli": "^3.3.11",
     "webpack-dev-server": "^3.10.3",
+    "webpack-manifest-plugin": "^2.2.0",
     "webpack-sources": "^1.4.3",
     "yargs": "12 - 15"
   },

superset-frontend/src/chart/Chart.jsx

@@ -74,6 +74,7 @@ const defaultProps = {
   setControlValue() {},
   triggerRender: false,
   dashboardId: null,
+  chartStackTrace: null,
 };
 
 class Chart extends React.PureComponent {

superset-frontend/src/dashboard/App.jsx

@@ -16,36 +16,18 @@
  * specific language governing permissions and limitations
  * under the License.
  */
+import { hot } from 'react-hot-loader/root';
 import React from 'react';
-import thunk from 'redux-thunk';
-import { createStore, applyMiddleware, compose } from 'redux';
 import { Provider } from 'react-redux';
-import { hot } from 'react-hot-loader/root';
 
-import { initFeatureFlags } from 'src/featureFlags';
-import { initEnhancer } from '../reduxUtils';
-import logger from '../middleware/loggerMiddleware';
 import setupApp from '../setup/setupApp';
 import setupPlugins from '../setup/setupPlugins';
 import DashboardContainer from './containers/Dashboard';
-import getInitialState from './reducers/getInitialState';
-import rootReducer from './reducers/index';
 
 setupApp();
 setupPlugins();
 
-const appContainer = document.getElementById('app');
-const bootstrapData = JSON.parse(appContainer.getAttribute('data-bootstrap'));
-initFeatureFlags(bootstrapData.common.feature_flags);
-const initState = getInitialState(bootstrapData);
-
-const store = createStore(
-  rootReducer,
-  initState,
-  compose(applyMiddleware(thunk, logger), initEnhancer(false)),
-);
-
-const App = () => (
+const App = ({ store }) => (
   <Provider store={store}>
     <DashboardContainer />
   </Provider>

superset-frontend/src/dashboard/index.jsx

@@ -18,6 +18,25 @@
  */
 import React from 'react';
 import ReactDOM from 'react-dom';
+import thunk from 'redux-thunk';
+import { createStore, applyMiddleware, compose } from 'redux';
+import { initFeatureFlags } from 'src/featureFlags';
+import { initEnhancer } from '../reduxUtils';
+import getInitialState from './reducers/getInitialState';
+import rootReducer from './reducers/index';
+import logger from '../middleware/loggerMiddleware';
+
 import App from './App';
 
-ReactDOM.render(<App />, document.getElementById('app'));
+const appContainer = document.getElementById('app');
+const bootstrapData = JSON.parse(appContainer.getAttribute('data-bootstrap'));
+initFeatureFlags(bootstrapData.common.feature_flags);
+const initState = getInitialState(bootstrapData);
+
+const store = createStore(
+  rootReducer,
+  initState,
+  compose(applyMiddleware(thunk, logger), initEnhancer(false)),
+);
+
+ReactDOM.render(<App store={store} />, document.getElementById('app'));

superset-frontend/src/explore/components/ExploreViewContainer.jsx

@@ -317,7 +317,7 @@ class ExploreViewContainer extends React.Component {
         errorMessage={this.renderErrorMessage()}
         refreshOverlayVisible={this.state.refreshOverlayVisible}
         addHistory={this.addHistory}
-        onQuery={this.onQuery.bind(this)}
+        onQuery={this.onQuery}
       />
     );
   }

superset-frontend/src/visualizations/presets/MainPreset.js

@@ -60,7 +60,7 @@ import {
   LineMultiChartPlugin,
   PieChartPlugin,
   TimePivotChartPlugin,
-} from '@superset-ui/legacy-preset-chart-nvd3/lib';
+} from '@superset-ui/legacy-preset-chart-nvd3';
 import { BoxPlotChartPlugin } from '@superset-ui/preset-chart-xy/esm/legacy';
 import { DeckGLChartPreset } from '@superset-ui/legacy-preset-chart-deckgl';