TS migration. #2288. (#2328)

* Added TS. Updated build and linting config. Added types.

* [ts-migrate][.] Rename files from JS/JSX to TS/TSX

Co-authored-by: ts-migrate <>

* [ts-migrate][.] Run TS Migrate

Co-authored-by: ts-migrate <>

* Corrected files mangled by ts-migrate.

* Updated lint config, minor linting.

* Re-enabled Husky.

* Updated tests and config.

* Reverted webpack devtool config.

* Removed obsolete snapshots.

* Added annotations snap.

* Updated tsconfig includes wrt linting.

* Removed ts-migrate.

Co-authored-by: Timmy Huang <tihuan@users.noreply.github.com>

client/src/reducers/autosave.ts

@@ -0,0 +1,90 @@
+const Autosave = (
+  state = {
+    // cell labels
+    obsAnnotationSaveInProgress: false,
+    lastSavedAnnoMatrix: null,
+
+    // gene sets
+    genesetSaveInProgress: false,
+    lastSavedGenesets: null,
+
+    // error state
+    error: false,
+  },
+  action: any,
+  nextSharedState: any
+) => {
+  switch (action.type) {
+    case "annoMatrix: init complete": {
+      return {
+        ...state,
+        error: false,
+        obsAnnotationSaveInProgress: false,
+        lastSavedAnnoMatrix: action.annoMatrix,
+      };
+    }
+
+    case "writable obs annotations - save started": {
+      return {
+        ...state,
+        obsAnnotationSaveInProgress: true,
+      };
+    }
+
+    case "writable obs annotations - save error": {
+      return {
+        ...state,
+        error: action.message,
+        obsAnnotationSaveInProgress: false,
+      };
+    }
+
+    case "writable obs annotations - save complete": {
+      const { lastSavedAnnoMatrix } = action;
+      return {
+        ...state,
+        obsAnnotationSaveInProgress: false,
+        error: false,
+        lastSavedAnnoMatrix,
+      };
+    }
+
+    case "geneset: initial load": {
+      return {
+        ...state,
+        genesetSaveInProgress: false,
+        lastSavedGenesets: nextSharedState.genesets.genesets,
+      };
+    }
+
+    case "autosave: genesets started": {
+      return {
+        ...state,
+        genesetSaveInProgress: true,
+      };
+    }
+
+    case "autosave: genesets error": {
+      return {
+        ...state,
+        genesetSaveInProgress: false,
+        error: action.message,
+      };
+    }
+
+    case "autosave: genesets complete": {
+      const { lastSavedGenesets } = action;
+      return {
+        ...state,
+        genesetSaveInProgress: false,
+        error: false,
+        lastSavedGenesets,
+      };
+    }
+
+    default:
+      return { ...state };
+  }
+};
+
+export default Autosave;