Fix the filter example, and update typescript compiler version

Author: johnDance

Samples-Typescript/Filtering/filtering.ts

@@ -155,6 +155,7 @@ import {
 
             dashboard.worksheets.forEach(function(worksheet) {
                 worksheet.getFiltersAsync().then(async (filtersForWorksheet) => {
+                    console.log(filtersForWorksheet);
                     const filterClearPromises = [];
 
                     filtersForWorksheet.forEach(function(filter) {
@@ -163,7 +164,7 @@ import {
 
                     // Same pattern as in fetchFilters, wait until all promises have finished
                     // before updating the UI state.
-                    await Promise.all(filterClearPromises);
+                    await Promise.allSettled(filterClearPromises);
                     this.updateUIState(false);
                 });
             }, this);

package.json

@@ -4,7 +4,7 @@
   "description": "Sample code and documentation for the Tableau Extensions API.",
   "scripts": {
     "build": "npm run lint && webpack --config webpack.config.js --display-error-details",
-    "start": "node node_modules/http-server/bin/http-server -p 8765",
+    "start": "node node_modules/http-server/bin/http-server -p 8765 -c-1",
     "start-sandbox": "npx tabextsandbox --config sandbox-config.json",
     "lint": "npm run jslint && npm run tslint",
     "jslint": "semistandard ./Samples/*/*.js",
@@ -28,7 +28,7 @@
     "semistandard": "^11.0.0",
     "ts-loader": "^5.4.5",
     "tslint": "^5.16.0",
-    "typescript": "^3.4.5",
+    "typescript": "^3.9.10",
     "webpack": "^4.30.0",
     "webpack-cli": "^3.3.1"
   },