Don't use | null for ts config

Fixes #129794

Just fall back to undefined instead

extensions/typescript-language-features/package.json

@@ -139,11 +139,7 @@
       "order": 20,
       "properties": {
         "typescript.tsdk": {
-          "type": [
-            "string",
-            "null"
-          ],
-          "default": null,
+          "type": "string",
           "markdownDescription": "%typescript.tsdk.desc%",
           "scope": "window"
         },
@@ -163,11 +159,7 @@
           "scope": "window"
         },
         "typescript.npm": {
-          "type": [
-            "string",
-            "null"
-          ],
-          "default": null,
+          "type": "string",
           "markdownDescription": "%typescript.npm%",
           "scope": "machine"
         },
@@ -751,10 +743,7 @@
           "scope": "resource"
         },
         "typescript.locale": {
-          "type": [
-            "string",
-            "null"
-          ],
+          "type": "string",
           "enum": [
             "de",
             "es",
@@ -765,10 +754,8 @@
             "ko",
             "ru",
             "zh-CN",
-            "zh-TW",
-            null
+            "zh-TW"
           ],
-          "default": null,
           "markdownDescription": "%typescript.locale%",
           "scope": "window"
         },

extensions/typescript-language-features/package.nls.json

@@ -65,7 +65,7 @@
 	"configuration.tsserver.useSeparateSyntaxServer": "Enable/disable spawning a separate TypeScript server that can more quickly respond to syntax related operations, such as calculating folding or computing document symbols. Requires using TypeScript 3.4.0 or newer in the workspace.",
 	"configuration.tsserver.maxTsServerMemory": "The maximum amount of memory (in MB) to allocate to the TypeScript server process.",
 	"configuration.tsserver.experimental.enableProjectDiagnostics": "(Experimental) Enables project wide error reporting.",
-	"typescript.locale": "Sets the locale used to report JavaScript and TypeScript errors. Default of `null` uses VS Code's locale.",
+	"typescript.locale": "Sets the locale used to report JavaScript and TypeScript errors. Defaults to use VS Code's locale.",
 	"configuration.implicitProjectConfig.checkJs": "Enable/disable semantic checking of JavaScript files. Existing `jsconfig.json` or `tsconfig.json` files override this setting.",
 	"configuration.javascript.checkJs.checkJs.deprecation": "This setting has been deprecated in favor of `js/ts.implicitProjectConfig.checkJs`.",
 	"configuration.implicitProjectConfig.experimentalDecorators": "Enable/disable `experimentalDecorators` in JavaScript files that are not part of a project. Existing `jsconfig.json` or `tsconfig.json` files override this setting.",