Use the Microsoft CFS registry instead of npm's registry directly (#12787)

.github/actions/.npmrc

@@ -0,0 +1,2 @@
+registry=https://pkgs.dev.azure.com/azure-public/VisualCpp/_packaging/cpp_PublicPackages/npm/registry/
+always-auth=true

CONTRIBUTING.md

@@ -47,4 +47,10 @@ instructions provided by the bot. You will only need to do this once across all
 
 This project has adopted the [Microsoft Open Source Code of Conduct](https://opensource.microsoft.com/codeofconduct/).
 For more information see the [Code of Conduct FAQ](https://opensource.microsoft.com/codeofconduct/faq/)
-or contact [opencode@microsoft.com](mailto:opencode@microsoft.com) with any additional questions or comments.
+or contact [opencode@microsoft.com](mailto:opencode@microsoft.com) with any additional questions or comments.
+
+### Adding/Updating package.json dependencies
+
+We maintain a public Azure Artifacts feed that we point the package manager to in .npmrc files. If you want to add a dependency or update a version in package.json, you may need to contact us so we can add it to our feed. Please ping our team in a PR or new issue if you experience this issue.
+
+For local development, you can delete the .npmrc file and the matching `yarn.lock` file while you wait for us to update the feed. However, these changes will need to be reverted in your branch before we will accept a PR.

Extension/.npmrc

@@ -0,0 +1,2 @@
+registry=https://pkgs.dev.azure.com/azure-public/VisualCpp/_packaging/cpp_PublicPackages/npm/registry/
+always-auth=true

Extension/src/LanguageServer/Providers/codeActionProvider.ts

@@ -144,7 +144,7 @@ export class CodeActionProvider implements vscode.CodeActionProvider {
                         if (codeActionCodeInfo !== undefined) {
                             if (codeActionCodeInfo.fixAllTypeCodeAction !== undefined &&
                                 (codeActionCodeInfo.uriToInfo.size > 1 ||
-                                    codeActionCodeInfo.uriToInfo.values().next().value.numValidWorkspaceEdits > 1)) {
+                                    (codeActionCodeInfo.uriToInfo.values().next().value?.numValidWorkspaceEdits ?? 0) > 1)) {
                                 // Only show the "fix all type" if there is more than one fix for the type.
                                 fixCodeActions.push(codeActionCodeInfo.fixAllTypeCodeAction);
                             }
@@ -161,7 +161,7 @@ export class CodeActionProvider implements vscode.CodeActionProvider {
                         if (codeActionCodeInfo.removeAllTypeCodeAction !== undefined &&
                             codeActionCodeInfo.uriToInfo.size > 0 &&
                             (codeActionCodeInfo.uriToInfo.size > 1 ||
-                                codeActionCodeInfo.uriToInfo.values().next().value.identifiers.length > 1)) {
+                                (codeActionCodeInfo.uriToInfo.values().next().value?.identifiers?.length ?? 0) > 1)) {
                             // Only show the "clear all type" if there is more than one fix for the type.
                             removeAllTypeAvailable = true;
                         }