Bump Node.js packages and update testing infrastructure

.mocharc.json

@@ -1,12 +1,8 @@
 {
+  "require": "esbuild-register",
   "color": true,
   "enable-source-maps": true,
-  "extensions": [
-    ".js",
-    ".jsx"
-  ],
-  "require": "source-map-support/register",
   "timeout": 600000,
   "slow": 2000,
-  "spec": "test/**/*.test.js"
+  "spec": "test/**/*.test.ts"
 }

.npmrc

@@ -2,6 +2,5 @@
 save=true
 ; We use a public Azure Artifacts mirror
 registry=https://pkgs.dev.azure.com/powershell/PowerShell/_packaging/powershell/npm/registry/
-always-auth=true
 ; But we don't want references to it in the lockfile
 omit-lockfile-registry-resolved=true

.prettierrc

@@ -0,0 +1,4 @@
+{
+  "tabWidth": 2,
+  "plugins": ["prettier-plugin-organize-imports"]
+}

.vscode-test.mjs

@@ -0,0 +1,15 @@
+import os from "os";
+import path	from "path";
+import { defineConfig } from "@vscode/test-cli";
+
+export default defineConfig({
+	files: "test/**/*.test.ts",
+	// The default user data directory had too many characters for the IPC connection on macOS in CI.
+	launchArgs: [ "--profile-temp", "--user-data-dir", path.join(os.tmpdir(), "vscode-user-data") ],
+    workspaceFolder: "test/TestEnvironment.code-workspace",
+	mocha: {
+		ui: "bdd", // describe, it, etc.
+        require: "esbuild-register",
+		timeout: 60 * 1000 // 10 minutes to allow for debugging
+	},
+});

eslint.config.mjs

@@ -0,0 +1,48 @@
+import eslint from "@eslint/js";
+import eslintConfigPrettier from "eslint-config-prettier/flat";
+import tseslint from "typescript-eslint";
+
+export default tseslint.config(
+  eslint.configs.recommended,
+  tseslint.configs.strictTypeChecked,
+  eslintConfigPrettier,
+  {
+    languageOptions: {
+      parserOptions: {
+        projectService: true,
+        tsconfigRootDir: import.meta.dirname,
+      },
+    },
+    rules: {
+      "@typescript-eslint/explicit-function-return-type": "error",
+      "@typescript-eslint/no-empty-object-type": "off",
+      "@typescript-eslint/no-floating-promises": [
+        "error",
+        {
+          ignoreVoid: true,
+        },
+      ],
+      "@typescript-eslint/no-non-null-assertion": "off",
+      "@typescript-eslint/no-require-imports": "off",
+      "@typescript-eslint/no-unused-vars": [
+        "error",
+        {
+          argsIgnorePattern: "^_",
+        },
+      ],
+      "@typescript-eslint/no-unsafe-argument": "off",
+      "@typescript-eslint/no-unsafe-assignment": "off",
+      "@typescript-eslint/no-unsafe-call": "off",
+      "@typescript-eslint/no-unsafe-member-access": "off",
+      "@typescript-eslint/no-unsafe-return": "off",
+      "@typescript-eslint/restrict-template-expressions": "off",
+      "@typescript-eslint/prefer-nullish-coalescing": [
+        "error",
+        {
+          ignoreConditionalTests: true,
+          ignoreMixedLogicalExpressions: true,
+        },
+      ],
+    },
+  },
+);