Git a working version of the VSCode client

.vscode/exsentions.json

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+{
+	// See https://go.microsoft.com/fwlink/?LinkId=827846 to learn about workspace recommendations.
+	// Extension identifier format: ${publisher}.${name}. Example: vscode.csharp
+
+	// List of extensions which should be recommended for users of this workspace.
+	"recommendations": [
+		"dbaeumer.vscode-eslint"
+	]
+}

.vscode/launch.json

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+// A launch configuration that compiles the extension and then opens it inside a new window
+{
+	"version": "0.2.0",
+	"configurations": [
+		{
+			"type": "extensionHost",
+			"request": "launch",
+			"name": "Launch Client",
+			"runtimeExecutable": "${execPath}",
+			"args": ["--extensionDevelopmentPath=${workspaceRoot}"],
+			"outFiles": ["${workspaceRoot}/client/out/**/*.js"],
+			"preLaunchTask": {
+				"type": "npm",
+				"script": "watch"
+			}
+		},
+		{
+			"name": "Language Server E2E Test",
+			"type": "extensionHost",
+			"request": "launch",
+			"runtimeExecutable": "${execPath}",
+			"args": [
+				"--extensionDevelopmentPath=${workspaceRoot}",
+				"--extensionTestsPath=${workspaceRoot}/client/out/test/index",
+				"${workspaceRoot}/client/testFixture"
+			],
+			"outFiles": ["${workspaceRoot}/client/out/test/**/*.js"]
+		}
+	]
+}

.vscode/settings.json

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+{
+	"editor.insertSpaces": false,
+	"typescript.tsc.autoDetect": "off",
+	"typescript.preferences.quoteStyle": "single",
+	"editor.codeActionsOnSave": {
+		"source.fixAll.eslint": true
+	}
+}

.vscode/tasks.json

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+{
+	"version": "2.0.0",
+	"tasks": [
+		{
+			"type": "npm",
+			"script": "compile",
+			"group": "build",
+			"presentation": {
+				"panel": "dedicated",
+				"reveal": "never"
+			},
+			"problemMatcher": [
+				"$tsc"
+			]
+		},
+		{
+			"type": "npm",
+			"script": "watch",
+			"isBackground": true,
+			"group": {
+				"kind": "build",
+				"isDefault": true
+			},
+			"presentation": {
+				"panel": "dedicated",
+				"reveal": "never"
+			},
+			"problemMatcher": [
+				"$tsc-watch"
+			]
+		}
+	]
+}

README.md

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+# LSP Example
+
+Heavily documented sample code for https://code.visualstudio.com/api/language-extensions/language-server-extension-guide
+
+## Functionality
+
+This Language Server works for plain text file. It has the following language features:
+- Completions
+- Diagnostics regenerated on each file change or configuration change
+
+It also includes an End-to-End test.
+
+## Structure
+
+```
+.
+├── client // Language Client
+│   ├── src
+│   │   ├── test // End to End tests for Language Client / Server
+│   │   └── extension.ts // Language Client entry point
+├── package.json // The extension manifest.
+└── server // Language Server
+    └── src
+        └── server.ts // Language Server entry point
+```
+
+## Running the Sample
+
+- Run `npm install` in this folder. This installs all necessary npm modules in both the client and server folder
+- Open VS Code on this folder.
+- Press Ctrl+Shift+B to start compiling the client and server in [watch mode](https://code.visualstudio.com/docs/editor/tasks#:~:text=The%20first%20entry%20executes,the%20HelloWorld.js%20file.).
+- Switch to the Run and Debug View in the Sidebar (Ctrl+Shift+D).
+- Select `Launch Client` from the drop down (if it is not already).
+- Press ▷ to run the launch config (F5).
+- In the [Extension Development Host](https://code.visualstudio.com/api/get-started/your-first-extension#:~:text=Then%2C%20inside%20the%20editor%2C%20press%20F5.%20This%20will%20compile%20and%20run%20the%20extension%20in%20a%20new%20Extension%20Development%20Host%20window.) instance of VSCode, open a document in 'plain text' language mode.
+  - Type `j` or `t` to see `Javascript` and `TypeScript` completion.
+  - Enter text content such as `AAA aaa BBB`. The extension will emit diagnostics for all words in all-uppercase.