Add "vetur.restartVLS" command (#67)

package.json

@@ -388,7 +388,14 @@
           "description": "Enable template interpolation service that offers hover / definition / references in Vue interpolations."
         }
       }
-    }
+    },
+    "commands": [
+      {
+        "command": "vetur.restartVLS",
+        "category": "Vetur",
+        "title": "Restart VLS (Vue Language Server)"
+      }
+    ]
   },
   "author": "chemzqm@gmail.com",
   "license": "MIT",

src/index.ts

@@ -1,4 +1,4 @@
-import { ExtensionContext, LanguageClient, LanguageClientOptions, ProvideCompletionItemsSignature, ServerOptions, services, TransportKind, window, workspace, WorkspaceConfiguration } from 'coc.nvim'
+import { commands, ExtensionContext, LanguageClient, LanguageClientOptions, ProvideCompletionItemsSignature, ServerOptions, services, TransportKind, window, workspace, WorkspaceConfiguration } from 'coc.nvim'
 import fs from 'fs'
 import os from 'os'
 import path from 'path'
@@ -93,6 +93,7 @@ export async function activate(context: ExtensionContext): Promise<void> {
   let client = new LanguageClient('vetur', 'Vetur Language Server', serverOptions, clientOptions)
   client.onReady().then(() => {
     registerCustomClientNotificationHandlers(client)
+    registerRestartVLSCommand(context, client)
   }).catch(_e => {
     // noop
   })
@@ -102,6 +103,32 @@ export async function activate(context: ExtensionContext): Promise<void> {
   )
 }
 
+async function displayInitProgress<T = void>(promise: Promise<T>) {
+  return window.withProgress(
+    {
+      title: 'Vetur initialization',
+      cancellable: true
+    },
+    () => promise
+  )
+}
+
+function registerRestartVLSCommand(
+  context: ExtensionContext,
+  client: LanguageClient
+) {
+  context.subscriptions.push(
+    commands.registerCommand('vetur.restartVLS', () =>
+      displayInitProgress(
+        client
+          .stop()
+          .then(() => client.start())
+          .then(() => client.onReady())
+      )
+    )
+  )
+}
+
 function registerCustomClientNotificationHandlers(client: LanguageClient): void {
   client.onNotification('$/displayInfo', (msg: string) => {
     window.showMessage(msg, 'more')