fix: false-positive error 'ts server not found' if project wasn't open

Author: thateverdmitriy

lib/main.js

@@ -18,10 +18,13 @@ class TypeScriptLanguageClient extends AutoLanguageClient {
 
   startServerProcess(projectPath) {
     this.supportedExtensions = atom.config.get('ide-typescript.javascriptSupport') ? allExtensions : tsExtensions
+    const serverPath = this.getServerPath(projectPath)
+    console.info(`starting typescript server: ${serverPath}`)
+
     return super.spawnChildNode([
       'node_modules/typescript-language-server/lib/cli',
       '--stdio',
-      '--tsserver-path', this.getServerPath(projectPath)
+      '--tsserver-path', serverPath
     ], { cwd: path.join(__dirname, '..') })
   }
 
@@ -44,6 +47,8 @@ class TypeScriptLanguageClient extends AutoLanguageClient {
 
   shouldStartForEditor(editor) {
     const projectPath = this.getProjectPath(editor.getURI() || '');
+    if (!projectPath) return false
+
     if (atom.config.get('ide-typescript.ignoreFlow') === true) {
       const flowConfigPath = path.join(projectPath, '.flowconfig')
       if (fs.existsSync(flowConfigPath)) return false
@@ -79,12 +84,20 @@ class TypeScriptLanguageClient extends AutoLanguageClient {
   }
 
   getServerPath(projectPath) {
-    const tsSpecifiedPath = atom.config.get('ide-typescript.typeScriptServer.path')
-    const localPath = path.resolve(projectPath, tsSpecifiedPath)
-    if (fs.existsSync(localPath)) {
-      return localPath
+    const relativePathSpecifiedByUser = atom.config.get('ide-typescript.typeScriptServer.path')
+    const relativePathDefault = 'node_modules/typescript/lib/tsserver.js'
+    const absPathLocal = path.resolve(projectPath, relativePathSpecifiedByUser)
+    const absPathGlobal = path.resolve(__dirname, '..', relativePathSpecifiedByUser)
+    const absPathGlobalDefault = path.resolve(__dirname, '..', relativePathDefault)
+
+    if (fs.existsSync(absPathLocal)) {
+      return absPathLocal
     }
-    return path.resolve(__dirname, '..', tsSpecifiedPath)
+    if (fs.existsSync(absPathGlobal)) {
+      return absPathGlobal
+    }
+
+    return absPathGlobalDefault
   }
 
   createTimeoutPromise(milliseconds, cancelPromise) {