diff --git a/src/server/features/watchBuild.ts b/src/server/features/watchBuild.ts
index 2d8dea7..a1663c2 100644
--- a/src/server/features/watchBuild.ts
+++ b/src/server/features/watchBuild.ts
@@ -1,15 +1,13 @@
-import { ChildProcess, spawn } from 'child_process'
-import { disposeAll, StatusBarItem, workspace, TaskOptions } from 'coc.nvim'
-import { Command, CommandManager } from 'coc.nvim/lib/commands'
+import { disposeAll, StatusBarItem, TaskOptions, workspace } from 'coc.nvim'
+import { CommandManager } from 'coc.nvim/lib/commands'
+import Task from 'coc.nvim/lib/model/task'
 import findUp from 'find-up'
 import fs from 'fs'
 import path from 'path'
-import readline from 'readline'
 import { Disposable, Location } from 'vscode-languageserver-protocol'
 import Uri from 'vscode-uri'
 import which from 'which'
 import { resolveRoot } from '../utils/fs'
-import Task from 'coc.nvim/lib/model/task'
 
 const TSC = './node_modules/.bin/tsc'
 const countRegex = /Found\s+(\d+)\s+error/
@@ -126,13 +124,7 @@ export default class WatchProject implements Disposable {
     let docs = workspace.documents
     let idx = docs.findIndex(doc => doc.uri.indexOf(TSC) !== -1)
     if (idx !== -1) return
-    let doc = workspace.getDocument(workspace.bufnr)
-    let cwd: string
-    if (doc && doc.schema == 'file') {
-      cwd = path.dirname(Uri.parse(doc.uri).fsPath)
-    } else {
-      cwd = workspace.cwd
-    }
+    let cwd = workspace.cwd
     let res = findUp.sync(['node_modules'], { cwd })
     let cmd: string
     let root: string
@@ -178,11 +170,3 @@ function executable(command: string): boolean {
   }
   return true
 }
-
-function wait(ms: number): Promise<any> {
-  return new Promise(resolve => {
-    setTimeout(() => {
-      resolve()
-    }, ms)
-  })
-}
diff --git a/src/server/typescriptService.ts b/src/server/typescriptService.ts
index a5a55ae..f612f67 100644
--- a/src/server/typescriptService.ts
+++ b/src/server/typescriptService.ts
@@ -76,7 +76,7 @@ export interface ITypeScriptServiceClient {
   onTypesInstallerInitializationFailed: Event<Proto.TypesInstallerInitializationFailedEventBody>
   readonly logger: Logger
 
-  getProjectRootPath(uri: string): string
+  getProjectRootPath(uri: string): string | null
   normalizePath(resource: Uri): string | null
   asUrl(filepath: string): Uri
   toPath(uri: string): string
diff --git a/src/server/typescriptServiceClient.ts b/src/server/typescriptServiceClient.ts
index bb06b33..655f53e 100644
--- a/src/server/typescriptServiceClient.ts
+++ b/src/server/typescriptServiceClient.ts
@@ -3,7 +3,6 @@
  *  Licensed under the MIT License. See License.txt in the project root for license information.
  *--------------------------------------------------------------------------------------------*/
 import cp from 'child_process'
-import findUp from 'find-up'
 import fs from 'fs'
 import os from 'os'
 import path from 'path'
@@ -791,20 +790,22 @@ export default class TypeScriptServiceClient implements ITypeScriptServiceClient
     return args
   }
 
-  public getProjectRootPath(uri: string): string {
+  public getProjectRootPath(uri: string): string | null {
+    let root = workspace.cwd
     let u = Uri.parse(uri)
-    let { cwd } = workspace
-    if (u.scheme != 'file') return cwd
-    if (u.fsPath.startsWith(cwd) && cwd != os.homedir()) {
-      let files = fs.readdirSync(cwd)
-      if (files.indexOf('tsconfig.json') !== -1
-        || files.indexOf('jsconfig.json') !== -1
-        || files.indexOf('package.json') !== -1) {
-        return cwd
+    if (u.scheme == 'file') {
+      let folder = workspace.getWorkspaceFolder(uri)
+      if (folder) {
+        root = Uri.parse(folder.uri).fsPath
+      } else {
+        let filepath = Uri.parse(uri).fsPath
+        if (!filepath.startsWith(root)) {
+          root = path.dirname(filepath)
+        }
       }
     }
-    let res = findUp.sync(['tsconfig.json', 'jsconfig.json'], { cwd: path.dirname(u.fsPath) })
-    return res ? path.dirname(res) : workspace.cwd
+    if (root == os.homedir()) return null
+    return root
   }
 
   public configurePlugin(pluginName: string, configuration: {}): any {
diff --git a/src/server/utils/modules.ts b/src/server/utils/modules.ts
index 4453ca2..9c99c95 100644
--- a/src/server/utils/modules.ts
+++ b/src/server/utils/modules.ts
@@ -30,10 +30,9 @@ function getManager(uri: string): string {
   return res.endsWith('yarn.lock') ? 'yarn' : 'npm'
 }
 
-function getRoot(uri: string): string {
-  let dir = path.dirname(Uri.parse(uri).fsPath)
-  let res = findUp.sync(['package.json'], { cwd: dir })
-  if (!res) return dir
+function getRoot(): string | null {
+  let res = findUp.sync(['package.json'], { cwd: workspace.cwd })
+  if (!res) return null
   return path.dirname(res)
 }
 
@@ -76,7 +75,11 @@ export function distinct<T>(array: T[], keyFn?: (t: T) => string): T[] {
 
 export async function installModules(uri: string, names: string[]): Promise<void> {
   names = distinct(names)
-  let root = getRoot(uri)
+  let root = getRoot()
+  if (!root) {
+    workspace.showMessage(`package.json not found from cwd: ${workspace.cwd}`, 'error')
+    return
+  }
   let arr = names.concat(names.map(s => `@types/${s}`))
   let statusItem = workspace.createStatusBarItem(99, { progress: true })
   statusItem.text = `Checking module ${arr.join(' ')}`