diff --git a/packages/@vuepress/test-utils/lib/createJestRunner.js b/packages/@vuepress/test-utils/lib/createJestRunner.js
index 0456e0482b..56f57e8e8e 100644
--- a/packages/@vuepress/test-utils/lib/createJestRunner.js
+++ b/packages/@vuepress/test-utils/lib/createJestRunner.js
@@ -1,21 +1,27 @@
 const execa = require('execa')
-const rawArgs = process.argv.slice(2)
 
 const usedPorts = []
 
-module.exports = function createJestRunner (jestArgs) {
+/**
+ * Run jest
+ *
+ * @param {array} jestArgs an array of Jest CLI options
+ * @param {array} debug whether start with '--inspect-brk' or not
+ */
+
+module.exports = function createJestRunner (jestArgs, debug) {
   return async function () {
-    const execArgv = getChildProcesExecArgv()
-    const args = [...execArgv, ...jestArgs]
+    const execArgv = getChildProcessExecArgv()
+    const args = [require.resolve('jest-cli/bin/jest'), ...execArgv, ...jestArgs]
+    if (debug) args.unshift('--inspect-brk')
     console.log(`running node with args: ${args.join(' ')}`)
-    args.unshift(...rawArgs, require.resolve('jest-cli/bin/jest'))
     await execa('node', args, {
       stdio: 'inherit'
     })
   }
 }
 
-function getChildProcesExecArgv () {
+function getChildProcessExecArgv () {
   const execArgv = process.execArgv.slice(0)
   const inspectArgvIndex = execArgv.findIndex(argv =>
     argv.includes('--inspect-brk')
diff --git a/scripts/test.js b/scripts/test.js
index f5ee8cc981..686ba37e64 100644
--- a/scripts/test.js
+++ b/scripts/test.js
@@ -6,9 +6,11 @@ const rawArgs = process.argv.slice(2)
 const args = minimist(rawArgs)
 
 let regex
+const debug = !!args['inspect-brk']
+
 if (args.p) {
   const packages = (args.p || args.package).split(',').join('|')
-  regex = `.*@vuepress/(${packages}|plugin-(${packages}))/.*\\.spec\\.js$`
+  regex = `.*@vuepress/(${packages}|plugin-(${packages}))/.*\\.spec\\.(js|ts)$`
   const i = rawArgs.indexOf('-p')
   rawArgs.splice(i, 2)
 }
@@ -17,7 +19,7 @@ const jestRunner = createJestRunner([
   '--config', 'scripts/jest.config.js',
   '--runInBand',
   ...(regex ? [regex] : [])
-])
+], debug)
 
 // ensure the basic temp files were generated
 createApp({