Add missing declarations

Signed-off-by: ArkaSaha30 <[email protected]>

pkg/expect/expect.go

@@ -33,15 +33,21 @@ import (
 
 const DEBUG_LINES_TAIL = 40
 
+var (
+	ErrProcessRunning = fmt.Errorf("process is still running")
+)
+
 type ExpectProcess struct {
 	cmd  *exec.Cmd
 	fpty *os.File
 	wg   sync.WaitGroup
 
-	mu    sync.Mutex // protects lines and err
-	lines []string
-	count int // increment whenever new line gets added
-	err   error
+	mu       sync.Mutex // protects lines and err
+	lines    []string
+	count    int // increment whenever new line gets added
+	err      error
+	exitErr  error // process exit error
+	exitCode int
 
 	// StopSignal is the signal Stop sends to the process; defaults to SIGKILL.
 	StopSignal os.Signal