Below is my code and getting warnings as "Unable to assign type from data, so defaulting to string"
vm.usersGrid = {
enableRowSelection: true,
multiSelect: true,
data: "vm.users",
columnDefs: [
{field: 'id', visible: false, displayName: 'UserId'},
{field: 'email', displayName: 'User Name'},
{field: 'countries', displayName: 'Country'},
{field: 'status', displayName: 'Status'},
]
};