promise-refactor.js

const handleSaveRole = async () => {
  // ...
  if (role.id) {
    return api.getRolePermissions(state.jwt, role)
      .then(response => api.deleteRolePermissions(state.jwt, response.data.items))
      .then(() => api.addRolePermissionsToRole(state.jwt, role, state.roles))
      .then(() => {
        dispatch(["EDIT_ROLE", role]);
        toast.success("Role saved.");
        return role;
      });
  }
  // ...
}