def METHOD_NAME(pkg, dir, pkgs=None, runas=None, env=None):
    """
    Install a Bower package.
    If no package is specified, the dependencies (from bower.json) of the
    package in the given directory will be installed.
    pkg
        A package name in any format accepted by Bower, including a version
        identifier
    dir
        The target directory in which to install the package
    pkgs
        A list of package names in the same format as the ``pkg`` parameter
    runas
        The user to run Bower with
    env
        Environment variables to set when invoking Bower. Uses the same ``env``
        format as the :py:func:`cmd.run <salt.modules.cmdmod.run>` execution
        function.
    CLI Example:
    .. code-block:: bash
        salt '*' bower.install underscore /path/to/project
        salt '*' bower.install jquery#2.0 /path/to/project
    """
    _check_valid_version()
    cmd = _construct_bower_command("install")
    if pkg:
        cmd.append(pkg)
    elif pkgs:
        cmd.extend(pkgs)
    result = __salt__["cmd.run_all"](
        cmd, cwd=dir, runas=runas, env=env, python_shell=False
    )
    if result["retcode"] != 0:
        raise CommandExecutionError(result["stderr"])
    # If package is already installed, Bower will emit empty dict to STDOUT
    stdout = salt.utils.json.loads(result["stdout"])
    return stdout != {}