# Buggy code
def bootstrap(name, runas=None, user=None):
    """
    Bootstraps a node.js application.

    will execute npm install --json on the specified directory


    runas
        The user to run NPM with

        .. deprecated:: 0.17.0

    user
        The user to run NPM with

        .. versionadded:: 0.17.0


    """
    ret = {"name": name, "result": None, "comment": "", "changes": {}}
    salt.utils.warn_until(
        (0, 18),
        "Please remove 'runas' support at this stage. 'user' support was "
        "added in 0.17.0",
        _dont_call_warnings=True,
    )
    if runas:
        # Warn users about the deprecation
        ret.setdefault("warnings", []).append(
            "The 'runas' argument is being deprecated in favor or 'user', "
            "please update your state files."
        )
    if user is not None and runas is not None:
        # user wins over runas but let warn about the deprecation.
        ret.setdefault("warnings", []).append(
            "Passed both the 'runas' and 'user' arguments. Please don't. "
            "'runas' is being ignored in favor of 'user'."
        )
        runas = None
    elif runas is not None:
        # Support old runas usage
        user = runas
        runas = None

    try:
        call = __salt__["npm.install"](dir=name, runas=user, pkg=None)
    except (CommandNotFoundError, CommandExecutionError) as err:
        ret["result"] = False
        ret["comment"] = "Error Bootstrapping '{0}': {1}".format(name, err)
        return ret

    # npm.install will return a string if it can't parse a JSON result
    if isinstance(call, str):
        ret["result"] = False
        ret["comment"] = "Could not bootstrap directory"
    else:
        ret["result"] = True
        ret["changes"] = name, "Bootstrapped"
        ret["comment"] = "Directory was successfully bootstrapped"

    return ret


# Traceback (AttributeError)
[ERROR   ] Error in function _master_opts:
Traceback (most recent call last):
File "/usr/lib/pymodules/python2.7/salt/master.py", line 1444, in run_func
ret = getattr(self, func)(load)
File "/usr/lib/pymodules/python2.7/salt/master.py", line 891, in _master_opts
envs = self._file_envs()
File "/usr/lib/pymodules/python2.7/salt/fileserver/__init__.py", line 153, in envs
ret.update(self.servers[fstr]())
File "/usr/lib/pymodules/python2.7/salt/fileserver/hgfs.py", line 176, in envs
tags = repo.get_tags()
AttributeError: 'hgclient' object has no attribute 'get_tags'

# Fixed code
def bootstrap(name, runas=None, user=None):
    """
    Bootstraps a node.js application.

    will execute npm install --json on the specified directory


    runas
        The user to run NPM with

        .. deprecated:: 0.17.0

    user
        The user to run NPM with

        .. versionadded:: 0.17.0


    """
    ret = {"name": name, "result": None, "comment": "", "changes": {}}
    salt.utils.warn_until(
        "Hydrogen",
        "Please remove 'runas' support at this stage. 'user' support was "
        "added in 0.17.0",
        _dont_call_warnings=True,
    )
    if runas:
        # Warn users about the deprecation
        ret.setdefault("warnings", []).append(
            "The 'runas' argument is being deprecated in favor or 'user', "
            "please update your state files."
        )
    if user is not None and runas is not None:
        # user wins over runas but let warn about the deprecation.
        ret.setdefault("warnings", []).append(
            "Passed both the 'runas' and 'user' arguments. Please don't. "
            "'runas' is being ignored in favor of 'user'."
        )
        runas = None
    elif runas is not None:
        # Support old runas usage
        user = runas
        runas = None

    try:
        call = __salt__["npm.install"](dir=name, runas=user, pkg=None)
    except (CommandNotFoundError, CommandExecutionError) as err:
        ret["result"] = False
        ret["comment"] = "Error Bootstrapping '{0}': {1}".format(name, err)
        return ret

    # npm.install will return a string if it can't parse a JSON result
    if isinstance(call, str):
        ret["result"] = False
        ret["comment"] = "Could not bootstrap directory"
    else:
        ret["result"] = True
        ret["changes"] = name, "Bootstrapped"
        ret["comment"] = "Directory was successfully bootstrapped"

    return ret