How to use the prosemirror-commands.baseKeymap function in prosemirror-commands

orderedListRule = _require.orderedListRule,
    bulletListRule = _require.bulletListRule,
    codeBlockRule = _require.codeBlockRule,
    headingRule = _require.headingRule,
    inputRules = _require.inputRules,
    allInputRules = _require.allInputRules,
    InputRule = _require.InputRule;

var _require2 = require('prosemirror-keymap'),
    keymap = _require2.keymap;

var _require3 = require('prosemirror-history'),
    history = _require3.history;

var _require4 = require('prosemirror-commands'),
    baseKeymap = _require4.baseKeymap;

var _require5 = require('prosemirror-state'),
    Plugin = _require5.Plugin;

var _require6 = require('./menu-config'),
    buildMenuItems = _require6.buildMenuItems;

exports.buildMenuItems = buildMenuItems;

var _require7 = require('./keymap'),
    buildKeymap = _require7.buildKeymap;

exports.buildKeymap = buildKeymap;

function pubpubSetup(options) {
	var deps = [inputRules({ rules: allInputRules.concat(buildInputRules(options.schema)) }), keymap(buildKeymap(options.schema, options.mapKeys)), keymap(baseKeymap)];