How to use the echarts.dataTool function in echarts

import * as echarts from 'echarts';
import * as gexf from './gexf';
import prepareBoxplotData from './prepareBoxplotData';

export var version = '1.0.0';

export {gexf};

export {prepareBoxplotData};

// For backward compatibility, where the namespace `dataTool` will
// be mounted on `echarts` is the extension `dataTool` is imported.
// But the old version of echarts do not have `dataTool` namespace,
// so check it before mounting.
if (echarts.dataTool) {
    echarts.dataTool.version = version;
    echarts.dataTool.gexf = gexf;
    echarts.dataTool.prepareBoxplotData = prepareBoxplotData;
}

* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied.  See the License for the
* specific language governing permissions and limitations
* under the License.
*/
var version = '1.0.0';

// For backward compatibility, where the namespace `dataTool` will
// be mounted on `echarts` is the extension `dataTool` is imported.
// But the old version of echarts do not have `dataTool` namespace,
// so check it before mounting.
if (echarts.dataTool) {
  echarts.dataTool.version = version;
  echarts.dataTool.gexf = gexf;
  echarts.dataTool.prepareBoxplotData = prepareBoxplotData;
}

exports.version = version;

import prepareBoxplotData from './prepareBoxplotData';

export var version = '1.0.0';

export {gexf};

export {prepareBoxplotData};

// For backward compatibility, where the namespace `dataTool` will
// be mounted on `echarts` is the extension `dataTool` is imported.
// But the old version of echarts do not have `dataTool` namespace,
// so check it before mounting.
if (echarts.dataTool) {
    echarts.dataTool.version = version;
    echarts.dataTool.gexf = gexf;
    echarts.dataTool.prepareBoxplotData = prepareBoxplotData;
}

*   http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied.  See the License for the
* specific language governing permissions and limitations
* under the License.
*/
var version = '1.0.0';

// For backward compatibility, where the namespace `dataTool` will
// be mounted on `echarts` is the extension `dataTool` is imported.
// But the old version of echarts do not have `dataTool` namespace,
// so check it before mounting.
if (echarts.dataTool) {
  echarts.dataTool.version = version;
  echarts.dataTool.gexf = gexf;
  echarts.dataTool.prepareBoxplotData = prepareBoxplotData;
}

exports.version = version;

import * as gexf from './gexf';
import prepareBoxplotData from './prepareBoxplotData';

export var version = '1.0.0';

export {gexf};

export {prepareBoxplotData};

// For backward compatibility, where the namespace `dataTool` will
// be mounted on `echarts` is the extension `dataTool` is imported.
// But the old version of echarts do not have `dataTool` namespace,
// so check it before mounting.
if (echarts.dataTool) {
    echarts.dataTool.version = version;
    echarts.dataTool.gexf = gexf;
    echarts.dataTool.prepareBoxplotData = prepareBoxplotData;
}

*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied.  See the License for the
* specific language governing permissions and limitations
* under the License.
*/
var version = '1.0.0';

// For backward compatibility, where the namespace `dataTool` will
// be mounted on `echarts` is the extension `dataTool` is imported.
// But the old version of echarts do not have `dataTool` namespace,
// so check it before mounting.
if (echarts.dataTool) {
  echarts.dataTool.version = version;
  echarts.dataTool.gexf = gexf;
  echarts.dataTool.prepareBoxplotData = prepareBoxplotData;
}

exports.version = version;

import * as echarts from 'echarts';
import * as gexf from './gexf';
import prepareBoxplotData from './prepareBoxplotData';

export var version = '1.0.0';

export {gexf};

export {prepareBoxplotData};

// For backward compatibility, where the namespace `dataTool` will
// be mounted on `echarts` is the extension `dataTool` is imported.
// But the old version of echarts do not have `dataTool` namespace,
// so check it before mounting.
if (echarts.dataTool) {
    echarts.dataTool.version = version;
    echarts.dataTool.gexf = gexf;
    echarts.dataTool.prepareBoxplotData = prepareBoxplotData;
}

define(function (require) {
    var echarts = require('echarts');
    echarts.dataTool = {
        version: '1.0.0',
        gexf: require('./gexf'),
        prepareBoxplotData: require('./prepareBoxplotData')
    };
    return echarts.dataTool;
});

define(function (require) {
    var echarts = require('echarts');
    echarts.dataTool = {
        version: '1.0.0',
        gexf: require('./gexf'),
        prepareBoxplotData: require('./prepareBoxplotData')
    };
    return echarts.dataTool;
});

define(function (require) {
    var echarts = require('echarts');
    echarts.dataTool = {
        version: '1.0.0',
        gexf: require('./gexf'),
        prepareBoxplotData: require('./prepareBoxplotData')
    };
    return echarts.dataTool;
});