How to use the fabric-shim.Shim.start function in fabric-shim

/*
 * <%= spdxAndLicense // SPDX-License-Identifier: Apache-2.0 %>
 */

import { Shim } from 'fabric-shim';
import { Chaincode } from '.';

Shim.start(new Chaincode());

/*
 * <%= spdxAndLicense // SPDX-License-Identifier: Apache-2.0 %>
 */

'use strict';

const { Shim } = require('fabric-shim');
const { Chaincode } = require('..');

Shim.start(new Chaincode());

type = cHdr.getType();
        let version: number = cHdr.version;
        version = cHdr.getVersion();

        let creator: SerializedIdentity = sHdr.creator;
        creator = sHdr.getCreator();
        let nonce: Buffer = sHdr.nonce;
        nonce = sHdr.getNonce();

        let input: Buffer = payload.input;
        input = payload.getInput();
        let map: Map = payload.transientMap;
        map = payload.getTransientMap();
    }
}
Shim.start(new TestTS());