Changing import to dynamic import

Could someone help me on rewriting below code to overcome the webpack issue.

Webpack issue Using externals as script generate unexpected code #12465

---

call-to-actions.ts

import { CallToActions as CallToActionsDb } from 'CallToActions.db';

//interface => ICallToAction
export interface ICallToAction {
    id: string;
    text: string;
    urlScheme: string;
}

//const => CallToActions
const CallToActions: Array<ICallToAction> = CallToActionsDb as Array<ICallToAction>;

//class => CallToActionUtil
export class CallToActionUtil {
    static toOptions(): Array<any> {

        let dropdownOptions: Array<any> = new Array<any>();

        for (let i = 0; i < CallToActions.length; i++) {
            let callToAction: ICallToAction = CallToActions[i];

            dropdownOptions.push({
                id: callToAction.id,
                text: callToAction.text,
                callToAction: callToAction
            });
        }

        return dropdownOptions;
    }
}

---

webpack.config

externals: {
'CallToActions.db': ['http://...', 'EsvTwBDKDf']
}