How to use the @accordproject/ergo-engine/index.browser.js.EvalEngine function in @accordproject/ergo-engine

async function runInit(logicManager, contract) {
  const engine = new EvalEngine();
  const response = await engine.init(logicManager, 'test', contract, {}, moment().format());
  return response;
}

constructor(template) {
        if (this.constructor === TemplateInstance) {
            throw new TypeError('Abstract class "TemplateInstance" cannot be instantiated directly.');
        }
        this.template = template;
        this.data = null;
        this.concertoData = null;
        this.ergoEngine = new ErgoEngine();
    }

async function runLogic(logicManager, contract, request, cstate) {
  const engine = new EvalEngine();
  const result = await engine.trigger(logicManager, 'test', contract, request, cstate, moment().format());
  return result;
}