import {  AppConfigDataClient,  BadRequestException,  GetLatestConfigurationCommand,  StartConfigurationSessionCommand,} from "@aws-sdk/client-appconfigdata";const client = new AppConfigDataClient({});let existingToken: string;const getToken = async (): Promise<string> => {  const getSession = new StartConfigurationSessionCommand({    ApplicationIdentifier: process.env.APP_CONFIG_APP_IDENTIFIER,    ConfigurationProfileIdentifier:      process.env.APP_CONFIG_CONFIG_PROFILE_IDENTIFIER,    EnvironmentIdentifier: process.env.APP_CONFIG_ENVIRONMENT_IDENTIFIER,  });  const sessionToken = await client.send(getSession);  return sessionToken.InitialConfigurationToken || "";};const featureFlag = async (flag: string): Promise<boolean> => {  if (!existingToken) {    existingToken = await getToken();    console.log(existingToken);  }  try {    const command = new GetLatestConfigurationCommand({      ConfigurationToken: existingToken,    });    const response = await client.send(command);    let flags: any = {};    if (response.Configuration) {      let str = "";      for (let i = 0; i < response.Configuration.length; i++) {        str += String.fromCharCode(response.Configuration[i]);      }      const allFlag = JSON.parse(str);      console.log(allFlag);      flags = Object.assign({}, allFlag);    }    return Boolean(flags[flag]?.enabled);  } catch (err) {    if (err instanceof BadRequestException) {      existingToken = await getToken();      console.log(existingToken);      // recall      return featureFlag(flag);    } else {      throw err;    }  }};export default featureFlag;

import featureFlag from '@berviantoleo/feature-flag';featureFlag('try_feature_flag').then((result) => {  console.log(result);});