AWS lambda + Javascript Callback

AWS lambda 환경에서 callback function의 처리가 온전하지 않을 수 있다.

promise-based function

import Mixpanel from 'mixpanel';

const mixpanel = Mixpanel.init('<TOKEN>');

async function track(event: string, properties: any = {}) {
    return new Promise((resolve, reject) => {
        mixpanel.track(event, properties, (error, result) => {
            if (error) {
                reject(error);
            } else {
                resolve(result);
            }
        });
    });
}

Using util.promisify

import util from 'util';
import Mixpanel from 'mixpanel';

const mixpanel = Mixpanel.init('<TOKEN>');
const trackAsync = util.promisify(mixpanel.track);

track(event: string, properties: any = {}) {
    return trackAsync(event, properties);
}

참고)

• https://dev.to/mohie93/event-tracking-with-mixpanel-and-nodejs-je6
• https://byby.dev/node-promisify
• https://nodejs.org/dist/latest-v18.x/docs/api/util.html#utilpromisifyoriginal