handler.ts

import fetch from 'node-fetch';

const BASE_URL = process.env.BASE_URL;

const post = (data = {}, url = '') => {
    return new Promise((resolve, reject) => {
        return fetch(BASE_URL + url, {
            method: 'post',
            body:    JSON.stringify(data),
            headers: { 'Content-Type': 'application/json' },
        })
            .then((res) => res.json())
            .then((json) => {
                resolve(json);
            })
            .catch((error) => {
                reject(error);
            })
    })
}

export default {
    createList: (data) => post(data, 'list/create'),
    getList: (data) => post(data, 'list'),
    updateList: (data) => post(data, 'list/update'),
    deleteList: (data) => post(data, 'list/delete'),
    createTask: (data) => post(data, 'task/create'),
    getTask: (data) => post(data, 'task'),
    updateTask: (data) => post(data, 'task/update'),
    deleteTask: (data) => post(data, 'task/delete'),
}