listObjectMethods.js

/**
 * @type: JavaScript
 * @todo Find all methods of an object
 */
const listMethods = obj => Object.getOwnPropertyNames(obj).filter(
    item => typeof obj[item] === 'function'
)

// example
const food = {
    title: 'Dumpling',
    rating: '4',
    taste: () => console.log('Tasty')
}
console.log(listMethods(food))

// References: https://flaviocopes.com/how-to-list-object-methods-javascript/