function_types.js

function one() {console.log('one')}                // named function
one();

new Array([0]).forEach(function() {console.log('two')})     // anonymous function

const three = function() {console.log('three')};   // aliased anonymous function
three();

const container = {
    four: function() {console.log('four')},       // aliased anonymous function
    five: () => console.log('five'),              // aliased arrow function
    six() { console.log('six') },                 // named function
};

container.four();
container.five();
container.six();

const seven = () => console.log('seven');         // aliased arrow function
seven();

(function() {
    console.log('eight');
})();                                             // immediately invoked function expression

(() => console.log('nine'))();                    // immediately invoked arrow function expression