Spread syntax (...)
The spread (...) syntax allows an iterable, such as an array or string, to be expanded in places where zero or more arguments (for function calls) or elements (for array literals) are expected. In an object literal, the spread syntax enumerates the properties of an object and adds the key-value pairs to the object being created.
Destructuring
The destructuring syntax is a JavaScript syntax that makes it possible to unpack values from arrays, or properties from objects, into distinct variables. It can be used in locations that receive data (such as the left-hand side of an assignment or anywhere that creates new identifier bindings).
Optional chaining (?.)
The optional chaining (?.) operator accesses an object's property or calls a function. If the object accessed or function called using this operator is undefined or null, the expression short circuits and evaluates to undefined instead of throwing an error.
map()
The map() method of Array instances creates a new array populated with the results of calling a provided function on every element in the calling array.
Set
The Set object lets you store unique values of any type, whether primitive values or object references.
Promise.try
The Promise.try() static method takes a callback of any kind (returns or throws, synchronously or asynchronously) and wraps its result in a Promise.
Symbol.dispose
The Symbol.dispose static data property represents the well-known symbol Symbol.dispose. The using declaration looks up this symbol on the variable initializer for the method to call when the variable goes out of scope.
console.table()
The console.table() static method displays tabular data as a table.
