ES2017s

ECMAScript 2017, also known as ES2017, is a version of the ECMAScript programming language standard. It was officially published by Ecma International in June 2017. ES2017 introduced several new features and improvements to the JavaScript language, aiming to enhance developer productivity and provide more powerful tools for asynchronous programming and string manipulation.

Key additions in ES2017 include asynchronous functions, commonly referred to as async/await. This syntax provides a cleaner and more readable way to handle asynchronous operations, building upon Promises to simplify the management of callbacks and reduce callback hell. Another significant feature is the addition of Object.values() and Object.entries(), which allow developers to easily retrieve arrays of an object's values or its key-value pairs, respectively.

ES2017 also standardized String padding methods, namely String.prototype.padStart() and String.prototype.padEnd(). These methods enable developers to pad the beginning or end of a string with another string until it reaches a specified length. Additionally, the standard introduced the Object.prototype.trailingComma, which allows trailing commas in object literals and array literals, making code cleaner and easier to manage, especially in version control systems. These features were designed to be backward compatible and widely adopted by modern JavaScript engines.