10 features introduced in ES13,📣valuable for modern JavaScript development

#javascript #webdev #beginners #learning

1. Top-Level Await

You can now use await at the top level of a module, enabling asynchronous operations without wrapping them in an async function.

2. Class Fields and Static Initialization Blocks

Public and private class fields are now supported, along with static initialization blocks.

3. Private Methods and Accessors in Classes

You can define private methods and accessors using the # syntax.

4. Error Cause Property

The cause property in error objects allows you to pass an underlying error when throwing a new one.

5. Array `findLast` and `findLastIndex`

New methods findLast and findLastIndex search arrays from the end instead of the beginning.

6. Object.hasOwn

A new method to check for an object's own properties more reliably than Object.prototype.hasOwnProperty.

7. RegExp d Flag

The d flag allows you to get the index of the start of the match when using regular expressions.

8. Enhanced import.meta

import.meta provides metadata about the current module, which can now include environment-specific information.

9. Ergonomic Brand Checks for Private Fields

Improved syntax for checking if a class instance has a private field.

10. JSON Modules

Import JSON files directly as modules, making it easier to work with configuration data.

These features enhance the robustness, readability, and efficiency of modern JavaScript code, making ES13 a significant step forward for developers.

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