wiki/content/20201113111815-es2019.md

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---
date: 20201113
id: 7aa626ee-1b0b-4d7c-8e11-751f8b9cac1f
title: ES2019
---
# Array
## Prototype methods
- [Array.prototype.flatMap()](20201113112058-array_prototype_flatmap)
- [Array.prototype.flat()](20201113112029-array_prototype_flat)
### Sort
- [.sort() is guaranteed to be
stable](20201116155810-sort_is_guaranteed_to_be_stable)
# Control flow
- [Optional Catch
Binding](20201116154824-javascript_optional_catch_binding)
# Objects
## Functions
- [Object.fromEntries](20201116095124-object_fromentries)
# Strings
## String Prototype methods
- [trimStart](20201116100205-trimstart)
- [trimEnd](20201116100239-trimend)
# Symbols
## Symbol Prototype methods
- [Symbol.prototype.description](20201116101509-symbol_prototype_description)