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ecma

_darfts

types

1.language-feature

arrow-function

class

decorator

decorator

destructuring

generator

iterator

label-statement

loop

module

operator

semicolons

scope

template-string

try-catch

type

2.object

Array

Date

timeformat

Error

Function

Map

Number

Object

Proxy

Reflect

Regexp

Set

String

Symbol

WeakSet

gc

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