oxc/tasks/transform_conformance

Transformer

Legend:

• [Syntax] means this is a syntax plugin, no code is required because it is supported by the parser.
• [Regex] means this is a regex transform, which is not supported.
• [Codegen] means the code generator is responsible for the feature.

Target

From @babel/preset-env.

ES2024

• [Regex] unicode-sets-regex

ES2023

Does not have any features.

ES2022

• class-properties
• class-static-block
• private-methods
• private-property-in-object
• [Syntax] syntax-top-level-await

ES2021

• logical-assignment-operators
• [Syntax] numeric-separator

ES2020

• dynamic-import
• export-namespace-from
• nullish-coalescing-operator
• optional-chaining
• [Syntax] syntax-bigint
• [Syntax] syntax-dynamic-import
• [Syntax] syntax-import-meta

ES2019

• optional-catch-binding
• [Codegen] json-strings

ES2018

• async-generator-functions
• object-rest-spread
• [Regex] unicode-property-regex
• [Regex] dotall-regex
• [Regex] named-capturing-groups-regex

ES2017

• async-to-generator

ES2016

• exponentiation-operator

ES2015

• arrow-functions
• block-scoping
• classes
• computed-properties
• destructuring
• duplicate-keys
• for-of
• function-name
• instanceof
• literals
• new-target
• object-super
• parameters
• shorthand-properties
• spread
• sticky-regex
• template-literals
• typeof-symbol
• [Regex] unicode-escapes
• [Regex] unicode-regex