Compile `using` and `await using` declarations to ES2015

Transform hast properties into mdxJsxAttribute nodes

Compile regular expressions using the `s` (`dotAll`) flag to ES5.

Mark top-level React method calls as pure for tree shaking

This transformer wraps all typeof expressions with a method that replicates native behaviour. (ie. returning “symbol” for symbols)

Escape U+2028 LINE SEPARATOR and U+2029 PARAGRAPH SEPARATOR in JS strings

Compile regular expressions' unicodeSets (v) flag.

Externalise references to helpers and builtins, automatically polyfilling your code without polluting globals

SCSS parser for PostCSS

Add displayName to React.createClass calls

Node.js compression middleware

Turn JSX into React function calls in development

Compile regular expressions using duplicate named groups to index-based groups.

Transform style sheet to be consumed by the LWC engine

Strip flow type annotations from your output code.

Merge keyframe and counter style identifiers.

Parse postgres array columns

Tiny utilities for inserting transformation logic into Node.js stream and Web Streams pipelines

ProseMirror document transformations

Blazing fast input validation and transformation ⚡