Ensure that no reserved words are used.

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

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

This plugin transforms checks for a private property in an object

Compile objects with duplicate keys to valid strict ES5

Compile export namespace to ES2015

Compile optional catch bindings

Ensure that reserved words are quoted in property accesses

Turn JSX into React function calls

Compile regular expressions' unicodeSets (v) flag.

Compile inline regular expression modifiers

Transforms logical assignment operators into short-circuited assignments

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

Turn JSX into React function calls in development

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

Compile Unicode property escapes in Unicode regular expressions to ES5.

Add displayName to React.createClass calls

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

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

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