Supported Features

What is supported

Strict directive
Primitives
Arrays
Set, Map
Math
try / catch
Error and variants
Stack traces (including Error.captureStackTrace)
Promises
Functions / Arrow functions
Async Functions
Generator functions
Async generator functions
Top-level await
Symbols (including engine behavior)
- Symbol.iterator
- Symbol.hasInstance
- Symbol.species
- Symbol.isConcatSpreadable
- Symbol.toPrimitive
- Symbol.unscopables
- Symbol.toStringTag
Control flow / loops
Unary and binary operators
Optional call expressions
Destructuring
Optional member expressions
Spread operators (including Symbol.iterator usage)
eval / Function constructor.
Classes
- Private names
Proxy
ECMAScript Modules
- Async modules
- Exports
- Importing from host-defined modules
- Importing from sandboxed modules