Uses Propex to validate javascript objects

Allow parsing of jsx

Allow parsing of import.meta

Allow parsing of TypeScript syntax

Allow parsing of class properties

Allow parsing of optional properties

Allow parsing of decorators

Allow parsing of import()

Allow parsing of BigInt literals

Allow parsing of async generator functions

Allow parsing of optional catch bindings

Allow parsing of object rest/spread

Allow parsing of class static blocks

Allow parsing of the logical assignment operators

Allow parsing of the nullish-coalescing operator

Allow parsing of the flow syntax

Allow parsing of top-level await in modules

Allow parsing of export namespace from

Allow parsing of export default from

Allow parsing of '#foo in obj' brand checks