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Engine, Language, REPL: document DrainMicroTasks; async arrows; for-of destructuring
Language: async arrow functions; for-of destructuring
String literal \u escapes Document \uXXXX (ES5) and \u{...} (ES2015) escape sequences in Language.md.
Fix private field syntax and add void/comma to operators table
Strict mode phase 7: block-scoped function declarations
Async generators and for await...of (ES2018)
arguments object
Tagged template literals and String.raw
RegExp enhancements — named captures, lookahead/lookbehind, dotAll flag, matchAll
Property descriptors and the Object API - Language.md: getter/setter syntax in object literals and class bodies; method shorthand - Standard-Library.md: full Object API coverage — defineProperty, getOwnPropertyDescriptor, getPrototypeOf/setPrototypeOf, freeze/seal/preventExtensions
Proxy and Reflect — API reference and Language.md
BigInt — literals, arithmetic, typeof, BigInt() factory
Top-level await (ES2022)
Private class fields and methods (ES2022)
Static initialisation blocks — document static { } syntax
Symbol — document Symbol type, well-known symbols, typeof, iterator example
Numeric separators — document _ in integer, float, hex, binary, octal literals
globalThis
Logical assignment operators (&&=, ||=, ??=)
Add full documentation — engine, language, standard library, REPL, permissions, resource limits, host objects, modules, debugger, bytecode