Chapter 14. Metaprogramming
14.1 Property Attributes
14.2 Object Extensibility
14.3 The prototype Attribute
14.4 Well-Known Symbols
14.4.1 Symbol.iterator and Symbol.asyncIterator
14.4.2 Symbol.hasInstance
14.4.3 Symbol.toStringTag
14.4.4 Symbol.species
14.4.5 Symbol.isConcatSpreadable
14.4.6 Pattern-Matching Symbols
14.4.7 Symbol.toPrimitive
14.4.8 Symbol.unscopables
14.5 Template Tags
14.6 The Reflect API
14.7 Proxy Objects
14.7.1 Proxy Invariants