Immutability

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A. Ghafoor Sayyed August 7, 2025 5 min read Posts Section
Modern JavaScript Object Features — Descriptors, Immutability, Symbols, and Iterators
Modern JavaScript Object Features — Descriptors, Immutability, Symbols, and Iterators
Programming Languages JavaScript Javascript Objects Immutability Symbols Iterators
A reference tour of the modern object surface — property descriptors, Object.freeze / seal / preventExtensions, Symbol-keyed properties and well-known symbols, the iterable protocol, structuredClone, Object.groupBy, and proxies.
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