Modern Non-Mutating Methods and structuredClone

Description:
Update arrays and copy complex nested objects without unintended side effects using toReversed, toSorted, toSpliced, with, and structuredClone.

Chapters:
00:00 Intro
00:15 In-Place Mutation vs Safe Copying
00:39 In-Place Mutation vs Copy-on-Write
01:06 In-Place Mutators vs Change-by-Copy
01:31 Reversing Without Mutation: toReversed()
01:50 Sorting Without Mutation: toSorted()
02:11 Splicing Without Mutation: toSpliced()
02:34 Single Element Replacement: with()
02:57 Array Immutability Cheat Sheet
03:19 The Shallow Copy Boundary
03:45 Deep Cloning with structuredClone()
04:08 The JSON Serialization Trap
04:35 Cloning Functions Throws DataCloneError
04:57 Out-of-Bounds Indexing: with() vs Brackets
05:22 The Change-Array-by-Copy Specification
05:47 structuredClone Algorithm Boundaries
06:12 Four Core Principles for Immutability
06:41 Array with() Method Checkpoint
07:19 structuredClone Serialization Boundary Checkpoint
07:51 Next Up: Build It: Data Analytics & Report Generator