You Won't Believe This One Weird Way to Rewrite Closures
summary
Claims a full rewrite of closures using only JavaScript primitives and one global variable and proves it with tests and a working transpiler, implementing replacement primitives S/G/F, a closure registry, forked scope objects via prototypal inheritance, push/pop contexts, an args helper and amnesic function bodies, all composed into about 70 lines that pass specs and transpile examples online, yielding a functioning alternative to native lexical closures and a demo that actually executes and returns the expected values.
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chapters (10)
- 0:00Introduction and context
- 1:10Critique of closures
- 3:32Defining the polyfill rules
- 6:15Substitution strategy
- 7:29Implementing global context
- 10:15Push and pop mechanics
- 16:03Function helper definition
- 19:33Lexical scope challenges
- 21:59Building the closure registry
- 30:50Conclusion and future plans
