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Use [[Set]] by default, add `define` keyword. (was: TypeScript class fields have [[Set]] semantics.) Β· Issue #248 Β· tc39/proposal-class-fields Β· GitHub
Use [[Set]] by default, add

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Use [[Set]] by default, add define
keyword. (was: TypeScript class fields have [[Set]] semantics.)Β #248
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Description
Class-fields in TypeScript have [[Set]]
semantics. Foresee code breaking when JavaScript projects convert to TypeScript (or vice versa), and the pain caused from hard-to-find bugs, because of JavaScript class-fields using [[Define]]
semantics.
I know this has been discussed in other threads, but I thought I'd open an official issue for it.
EDIT: Why not add a define
keyword:
class Foo {
foo = 'foo' // uses [[Set]] semantics
define bar = 'bar' // uses [[Define]] semantics
}
Honestly, it would make most people (talking about end users who develop products, not language designers or implementors) happy.
amio, Splaktar, hcwhan, nexussays, tam5 and 3 more
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