[anentropic]

is/was Javascript open source?

what matters is the platform

no one cared if Javascript the language was open source when it was the only way to do client side scripting for web pages.

similarly Swift has iOS and OSX - other languages are available on these but I guess developers are anticipating Apple emphasising Swift over Objective-C going forward

[danford]

Well it's hard to say that JS had this much attention in 1995. Let's give swift 20 years and see where it takes us?