RFC Implementation: Unify JSFunction and JSObject for consistent type system #1661

Job	Run time
format	32s
check-bridgejs-generated	6m 0s
Build for native target (macos-15, Xcode_16.4)	34s
Build and Test (ubuntu-22.04, https://download.swift.org/development/ubuntu2204/swift-DEVELOPMENT...	37m 4s
Build and Test (ubuntu-22.04, https://download.swift.org/swift-6.0.2-release/ubuntu2204/swift-6.0...	4m 42s
Build and Test (ubuntu-22.04, https://download.swift.org/development/ubuntu2204/swift-DEVELOPMENT...	6m 34s
Build and Test (ubuntu-22.04, https://download.swift.org/swift-6.1-release/ubuntu2204/swift-6.1-R...	5m 13s
build-examples	11m 55s
deploy-examples	0s
	1h 12m 34s

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