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PackageToJS: Add hint for missing .enableExperimentalFeature("Extern") setting #364

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merged 1 commit into from
Jun 5, 2025
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PackageToJS: Add hint for missing .enableExperimentalFeature("Extern") setting #364

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21 changes: 21 additions & 0 deletions Plugins/PackageToJS/Sources/PackageToJSPlugin.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -71,6 +71,27 @@ struct PackageToJSPlugin: CommandPlugin {
See https://book.swiftwasm.org/getting-started/setup.html for more information.
"""
}),
(
// In case the SwiftPM target using BridgeJS didn't specify `.enableExperimentalFeature("Extern")`
{ build, arguments in
guard
build.logText.contains("@_extern requires '-enable-experimental-feature Extern'")
else {
return nil
}
return """
The SwiftPM target using BridgeJS didn't specify `.enableExperimentalFeature("Extern")`.
Please add it to the target's `swiftSettings` configuration.

For example:
```swift
dependencies: [...],
swiftSettings: [
.enableExperimentalFeature("Extern"),
]
```
"""
}),
]

private func emitHintMessage(_ message: String) {
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