This function was used to check the compatibility between the JavaScriptKit
Swift library and JS runtime because they were manually kept in sync by
users of the library with npm and SwiftPM. Now that the library is
distributed as a single SwiftPM package, there is no need for this
function.

We now support only Swift 6.0 and above, so we can use `@_expose(wasm)`
instead of `__attribute__((export_name))` and `@_cdecl` hack.

PackageToJS: Emit hints for permission denied errors

This change makes `JSObject.id` getter inlinable. Those who use the API
to avoid dynamic member lookup overhead can now benefit from the
inlinable getter.

Make `JSObject.id` getter inlinable

Use `@_expose(wasm)` instead of `__attribute__((export_name))` and `@_cdecl` hack

This reverts commit 1de7acc, reversing
changes made to e36e93c.

And use it to control the verbosity of the build process.

PackageToJS: Generalize `--verbose` flag to all commands