* Refactor js-binding to support bundling single-package artifacts
The existsSync check breaks the bundlers I've tested (esbuild, webpack,
ncc), so you cannot bundle napi-rs packages that have all binarys in a
single package.
I've tested this change with both single package and multi package
libraries.
* Update snapshots
* Update CI
* Fix electron test
---------
Co-authored-by: Caleb ツ Everett <calebev@amazon.com>
Co-authored-by: LongYinan <lynweklm@gmail.com>
And recreate it if it does not exist.
In windows, electron renderer process will crash if:
1. Import some NAPI module that enable `tokio-rt` flag in renderer process.
2. Reload the page.
3. Call a function imported from that NAPI module.
Because the tokio runtime will be dropped when reloading the page, and won't create again, but currently we assume that the runtime must exist in tokio-based `within_runtime_if_available`.
This will cause some panic like this:
```
thread '<unnamed>' panicked at 'called `Option::unwrap()` on a `None` value', napi-rs\crates\napi\src\tokio_runtime.rs:72:42
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
Error: Renderer process crashed: crashed, exitCode: -529697949
at EventEmitter.<anonymous> (napi-rs\examples\napi\electron.js:33:9)
at EventEmitter.emit (node:events:525:35)
```
