/// <summary>
/// Loads any user-provided scripts. Only scripts that don't need JSX transformation can
/// run immediately here. JSX files are loaded in ReactEnvironment.
/// </summary>
/// <param name="engine">Engine to load scripts into</param>
private void LoadUserScripts(IJsEngine engine)
{
if (_config.ReactAppBuildPath != null)
{
var manifest = ReactAppAssetManifest.LoadManifest(_config, _fileSystem, _cache, useCacheRead: false);
foreach (var file in manifest.Entrypoints?.Where(x => x != null && x.EndsWith(".js")))
{
if (_config.AllowJavaScriptPrecompilation &&
engine.TryExecuteFileWithPrecompilation(_cache, _fileSystem, file))
{
// Do nothing.
}
else
{
engine.ExecuteFile(_fileSystem, file);
}
}
}
foreach (var file in _config.ScriptsWithoutTransform)
{
try
{
if (_config.AllowJavaScriptPrecompilation &&
engine.TryExecuteFileWithPrecompilation(_cache, _fileSystem, file))
{
// Do nothing.
}
else
{
engine.ExecuteFile(_fileSystem, file);
}
}
catch (JsException ex)
{
// We can't simply rethrow the exception here, as it's possible this is running
// on a background thread (ie. as a response to a file changing). If we did
// throw the exception here, it would terminate the entire process. Instead,
// save the exception, and then just rethrow it later when getting the engine.
_scriptLoadException = new ReactScriptLoadException(string.Format(
"Error while loading \"{0}\": {1}",
file,
ex.Message
), ex);
}
catch (IOException ex)
{
_scriptLoadException = new ReactScriptLoadException(ex.Message, ex);
}
}
}
private ReactAppAssetManifest GetAppManifest() => ReactAppAssetManifest.LoadManifest(_config, _fileSystem, _cache, useCacheRead: true);