public ChakraCoreTypeScriptTranspiler()
{
using var stream = typeof(ChakraCoreTypeScriptTranspiler).Assembly.GetManifestResourceStream(typeof(V8TypeScriptTranspiler), "typescriptServices.js");
using var reader = new StreamReader(stream);
var typescriptServicesSource = reader.ReadToEnd();
_runtime = JavaScriptRuntime.Create(JavaScriptRuntimeAttributes.None);
_context = JavaScriptContext.CreateContext(_runtime);
// Install the compiler in the context
using (var scope = _context.GetScope())
{
JavaScriptContext.RunScript(typescriptServicesSource);
}
}
public string Transpile(string input)
{
lock (this)
{
using (var scope = _context.GetScope())
{
var transpileFunction = JavaScriptContext.RunScript(@"
input => {
const result = ts.transpileModule(input, {
compilerOptions: {
target: ts.ScriptTarget.ES2015,
module: ts.ModuleKind.ES2015,
lib: [ 'ES2015' ]
}
});
return result.outputText;
}");
var outputText = transpileFunction.CallFunction(JavaScriptValue.GlobalObject, JavaScriptValue.FromString(input));
return(outputText.ToString());
}
}
}
public void AddPreload(string specifier, string code)
{
if (!RootModule.IsValid)
{
throw new InvalidOperationException("No root module set");
}
var module = JavaScriptModuleRecord.Initialize(RootModule, specifier);
module.HostUrl = specifier; // Only for debugging
_moduleLeases.Add(specifier, new ModuleLease(module));
_dispatcher.Invoke(() =>
{
using (_context.GetScope())
{
module.ParseSource(code);
}
});
}