// Existing TypeScript compiler only; node:test remains the test runner. No runtime dependency.
const ts = require("typescript");
const fs = require("node:fs");
function compile(module, filename) {
  const result = ts.transpileModule(fs.readFileSync(filename, "utf8"), {
    compilerOptions: { module: ts.ModuleKind.CommonJS, target: ts.ScriptTarget.ES2022, jsx: ts.JsxEmit.ReactJSX, esModuleInterop: true }, fileName: filename,
  });
  module._compile(result.outputText, filename);
}
require.extensions[".ts"] = compile;
require.extensions[".tsx"] = compile;