Function watchFiles

scripts/experimental/swiftui-preview.mjs:1118–1126

(files, callback)

}

function watchFiles(files, callback) {
  let timer = null;
  for (const file of files) {
    fs.watchFile(file, { interval: 250 }, () => {
      clearTimeout(timer);
      timer = setTimeout(callback, 120);
    });
  }
}

function payloadWrapperSource(previewBody, moduleName, sourceModuleName) {
  return `import SwiftUI