@jsenv/runtime-compat/src/browser_default_runtime_compat.js

// default runtimeCompat corresponds to
// "we can keep <script type="module"> intact":
// so script_type_module + dynamic_import + import_meta
export const browserDefaultRuntimeCompat = {
  // android: "8",
  chrome: "64",
  edge: "79",
  firefox: "67",
  ios: "12",
  opera: "51",
  safari: "11.3",
  samsung: "9.2",
};