try {

  regeneratorRuntime = runtime;

} catch (accidentalStrictMode) {

  // This module should not be running in strict mode, so the above

  // assignment should always work unless something is misconfigured. Just

  // in case runtime.js accidentally runs in strict mode, we can escape

  // strict mode using a global Function call. This could conceivably fail

  // if a Content Security Policy forbids using Function, but in that case

  // the proper solution is to fix the accidental strict mode problem. If

  // you've misconfigured your bundler to force strict mode and applied a

  // CSP to forbid Function, and you're not willing to fix either of those

  // problems, please detail your unique predicament in a GitHub issue.

  Function("r", "regeneratorRuntime = r")(runtime);

}