Function warnOnNonPortableTemplate

lib/internal/fs/utils.js:886–896

(template)

let nonPortableTemplateWarn = true;

function warnOnNonPortableTemplate(template) {
  // Template strings passed to the mkdtemp() family of functions should not
  // end with 'X' because they are handled inconsistently across platforms.
  if (nonPortableTemplateWarn &&
    ((typeof template === 'string' && StringPrototypeEndsWith(template, 'X')) ||
    (typeof template !== 'string' && TypedArrayPrototypeAt(template, -1) === 0x58))) {
    process.emitWarning('mkdtemp() templates ending with X are not portable. ' +
                        'For details see: https://nodejs.org/api/fs.html');
    nonPortableTemplateWarn = false;
  }
}

const defaultCpOptions = {
  dereference: false,