Function normalizeStderr

test/utils/test-utils.js:273–320

(stderr)

const IPV6 = /([0-9a-f]){1,4}(:([0-9a-f]){1,4}){7}/gi;

const normalizeStderr = (stderr) => {
  if (typeof stderr !== "string") {
    return stderr;
  }

  if (stderr.length === 0) {
    return stderr;
  }

  let normalizedStderr = stripVTControlCharacters(stderr);
  normalizedStderr = normalizeCwd(normalizedStderr);

  normalizedStderr = normalizedStderr.replaceAll(IPV4, "x.x.x.x");
  normalizedStderr = normalizedStderr.replaceAll(IPV6, "[x:x:x:x:x:x:x:x]");
  normalizedStderr = normalizedStderr.replaceAll(/:[0-9]+\//g, ":<port>/");

  if (!/On Your Network \(IPv6\)/.test(stderr)) {
    // Github Actions doesn't' support IPv6 on ubuntu in some cases
    normalizedStderr = normalizedStderr.split("\n");

    const ipv4MessageIndex = normalizedStderr.findIndex((item) =>
      /On Your Network \(IPv4\)/.test(item),
    );

    if (ipv4MessageIndex !== -1) {
      normalizedStderr.splice(
        ipv4MessageIndex + 1,
        0,
        "<i> [webpack-dev-server] On Your Network (IPv6): http://[x:x:x:x:x:x:x:x]:<port>/",
      );
    }

    normalizedStderr = normalizedStderr.join("\n");
  }

  // the warning below is causing CI failure on some jobs
  if (/Gracefully shutting down/.test(stderr)) {
    normalizedStderr = normalizedStderr.replace(
      "\n<i> [webpack-dev-server] Gracefully shutting down. To force exit, press ^C again. Please wait...",
      "",
    );
  }

  normalizedStderr = normalizeVersions(normalizedStderr);
  normalizedStderr = normalizeError(normalizedStderr);

  return normalizedStderr;
};

const getWebpackCliArguments = (startWith) => {
  if (typeof startWith === "undefined") {