function getBrowserInfo()

in core.ts [1085:1126]

• 36 lines of code
• 8 McCabe index (conditional complexity)

function getBrowserInfo(): BrowserInfo | null {
  if (typeof navigator === "undefined" || !navigator) {
    return null;
  }

  // NOTE: The order matters here!
  const browserPatterns = [
    { key: "edge" as const, pattern: /Edge(?:\W+(\d+)\.(\d+)(?:\.(\d+))?)?/ },
    { key: "ie" as const, pattern: /MSIE(?:\W+(\d+)\.(\d+)(?:\.(\d+))?)?/ },
    {
      key: "ie" as const,
      pattern: /Trident(?:.*rv\:(\d+)\.(\d+)(?:\.(\d+))?)?/,
    },
    {
      key: "chrome" as const,
      pattern: /Chrome(?:\W+(\d+)\.(\d+)(?:\.(\d+))?)?/,
    },
    {
      key: "firefox" as const,
      pattern: /Firefox(?:\W+(\d+)\.(\d+)(?:\.(\d+))?)?/,
    },
    {
      key: "safari" as const,
      pattern:
        /(?:Version\W+(\d+)\.(\d+)(?:\.(\d+))?)?(?:\W+Mobile\S*)?\W+Safari/,
    },
  ];

  // Find the FIRST matching browser
  for (const { key, pattern } of browserPatterns) {
    const match = pattern.exec(navigator.userAgent);
    if (match) {
      const major = match[1] || 0;
      const minor = match[2] || 0;
      const patch = match[3] || 0;

      return { browser: key, version: `${major}.${minor}.${patch}` };
    }
  }

  return null;
}