Function decodeBytesToString

cloudflare-temp-email-utils.js:207–236

(bytes, charset = 'utf-8')

  }

  function decodeBytesToString(bytes, charset = 'utf-8') {
    const normalizedCharset = String(charset || 'utf-8').trim().toLowerCase();
    const candidates = [normalizedCharset];
    if (normalizedCharset === 'utf8') {
      candidates.unshift('utf-8');
    }
    if (normalizedCharset === 'gb2312' || normalizedCharset === 'gbk') {
      candidates.unshift('gb18030');
    }

    for (const candidate of candidates) {
      try {
        if (typeof TextDecoder !== 'undefined') {
          return new TextDecoder(candidate, { fatal: false }).decode(bytes);
        }
      } catch {
        // ignore and try fallback
      }
    }

    if (typeof Buffer !== 'undefined') {
      return Buffer.from(bytes).toString('utf8');
    }

    let result = '';
    for (const byte of bytes) {
      result += String.fromCharCode(byte);
    }
    return result;
  }

  function getCharsetFromContentType(contentType = '') {
    const match = String(contentType || '').match(/charset="?([^";]+)"?/i);