```ts
export function parseCsvLine(line: string): string[] {
  if (!line || line.trim() === "") return [];

  const fields: string[] = [];
  let currentField = "";
  let inQuote = false;

  for (const char of line) {
    if (char === '"') {
      if (inQuote) {
        // Escaped quote
        currentField += '"';
      } else {
        // Start or end of quoted field
        inQuote = !inQuote;
      }
    } else if (char === "," && !inQuote) {
      fields.push(currentField.trim());
      currentField = "";
    } else {
      currentField += char;
    }
  }

  // Add the last field, if any
  if (currentField.length > 0) {
    fields.push(currentField.trim());
  }

  return fields;
}
```