Function updateClassName

packages/cli/src/transform.ts:535–553

(
  filePath: string,
  lineNumber: number,
  columnNumber: number,
  updates: ClassNameUpdate[]
)

}

export function updateClassName(
  filePath: string,
  lineNumber: number,
  columnNumber: number,
  updates: ClassNameUpdate[]
): string {
  const source = fs.readFileSync(filePath, "utf-8");
  const { j, root, quoteStyle } = parseSource(source, filePath);

  const target = findJSXElementAt(j, root, lineNumber, columnNumber);
  if (!target) {
    throw new Error(
      `No JSX element found at ${lineNumber}:${columnNumber}`
    );
  }

  mutateClassName(j, target, updates);
  return root.toSource({ quote: quoteStyle });
}

// ── updateTextContent ────────────────────────────────────────────────────