Function isCodeFile

src/utils/language-detection.ts:193–205

(
  filePath: string,
  extensions?: Iterable<string> | ReadonlySet<string>
)

 * Check if a file is a code file
 */
export function isCodeFile(
  filePath: string,
  extensions?: Iterable<string> | ReadonlySet<string>
): boolean {
  const ext = path.extname(filePath).toLowerCase();
  const supportedExtensions =
    extensions instanceof Set
      ? extensions
      : extensions
        ? buildCodeExtensions(extensions)
        : defaultCodeExtensions;
  return supportedExtensions.has(ext);
}

/**
 * Check if a file is binary