Function escapeRegex

packages/emcn/src/components/code/code.tsx:831–833

* Escapes special regex characters in a string.

(str: string)

 * Escapes special regex characters in a string.
 */
function escapeRegex(str: string): string {
  return str.replace(/[.*+?^${}()|[\]\\]/g, '\\$&')
}

/**
 * Applies search highlighting to already syntax-highlighted HTML.