Function isQuotedString

packages/utils/src/index.ts:395–410

(str: string)

 * @public
 */
export function isQuotedString(str: string): boolean {
  // quickly return false if the value is note quoted
  if (str[0] !== '"' && str[0] !== "'") return false
  if (str[0] !== str[str.length - 1]) return false
  const quoteType = str[0]
  for (let p = 1; p < str.length; p++) {
    if (
      str[p] === quoteType &&
      (p === 1 || str[p - 1] !== '\\') &&
      p !== str.length - 1
    ) {
      return false
    }
  }
  return true
}

/**
 * Remove extra escape characters.