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Check Pascal Case

// CheckPascalCase method checks the given string is in PascalCase or not.

// Problem Source & Explanation:

 * CheckPascalCase method returns true if the string in PascalCase, else return the false.
 * @param {String} VarName the name of the variable to check.
 * @returns `Boolean` return true if the string is in PascalCase, else return false.
const CheckPascalCase = (VarName) => {
  // firstly, check that input is a string or not.
  if (typeof VarName !== 'string') {
    throw new TypeError('Argument is not a string.')

  const pat = /^[A-Z][A-Za-z]*$/
  return pat.test(VarName)

export { CheckPascalCase }