Convert Date
This function should take a date string in the format dd/mm/yyyy and convert it to the format yyyy-mm-dd. If the input is not in the correct format, the function should return an error message "Error: Invalid date.".
Input: String (string).
Output: String (string).
Examples:
assert.strictEqual(convertDate("25/12/2021"), "2021-12-25");
assert.strictEqual(convertDate("01/01/2000"),...You should be an authorized user in order to see the full description and start solving this mission.