Problem

A failing test in a Shopify Liquid utility points to incorrect bracket validation. You are given a string s containing only the characters ()[]{} and must return True if the brackets are balanced and properly nested, otherwise return False.

This models a common debugging task: isolate the edge case causing the failure and implement the correct validation logic.

Formal Specification

• Input: a string s
• Output: a boolean
• Return True when every opening bracket has a matching closing bracket of the same type in the correct order.

Examples

Example 1

• Input: s = "()[]{}"
• Output: True
• Explanation: Each bracket opens and closes in the correct order.

Example 2

• Input: s = "([)]"
• Output: False
• Explanation: The closing ) does not match the most recent unmatched opening bracket [.

Example 3

• Input: s = "{[]}"
• Output: True
• Explanation: Nested brackets are matched correctly.

Constraints

• 1 <= len(s) <= 10^5
• s contains only the characters (, ), [, ], {, }

Your solution should handle large inputs efficiently and correctly catch common failing cases such as early closing brackets, incorrect nesting, and leftover unmatched openings.