如何通过结构相等性检查结构集合中的结构？

function checkStructuralEquality(structures) {
  let equalStructures = [];
  
  for (let i = 0; i < structures.length; i++) {
    let currentStructure = structures[i];
    let isEqual = true;
    
    for (let j = i+1; j < structures.length; j++) {
      let comparedStructure = structures[j];
      
      if (!arePropertiesEqual(currentStructure, comparedStructure)) {
        isEqual = false;
        break;
      }
    }
    
    if (isEqual) {
      equalStructures.push(currentStructure);
    }
  }
  
  return equalStructures;
}

function arePropertiesEqual(struct1, struct2) {
  if (Object.keys(struct1).length !== Object.keys(struct2).length) {
    return false;
  }
  
  for (let key in struct1) {
    if (typeof struct1[key] === 'object') {
      if (!arePropertiesEqual(struct1[key], struct2[key])) {
        return false;
      }
    } else {
      if (struct1[key] !== struct2[key]) {
        return false;
      }
    }
  }
  
  return true;
}

// 示例用法
let structures = [
  { name: 'John', age: 30 },
  { name: 'Mary', age: 25 },
  { name: 'John', age: 30 },
  { name: 'Jane', age: 27 }
];

let equalStructures = checkStructuralEquality(structures);
console.log(equalStructures);