codebridge-ai/testlog/deepseek-coder-6.7b/javascript/class-optimization-1754151518507.json

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{
  "timestamp": "2025-08-02T16:18:38.506Z",
  "model": "deepseek-coder:6.7b",
  "language": "javascript",
  "scenario": "class-optimization",
  "task": "Add off method, once method, and error handling",
  "originalCode": "class EventEmitter {\n  constructor() {\n    this.events = {};\n  }\n  \n  on(event, callback) {\n    if (!this.events[event]) {\n      this.events[event] = [];\n    }\n    this.events[event].push(callback);\n  }\n  \n  emit(event, data) {\n    if (this.events[event]) {\n      this.events[event].forEach(cb => cb(data));\n    }\n  }\n}",
  "rawResponse": "Here is your modified EventEmitter class with added `off`, `once` methods and some error handling:\n\n```javascript\nclass EventEmitter {\n  constructor() {\n    this.events = {};\n  }\n  \n  on(event, callback) {\n    if (typeof callback !== 'function') throw new Error('Callback must be a function');\n    \n    if (!this.events[event]) {\n      this.events[event] = [];\n    }\n    this.events[event].push(callback);\n  }\n  \n  off(event, callback) {\n    if (typeof event !== 'string') throw new Error('Event must be a string');\n    \n    if (!this.events[event]) return; // If no such event exists, do nothing\n    \n    this.events[event] = this.events[event].filter(cb => cb !== callback);\n  }\n  \n  once(event, callback) {\n    const self = this;\n    function fn() {\n      self.off(event, fn); // Remove the event listener after it's called\n      return callback.apply(this, arguments);\n    }\n    \n    if (typeof callback !== 'function') throw new Error('Callback must be a function');\n    \n    this.on(event, fn);\n  }\n  \n  emit(event, data) {\n    if (!this.events[event]) return; // If no such event exists, do nothing\n    \n    this.events[event].forEach(cb => cb(data));\n  }\n}\n```\nThis class now supports removing a specific callback function from an event using the `off` method, setting up a one-time listener with the `once` method and includes some basic error handling for invalid inputs.\n",
  "improvedCode": "javascript\nclass EventEmitter {\n  constructor() {\n    this.events = {};\n  }\n  \n  on(event, callback) {\n    if (typeof callback !== 'function') throw new Error('Callback must be a function');\n    \n    if (!this.events[event]) {\n      this.events[event] = [];\n    }\n    this.events[event].push(callback);\n  }\n  \n  off(event, callback) {\n    if (typeof event !== 'string') throw new Error('Event must be a string');\n    \n    if (!this.events[event]) return; // If no such event exists, do nothing\n    \n    this.events[event] = this.events[event].filter(cb => cb !== callback);\n  }\n  \n  once(event, callback) {\n    const self = this;\n    function fn() {\n      self.off(event, fn); // Remove the event listener after it's called\n      return callback.apply(this, arguments);\n    }\n    \n    if (typeof callback !== 'function') throw new Error('Callback must be a function');\n    \n    this.on(event, fn);\n  }\n  \n  emit(event, data) {\n    if (!this.events[event]) return; // If no such event exists, do nothing\n    \n    this.events[event].forEach(cb => cb(data));\n  }\n}",
  "duration": 10132,
  "success": true,
  "qualityMetrics": {
    "hasCode": true,
    "hasErrorHandling": true,
    "hasModernSyntax": true,
    "score": 0.7,
    "rawScore": 0.7,
    "maxScore": 1
  },
  "error": null
}