Why does Google add while(1); at the beginning of their JSON responses?

Hi everyone! I'm a beginner frontend developer, and recently I encountered an interesting feature when working with the Google API. When I make a request to some of their endpoints, for example, the Google Calendar API or Google Suggest, I see a strange construct in the response: `while(1);` before the JSON itself. Here's an example of what the response looks like: ``` while(1); {"items": [{"id": 1, "name": "test"}]} ``` At first, I thought it was some kind of error or bug. I tried to parse such a response using `JSON.parse()` — naturally, I got an error because `while(1);` is not valid JSON. I had to write a workaround to trim this prefix: ```javascript fetch('https://some-google-api.com/data') .then(response => response.text()) .then(text => { const json = text.replace(/^whil