如何在Firebase文件上设置访问控制允许原点

我正在尝试将某个文件上的

访问控制允许原点设置为
*

这是我的firebase.json文件：

{
  "database": {
    "rules": "database.rules.json"
  },
  "hosting": {
    "public": "public",
    "rewrites": [
      {
        "source": "**",
        "destination": "/index.html"
      }
    ]
  },
  "headers": [ {
    "source" : "bundle.js",
    "headers" : [ {
      "key" : "Access-Control-Allow-Origin",
      "value" : "*"
    } ]
  }]
}

但是它永远不会被设置：
尝试将头嵌套在主机下方，而不是作为它自己的顶级节点：

{
  "database": {
    "rules": "database.rules.json"
  },
  "hosting": {
    "public": "public",
    "rewrites": [{
        "source": "**",
        "destination": "/index.html"
    }],
    "headers": [{
      "source" : "bundle.js",
      "headers" : [{
        "key" : "Access-Control-Allow-Origin",
        "value" : "*"
      }]
    }]
  }
}

“通过在firebase.json文件的hosting中定义headers节，可以指定自定义的、特定于文件的标题：”-