`CSS.takeCoverageDelta`

Obtain list of rules that became used since last call to this method (or since start of coverage instrumentation).

Domain: CSS experimental

Returns

Name	Type	Description
`coverage`	`array`
`timestamp`	`number`	Monotonically increasing time, in seconds.

{
  "id": 1,
  "method": "CSS.takeCoverageDelta"
}

{
  "id": 1,
  "result": {
    "coverage": [],
    "timestamp": 1.0
  }
}

const result = await send('CSS.takeCoverageDelta');
console.log(result);
// {"coverage": [], "timestamp": 1.0}