input.json

{
  "scriptId": "1",
  "url": "/test/fixtures/hello-world/lib.js",
  "functions": [
    {
      "functionName": "",
      "ranges": [
        {
          "startOffset": 0,
          "endOffset": 130,
          "count": 1
        }
      ],
      "isBlockCoverage": true
    },
    {
      "functionName": "",
      "ranges": [
        {
          "startOffset": 1,
          "endOffset": 128,
          "count": 1
        }
      ],
      "isBlockCoverage": true
    },
    {
      "functionName": "module.exports",
      "ranges": [
        {
          "startOffset": 79,
          "endOffset": 125,
          "count": 1
        }
      ],
      "isBlockCoverage": true
    }
  ]
}

output.json

{
  "url": "/test/fixtures/hello-world/lib.js",
  "scriptId": "1",
  "functions": [
    {
      "functionName": "",
      "isBlockCoverage": true,
      "ranges": [
        {
          "startOffset": 0,
          "endOffset": 130,
          "count": 1
        }
      ]
    },
    {
      "functionName": "",
      "isBlockCoverage": true,
      "ranges": [
        {
          "startOffset": 0,
          "endOffset": 1,
          "count": 1
        },
        {
          "startOffset": 1,
          "endOffset": 128,
          "count": 2
        },
        {
          "startOffset": 1,
          "endOffset": 128,
          "count": 1
        },
        {
          "startOffset": 128,
          "endOffset": 128,
          "count": 2
        },
        {
          "startOffset": 128,
          "endOffset": 130,
          "count": 1
        }
      ]
    },
    {
      "functionName": "module.exports",
      "isBlockCoverage": true,
      "ranges": [
        {
          "startOffset": 79,
          "endOffset": 125,
          "count": 2
        }
      ]
    }
  ]
}