old_contents: {
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          "src/gray_sync.cc",
          "src/gray_async.cc",
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        "cflags_cc!": [ "-fno-exceptions" ],
        "include_dirs": ["<!@(node -p \"require('node-addon-api').include\")"],
        "dependencies": ["<!(node -p \"require('node-addon-api').gyp\")"],
        "defines": [ "NAPI_CPP_EXCEPTIONS" ],
        "conditions": [
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            "xcode_settings": {
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              "GCC_ENABLE_CPP_EXCEPTIONS": "YES",
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new_contents: {
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      {
        "target_name": "addon",
        "sources": [
          "src/addon.cc",
          "src/diff.cc",
          "src/gray_sync.cc",
          "src/gray_async.cc",
          "src/rgb_sync.cc",
          "src/rgb_async.cc"
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        "cflags_cc!": [ "-fno-exceptions" ],
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        "dependencies": ["<!(node -p \"require('node-addon-api').gyp\")"],
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              "GCC_ENABLE_CPP_EXCEPTIONS": "YES",
              "MACOSX_DEPLOYMENT_TARGET": "10.7"
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        ]
      }
    ]
  }
subject: remove unused entry