Test for data thing

input.json

[
  {
    "_id": "5527dfcebd519b4db144e1e3",
    "index": 0,
    "guid": "4e814f3e-2caa-45a7-bb30-87643bf3f4a1",
    "isActive": false,
    "balance": "$2,730.86",
    "picture": "http://placehold.it/32x32",
    "age": 24,
    "eyeColor": "blue",
    "name": {
      "first": "Orr",
      "last": "Morse"
    },
    "company": "NEBULEAN",
    "email": "orr.morse@nebulean.io",
    "phone": "+1 (861) 501-3824",
    "address": "348 Kingsway Place, Orick, South Carolina, 8065",
    "about": "Dolore sit in mollit ea laborum minim reprehenderit consequat eu amet id est. Excepteur consectetur aliqua mollit minim veniam do ipsum elit qui nisi sint quis. Enim eiusmod nostrud do veniam id Lorem cupidatat cupidatat.\r\n",
    "registered": "Monday, August 25, 2014 9:09 PM",
    "latitude": 33.7698,
    "longitude": -153.957423,
    "tags": [
      "culpa",
      "eu",
      "ipsum",
      "magna",
      "dolor",
      "nulla",
      "labore"
    ],
    "range": [
      0,
      1,
      2,
      3,
      4,
      5,
      6,
      7,
      8,
      9
    ],
    "friends": [
      {
        "id": 0,
        "name": "Sheryl Bonner"
      },
      {
        "id": 1,
        "name": "Colon Nolan"
      },
      {
        "id": 2,
        "name": "Addie Underwood"
      }
    ],
    "greeting": "Hello, Orr! You have 5 unread messages.",
    "favoriteFruit": "apple"
  },
  {
    "_id": "5527dfcead082ebff1596afe",
    "index": 1,
    "guid": "f20e6071-e7c9-4f50-a24a-55b82118c75c",
    "isActive": true,
    "balance": "$3,165.62",
    "picture": "http://placehold.it/32x32",
    "age": 24,
    "eyeColor": "green",
    "name": {
      "first": "Rosales",
      "last": "Vasquez"
    },
    "company": "EVIDENDS",
    "email": "rosales.vasquez@evidends.org",
    "phone": "+1 (991) 499-3069",
    "address": "308 Elliott Place, Sanford, Vermont, 9000",
    "about": "Do amet aute nisi ipsum. Proident incididunt sit ad ut et sit eu qui commodo voluptate aliquip dolor. Aliquip Lorem Lorem magna culpa labore enim magna mollit aliquip ipsum.\r\n",
    "registered": "Saturday, March 22, 2014 1:00 AM",
    "latitude": -9.876836,
    "longitude": -22.185813,
    "tags": [
      "excepteur",
      "occaecat",
      "fugiat",
      "officia",
      "duis",
      "velit",
      "cupidatat"
    ],
    "range": [
      0,
      1,
      2,
      3,
      4,
      5,
      6,
      7,
      8,
      9
    ],
    "friends": [
      {
        "id": 0,
        "name": "Belinda Reed"
      },
      {
        "id": 1,
        "name": "Rosa Morrow"
      },
      {
        "id": 2,
        "name": "Tessa Tyler"
      }
    ],
    "greeting": "Hello, Rosales! You have 8 unread messages.",
    "favoriteFruit": "strawberry"
  },
  {
    "_id": "5527dfceda45e834cda89bee",
    "index": 2,
    "guid": "6b6e6271-7a06-4970-b075-938985e14560",
    "isActive": true,
    "balance": "$2,259.73",
    "picture": "http://placehold.it/32x32",
    "age": 22,
    "eyeColor": "blue",
    "name": {
      "first": "Wade",
      "last": "Branch"
    },
    "company": "ACCEL",
    "email": "wade.branch@accel.com",
    "phone": "+1 (960) 594-2108",
    "address": "665 Gem Street, Collins, Arkansas, 221",
    "about": "Exercitation Lorem cillum ea sint esse reprehenderit qui labore consectetur qui deserunt sit mollit. Ullamco deserunt ut ad cupidatat enim ipsum nostrud velit quis pariatur cillum. Mollit incididunt magna anim do non commodo.\r\n",
    "registered": "Friday, March 21, 2014 6:39 PM",
    "latitude": 17.691507,
    "longitude": 87.551515,
    "tags": [
      "labore",
      "quis",
      "veniam",
      "laborum",
      "sit",
      "nisi",
      "ea"
    ],
    "range": [
      0,
      1,
      2,
      3,
      4,
      5,
      6,
      7,
      8,
      9
    ],
    "friends": [
      {
        "id": 0,
        "name": "Burnett Hubbard"
      },
      {
        "id": 1,
        "name": "Ruby Delgado"
      },
      {
        "id": 2,
        "name": "Knight Maxwell"
      }
    ],
    "greeting": "Hello, Wade! You have 9 unread messages.",
    "favoriteFruit": "strawberry"
  },
  {
    "_id": "5527dfce3060e86e60d1a630",
    "index": 3,
    "guid": "8a603f92-5d7e-4798-9a1e-b801523f66d7",
    "isActive": true,
    "balance": "$3,476.38",
    "picture": "http://placehold.it/32x32",
    "age": 36,
    "eyeColor": "blue",
    "name": {
      "first": "Hampton",
      "last": "Albert"
    },
    "company": "ZIALACTIC",
    "email": "hampton.albert@zialactic.me",
    "phone": "+1 (933) 415-3302",
    "address": "169 Oceanic Avenue, Lund, Federated States Of Micronesia, 3797",
    "about": "Cupidatat irure fugiat occaecat non cupidatat. Aute ullamco sunt est qui amet aliqua officia sunt pariatur et ut. Dolore ullamco do officia minim voluptate. Commodo irure Lorem eiusmod cupidatat dolore. Et eu adipisicing occaecat culpa ipsum consequat qui incididunt deserunt.\r\n",
    "registered": "Wednesday, November 12, 2014 12:39 AM",
    "latitude": 44.671632,
    "longitude": 147.78073,
    "tags": [
      "et",
      "duis",
      "eiusmod",
      "amet",
      "amet",
      "proident",
      "pariatur"
    ],
    "range": [
      0,
      1,
      2,
      3,
      4,
      5,
      6,
      7,
      8,
      9
    ],
    "friends": [
      {
        "id": 0,
        "name": "Imelda Mendez"
      },
      {
        "id": 1,
        "name": "Rosie Lane"
      },
      {
        "id": 2,
        "name": "Blanca Page"
      }
    ],
    "greeting": "Hello, Hampton! You have 8 unread messages.",
    "favoriteFruit": "apple"
  },
  {
    "_id": "5527dfce5bb61e69509969b2",
    "index": 4,
    "guid": "d1e51293-5fca-4f6b-8b1e-b2648067b41d",
    "isActive": false,
    "balance": "$3,462.03",
    "picture": "http://placehold.it/32x32",
    "age": 27,
    "eyeColor": "blue",
    "name": {
      "first": "Curtis",
      "last": "Day"
    },
    "company": "EGYPTO",
    "email": "curtis.day@egypto.info",
    "phone": "+1 (896) 490-2908",
    "address": "957 Orange Street, Chesterfield, Michigan, 7969",
    "about": "Officia minim minim nulla elit in. Nulla qui ullamco eiusmod voluptate consectetur qui id ad commodo pariatur. Labore occaecat ipsum eiusmod reprehenderit laboris duis. Sunt nostrud nulla occaecat adipisicing minim ad duis ipsum et.\r\n",
    "registered": "Monday, February 23, 2015 8:20 PM",
    "latitude": 88.735131,
    "longitude": 91.612333,
    "tags": [
      "commodo",
      "cillum",
      "nisi",
      "reprehenderit",
      "reprehenderit",
      "mollit",
      "reprehenderit"
    ],
    "range": [
      0,
      1,
      2,
      3,
      4,
      5,
      6,
      7,
      8,
      9
    ],
    "friends": [
      {
        "id": 0,
        "name": "Booth Sutton"
      },
      {
        "id": 1,
        "name": "Clarice Hutchinson"
      },
      {
        "id": 2,
        "name": "Bentley Joyce"
      }
    ],
    "greeting": "Hello, Curtis! You have 8 unread messages.",
    "favoriteFruit": "apple"
  }
]

script.js

return input.reduce(function(groups,r) {
    if (!groups[r.eyeColor]) {
        groups[r.eyeColor] = [];
    }
    groups[r.eyeColor].push({
        name: r.name
    });
    return groups;
},{});