Arguments: 
  /home/per/n/bin/node /home/per/n/bin/yarn install

PATH: 
  /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin:/home/per/.rvm/bin:/home/per/n/bin:/home/per/.rvm/bin

Yarn version: 
  0.16.1

Node version: 
  6.9.1

Platform: 
  linux x64

npm manifest: 
  {
    "name": "leaflet.vectorgrid",
    "version": "1.1.0",
    "description": "Display gridded vector data (sliced GeoJSON or protobuf vector tiles) in Leaflet 1.0.1",
    "main": "dist/Leaflet.VectorGrid.bundled.min.js",
    "dependencies": {},
    "scripts": {
      "test": "echo \"Error: no test specified\" && exit 1",
      "prepublish": "node_modules/.bin/gobble build -f dist/",
      "start": "node_modules/.bin/gobble"
    },
    "keywords": [
      "leaflet",
      "vector",
      "geojson",
      "topojson"
    ],
    "author": "Iván Sánchez Ortega <ivan@sanchezortega.es>",
    "license": "Beerware",
    "repository": {
      "type": "git",
      "url": "https://github.com/IvanSanchez/Leaflet.VectorGrid.git"
    },
    "bugs": {
      "url": "https://github.com/IvanSanchez/Leaflet.VectorGrid/issues"
    },
    "devDependencies": {
      "geojson-vt": "^2.2.0",
      "gobble": "^0.11.3",
      "gobble-buble": "^0.10.0",
      "gobble-cli": "^0.7.0",
      "gobble-concat": "gobblejs/gobble-concat.git#fbe0eb5578785f7b209947bdfac912ca5354d0ff",
      "gobble-include": "^0.3.1",
      "gobble-uglifyjs": "^0.2.1",
      "leaflet": "^1.0.1",
      "pbf": "^2.0.1",
      "topojson": "^1.6.26",
      "vector-tile": "^1.2.1"
    }
  }

yarn manifest: 
  No manifest

bower manifest: 
  No manifest

Lockfile: 
  No lockfile

Trace: 
  TypeError: Cannot read property 'split' of undefined
      at Function.parseRefs (/home/per/n/lib/node_modules/yarn/lib/util/git.js:439:20)
      at /home/per/n/lib/node_modules/yarn/lib/resolvers/exotics/hosted-git-resolver.js:138:50
      at next (native)
      at step (/home/per/n/lib/node_modules/yarn/node_modules/babel-runtime/helpers/asyncToGenerator.js:17:30)
      at /home/per/n/lib/node_modules/yarn/node_modules/babel-runtime/helpers/asyncToGenerator.js:28:13
      at process._tickCallback (internal/process/next_tick.js:103:7)