yarn-error.log

Arguments: 
  /Users/sarunyhotsuvannachoti/.nvm/versions/node/v8.6.0/bin/node /usr/local/Cellar/yarn/1.5.1/libexec/bin/yarn.js test

PATH: 
  /Users/sarunyhotsuvannachoti/.rvm/gems/ruby-2.4.1/bin:/Users/sarunyhotsuvannachoti/.rvm/gems/ruby-2.4.1@global/bin:/Users/sarunyhotsuvannachoti/.rvm/rubies/ruby-2.4.1/bin:/Users/sarunyhotsuvannachoti/google-cloud-sdk/bin:/Users/sarunyhotsuvannachoti/.rbenv/shims:/usr/local/opt/libpq/bin:/Users/sarunyhotsuvannachoti/.nvm/versions/node/v8.6.0/bin:/Library/Frameworks/Python.framework/Versions/3.6/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Users/sarunyhotsuvannachoti/.rvm/bin

Yarn version: 
  1.5.1

Node version: 
  8.6.0

Platform: 
  darwin x64

npm manifest: 
  {
    "name": "node-slackr",
    "version": "0.3.0",
    "description":
      "A node.js module for send notifications to Slack, support multiple channel and attachments",
    "main": "index.js",
    "scripts": {
      "test": "./node_modules/.bin/_mocha"
    },
    "repository": "https://github.com/chenka/node-slackr",
    "keywords": ["slack"],
    "author": "Sarunyhot Suvannachoti <teamyakusa@gmail.com>",
    "license": "MIT",
    "dependencies": {
      "lodash": "^4.11.1",
      "request": "^2.72.0"
    },
    "devDependencies": {
      "mocha": "^2.4.5",
      "nock": "^8.0.0",
      "should": "^8.3.1",
      "supertest": "^1.2.0"
    }
  }

yarn manifest: 
  No manifest

Lockfile: 
  # THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
  # yarn lockfile v1
  
  
  ajv@^5.1.0:
    version "5.5.2"
    resolved "https://registry.yarnpkg.com/ajv/-/ajv-5.5.2.tgz#73b5eeca3fab653e3d3f9422b341ad42205dc965"
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      fast-deep-equal "^1.0.0"
      fast-json-stable-stringify "^2.0.0"
      json-schema-traverse "^0.3.0"
  
  asn1@~0.2.3:
    version "0.2.3"
    resolved "https://registry.yarnpkg.com/asn1/-/asn1-0.2.3.tgz#dac8787713c9966849fc8180777ebe9c1ddf3b86"
  
  assert-plus@1.0.0, assert-plus@^1.0.0:
    version "1.0.0"
    resolved "https://registry.yarnpkg.com/assert-plus/-/assert-plus-1.0.0.tgz#f12e0f3c5d77b0b1cdd9146942e4e96c1e4dd525"
  
  assertion-error@^1.0.1:
    version "1.1.0"
    resolved "https://registry.yarnpkg.com/assertion-error/-/assertion-error-1.1.0.tgz#e60b6b0e8f301bd97e5375215bda406c85118c0b"
  
  async@^1.4.0:
    version "1.5.2"
    resolved "https://registry.yarnpkg.com/async/-/async-1.5.2.tgz#ec6a61ae56480c0c3cb241c95618e20892f9672a"
  
  asynckit@^0.4.0:
    version "0.4.0"
    resolved "https://registry.yarnpkg.com/asynckit/-/asynckit-0.4.0.tgz#c79ed97f7f34cb8f2ba1bc9790bcc366474b4b79"
  
  aws-sign2@~0.7.0:
    version "0.7.0"
    resolved "https://registry.yarnpkg.com/aws-sign2/-/aws-sign2-0.7.0.tgz#b46e890934a9591f2d2f6f86d7e6a9f1b3fe76a8"
  
  aws4@^1.6.0:
    version "1.7.0"
    resolved "https://registry.yarnpkg.com/aws4/-/aws4-1.7.0.tgz#d4d0e9b9dbfca77bf08eeb0a8a471550fe39e289"
  
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    resolved "https://registry.yarnpkg.com/bcrypt-pbkdf/-/bcrypt-pbkdf-1.0.1.tgz#63bc5dcb61331b92bc05fd528953c33462a06f8d"
    dependencies:
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    dependencies:
      hoek "4.x.x"
  
  boom@5.x.x:
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    resolved "https://registry.yarnpkg.com/boom/-/boom-5.2.0.tgz#5dd9da6ee3a5f302077436290cb717d3f4a54e02"
    dependencies:
      hoek "4.x.x"
  
  caseless@~0.12.0:
    version "0.12.0"
    resolved "https://registry.yarnpkg.com/caseless/-/caseless-0.12.0.tgz#1b681c21ff84033c826543090689420d187151dc"
  
  "chai@>=1.9.2 <4.0.0":
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    resolved "https://registry.yarnpkg.com/chai/-/chai-3.5.0.tgz#4d02637b067fe958bdbfdd3a40ec56fef7373247"
    dependencies:
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      deep-eql "^0.1.3"
      type-detect "^1.0.0"
  
  co@^4.6.0:
    version "4.6.0"
    resolved "https://registry.yarnpkg.com/co/-/co-4.6.0.tgz#6ea6bdf3d853ae54ccb8e47bfa0bf3f9031fb184"
  
  coffeescript@~1.8.0:
    version "1.8.0"
    resolved "https://registry.yarnpkg.com/coffeescript/-/coffeescript-1.8.0.tgz#4c503e2dbdf268aee33fdd34cb259d53ff963518"
    dependencies:
      mkdirp "~0.3.5"
  
  combined-stream@1.0.6, combined-stream@^1.0.5, combined-stream@~1.0.5:
    version "1.0.6"
    resolved "https://registry.yarnpkg.com/combined-stream/-/combined-stream-1.0.6.tgz#723e7df6e801ac5613113a7e445a9b69cb632818"
    dependencies:
      delayed-stream "~1.0.0"
  
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  commander@2.3.0:
    version "2.3.0"
    resolved "https://registry.yarnpkg.com/commander/-/commander-2.3.0.tgz#fd430e889832ec353b9acd1de217c11cb3eef873"
  
  component-emitter@~1.2.0:
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    resolved "https://registry.yarnpkg.com/component-emitter/-/component-emitter-1.2.1.tgz#137918d6d78283f7df7a6b7c5a63e140e69425e6"
  
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    version "2.0.6"
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    version "1.0.2"
    resolved "https://registry.yarnpkg.com/core-util-is/-/core-util-is-1.0.2.tgz#b5fd54220aa2bc5ab57aab7140c940754503c1a7"
  
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    dependencies:
      boom "5.x.x"
  
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      assert-plus "^1.0.0"
  
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    dependencies:
      ms "2.0.0"
  
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    dependencies:
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  deep-equal@^1.0.0:
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    resolved "https://registry.yarnpkg.com/deep-equal/-/deep-equal-1.0.1.tgz#f5d260292b660e084eff4cdbc9f08ad3247448b5"
  
  delayed-stream@~1.0.0:
    version "1.0.0"
    resolved "https://registry.yarnpkg.com/delayed-stream/-/delayed-stream-1.0.0.tgz#df3ae199acadfb7d440aaae0b29e2272b24ec619"
  
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    resolved "https://registry.yarnpkg.com/diff/-/diff-1.4.0.tgz#7f28d2eb9ee7b15a97efd89ce63dcfdaa3ccbabf"
  
  ecc-jsbn@~0.1.1:
    version "0.1.1"
    resolved "https://registry.yarnpkg.com/ecc-jsbn/-/ecc-jsbn-0.1.1.tgz#0fc73a9ed5f0d53c38193398523ef7e543777505"
    dependencies:
      jsbn "~0.1.0"
  
  escape-string-regexp@1.0.2:
    version "1.0.2"
    resolved "https://registry.yarnpkg.com/escape-string-regexp/-/escape-string-regexp-1.0.2.tgz#4dbc2fe674e71949caf3fb2695ce7f2dc1d9a8d1"
  
  extend@3.0.0:
    version "3.0.0"
    resolved "https://registry.yarnpkg.com/extend/-/extend-3.0.0.tgz#5a474353b9f3353ddd8176dfd37b91c83a46f1d4"
  
  extend@~3.0.1:
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    resolved "https://registry.yarnpkg.com/extend/-/extend-3.0.1.tgz#a755ea7bc1adfcc5a31ce7e762dbaadc5e636444"
  
  extsprintf@1.3.0:
    version "1.3.0"
    resolved "https://registry.yarnpkg.com/extsprintf/-/extsprintf-1.3.0.tgz#96918440e3041a7a414f8c52e3c574eb3c3e1e05"
  
  extsprintf@^1.2.0:
    version "1.4.0"
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  fast-deep-equal@^1.0.0:
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    resolved "https://registry.yarnpkg.com/fast-deep-equal/-/fast-deep-equal-1.1.0.tgz#c053477817c86b51daa853c81e059b733d023614"
  
  fast-json-stable-stringify@^2.0.0:
    version "2.0.0"
    resolved "https://registry.yarnpkg.com/fast-json-stable-stringify/-/fast-json-stable-stringify-2.0.0.tgz#d5142c0caee6b1189f87d3a76111064f86c8bbf2"
  
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    version "0.6.1"
    resolved "https://registry.yarnpkg.com/forever-agent/-/forever-agent-0.6.1.tgz#fbc71f0c41adeb37f96c577ad1ed42d8fdacca91"
  
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    resolved "https://registry.yarnpkg.com/form-data/-/form-data-1.0.0-rc3.tgz#d35bc62e7fbc2937ae78f948aaa0d38d90607577"
    dependencies:
      async "^1.4.0"
      combined-stream "^1.0.5"
      mime-types "^2.1.3"
  
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    version "2.3.2"
    resolved "https://registry.yarnpkg.com/form-data/-/form-data-2.3.2.tgz#4970498be604c20c005d4f5c23aecd21d6b49099"
    dependencies:
      asynckit "^0.4.0"
      combined-stream "1.0.6"
      mime-types "^2.1.12"
  
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    resolved "https://registry.yarnpkg.com/formidable/-/formidable-1.0.17.tgz#ef5491490f9433b705faa77249c99029ae348559"
  
  getpass@^0.1.1:
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    resolved "https://registry.yarnpkg.com/getpass/-/getpass-0.1.7.tgz#5eff8e3e684d569ae4cb2b1282604e8ba62149fa"
    dependencies:
      assert-plus "^1.0.0"
  
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    resolved "https://registry.yarnpkg.com/glob/-/glob-3.2.11.tgz#4a973f635b9190f715d10987d5c00fd2815ebe3d"
    dependencies:
      inherits "2"
      minimatch "0.3"
  
  growl@1.9.2:
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    resolved "https://registry.yarnpkg.com/growl/-/growl-1.9.2.tgz#0ea7743715db8d8de2c5ede1775e1b45ac85c02f"
  
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    version "2.0.0"
    resolved "https://registry.yarnpkg.com/har-schema/-/har-schema-2.0.0.tgz#a94c2224ebcac04782a0d9035521f24735b7ec92"
  
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    version "5.0.3"
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      ajv "^5.1.0"
      har-schema "^2.0.0"
  
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    dependencies:
      boom "4.x.x"
      cryptiles "3.x.x"
      hoek "4.x.x"
      sntp "2.x.x"
  
  hoek@4.x.x:
    version "4.2.1"
    resolved "https://registry.yarnpkg.com/hoek/-/hoek-4.2.1.tgz#9634502aa12c445dd5a7c5734b572bb8738aacbb"
  
  http-signature@~1.2.0:
    version "1.2.0"
    resolved "https://registry.yarnpkg.com/http-signature/-/http-signature-1.2.0.tgz#9aecd925114772f3d95b65a60abb8f7c18fbace1"
    dependencies:
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      sshpk "^1.7.0"
  
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    resolved "https://registry.yarnpkg.com/inherits/-/inherits-2.0.3.tgz#633c2c83e3da42a502f52466022480f4208261de"
  
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    version "1.0.0"
    resolved "https://registry.yarnpkg.com/is-typedarray/-/is-typedarray-1.0.0.tgz#e479c80858df0c1b11ddda6940f96011fcda4a9a"
  
  isarray@0.0.1:
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    resolved "https://registry.yarnpkg.com/isarray/-/isarray-0.0.1.tgz#8a18acfca9a8f4177e09abfc6038939b05d1eedf"
  
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    version "0.1.2"
    resolved "https://registry.yarnpkg.com/isstream/-/isstream-0.1.2.tgz#47e63f7af55afa6f92e1500e690eb8b8529c099a"
  
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    resolved "https://registry.yarnpkg.com/mime-db/-/mime-db-1.33.0.tgz#a3492050a5cb9b63450541e39d9788d2272783db"
  
  mime-types@^2.1.12, mime-types@^2.1.3, mime-types@~2.1.17:
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    resolved "https://registry.yarnpkg.com/mime-types/-/mime-types-2.1.18.tgz#6f323f60a83d11146f831ff11fd66e2fe5503bb8"
    dependencies:
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  mime@1.3.4:
    version "1.3.4"
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    version "0.3.0"
    resolved "https://registry.yarnpkg.com/minimatch/-/minimatch-0.3.0.tgz#275d8edaac4f1bb3326472089e7949c8394699dd"
    dependencies:
      lru-cache "2"
      sigmund "~1.0.0"
  
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    resolved "https://registry.yarnpkg.com/minimist/-/minimist-0.0.8.tgz#857fcabfc3397d2625b8228262e86aa7a011b05d"
  
  mkdirp@0.3.0:
    version "0.3.0"
    resolved "https://registry.yarnpkg.com/mkdirp/-/mkdirp-0.3.0.tgz#1bbf5ab1ba827af23575143490426455f481fe1e"
  
  mkdirp@0.5.1, mkdirp@^0.5.0:
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    resolved "https://registry.yarnpkg.com/mkdirp/-/mkdirp-0.5.1.tgz#30057438eac6cf7f8c4767f38648d6697d75c903"
    dependencies:
      minimist "0.0.8"
  
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    resolved "https://registry.yarnpkg.com/mkdirp/-/mkdirp-0.3.5.tgz#de3e5f8961c88c787ee1368df849ac4413eca8d7"
  
  mocha@^2.4.5:
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    resolved "https://registry.yarnpkg.com/mocha/-/mocha-2.5.3.tgz#161be5bdeb496771eb9b35745050b622b5aefc58"
    dependencies:
      commander "2.3.0"
      debug "2.2.0"
      diff "1.4.0"
      escape-string-regexp "1.0.2"
      glob "3.2.11"
      growl "1.9.2"
      jade "0.26.3"
      mkdirp "0.5.1"
      supports-color "1.2.0"
      to-iso-string "0.0.2"
  
  ms@0.7.1:
    version "0.7.1"
    resolved "https://registry.yarnpkg.com/ms/-/ms-0.7.1.tgz#9cd13c03adbff25b65effde7ce864ee952017098"
  
  ms@2.0.0:
    version "2.0.0"
    resolved "https://registry.yarnpkg.com/ms/-/ms-2.0.0.tgz#5608aeadfc00be6c2901df5f9861788de0d597c8"
  
  nock@^8.0.0:
    version "8.2.2"
    resolved "https://registry.yarnpkg.com/nock/-/nock-8.2.2.tgz#fe9d1b9d30e899e886bd79c420b06de7e90c478f"
    dependencies:
      chai ">=1.9.2 <4.0.0"
      debug "^2.2.0"
      deep-equal "^1.0.0"
      json-stringify-safe "^5.0.1"
      lodash "~4.9.0"
      mkdirp "^0.5.0"
      propagate "0.4.0"
      qs "^6.0.2"
  
  oauth-sign@~0.8.2:
    version "0.8.2"
    resolved "https://registry.yarnpkg.com/oauth-sign/-/oauth-sign-0.8.2.tgz#46a6ab7f0aead8deae9ec0565780b7d4efeb9d43"
  
  performance-now@^2.1.0:
    version "2.1.0"
    resolved "https://registry.yarnpkg.com/performance-now/-/performance-now-2.1.0.tgz#6309f4e0e5fa913ec1c69307ae364b4b377c9e7b"
  
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    version "0.4.0"
    resolved "https://registry.yarnpkg.com/propagate/-/propagate-0.4.0.tgz#f3fcca0a6fe06736a7ba572966069617c130b481"
  
  punycode@^1.4.1:
    version "1.4.1"
    resolved "https://registry.yarnpkg.com/punycode/-/punycode-1.4.1.tgz#c0d5a63b2718800ad8e1eb0fa5269c84dd41845e"
  
  qs@2.3.3:
    version "2.3.3"
    resolved "https://registry.yarnpkg.com/qs/-/qs-2.3.3.tgz#e9e85adbe75da0bbe4c8e0476a086290f863b404"
  
  qs@^6.0.2, qs@~6.5.1:
    version "6.5.1"
    resolved "https://registry.yarnpkg.com/qs/-/qs-6.5.1.tgz#349cdf6eef89ec45c12d7d5eb3fc0c870343a6d8"
  
  readable-stream@1.0.27-1:
    version "1.0.27-1"
    resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-1.0.27-1.tgz#6b67983c20357cefd07f0165001a16d710d91078"
    dependencies:
      core-util-is "~1.0.0"
      inherits "~2.0.1"
      isarray "0.0.1"
      string_decoder "~0.10.x"
  
  reduce-component@1.0.1:
    version "1.0.1"
    resolved "https://registry.yarnpkg.com/reduce-component/-/reduce-component-1.0.1.tgz#e0c93542c574521bea13df0f9488ed82ab77c5da"
  
  request@^2.72.0:
    version "2.85.0"
    resolved "https://registry.yarnpkg.com/request/-/request-2.85.0.tgz#5a03615a47c61420b3eb99b7dba204f83603e1fa"
    dependencies:
      aws-sign2 "~0.7.0"
      aws4 "^1.6.0"
      caseless "~0.12.0"
      combined-stream "~1.0.5"
      extend "~3.0.1"
      forever-agent "~0.6.1"
      form-data "~2.3.1"
      har-validator "~5.0.3"
      hawk "~6.0.2"
      http-signature "~1.2.0"
      is-typedarray "~1.0.0"
      isstream "~0.1.2"
      json-stringify-safe "~5.0.1"
      mime-types "~2.1.17"
      oauth-sign "~0.8.2"
      performance-now "^2.1.0"
      qs "~6.5.1"
      safe-buffer "^5.1.1"
      stringstream "~0.0.5"
      tough-cookie "~2.3.3"
      tunnel-agent "^0.6.0"
      uuid "^3.1.0"
  
  safe-buffer@^5.0.1, safe-buffer@^5.1.1:
    version "5.1.2"
    resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.1.2.tgz#991ec69d296e0313747d59bdfd2b745c35f8828d"
  
  should-equal@0.8.0:
    version "0.8.0"
    resolved "http://registry.npmjs.org/should-equal/-/should-equal-0.8.0.tgz#a3f05732ff45bac1b7ba412f8408856819641299"
    dependencies:
      should-type "0.2.0"
  
  should-format@0.3.2:
    version "0.3.2"
    resolved "https://registry.yarnpkg.com/should-format/-/should-format-0.3.2.tgz#a59831e01a2ddee149911bc7148be5c80319e1ff"
    dependencies:
      should-type "0.2.0"
  
  should-type@0.2.0:
    version "0.2.0"
    resolved "https://registry.yarnpkg.com/should-type/-/should-type-0.2.0.tgz#6707ef95529d989dcc098fe0753ab1f9136bb7f6"
  
  should@^8.3.1:
    version "8.4.0"
    resolved "https://registry.yarnpkg.com/should/-/should-8.4.0.tgz#5e60889d3e644bbdd397a30cd34fad28fcf90bc0"
    dependencies:
      should-equal "0.8.0"
      should-format "0.3.2"
      should-type "0.2.0"
  
  sigmund@~1.0.0:
    version "1.0.1"
    resolved "https://registry.yarnpkg.com/sigmund/-/sigmund-1.0.1.tgz#3ff21f198cad2175f9f3b781853fd94d0d19b590"
  
  sntp@2.x.x:
    version "2.1.0"
    resolved "https://registry.yarnpkg.com/sntp/-/sntp-2.1.0.tgz#2c6cec14fedc2222739caf9b5c3d85d1cc5a2cc8"
    dependencies:
      hoek "4.x.x"
  
  sshpk@^1.7.0:
    version "1.14.1"
    resolved "https://registry.yarnpkg.com/sshpk/-/sshpk-1.14.1.tgz#130f5975eddad963f1d56f92b9ac6c51fa9f83eb"
    dependencies:
      asn1 "~0.2.3"
      assert-plus "^1.0.0"
      dashdash "^1.12.0"
      getpass "^0.1.1"
    optionalDependencies:
      bcrypt-pbkdf "^1.0.0"
      ecc-jsbn "~0.1.1"
      jsbn "~0.1.0"
      tweetnacl "~0.14.0"
  
  string_decoder@~0.10.x:
    version "0.10.31"
    resolved "https://registry.yarnpkg.com/string_decoder/-/string_decoder-0.10.31.tgz#62e203bc41766c6c28c9fc84301dab1c5310fa94"
  
  stringstream@~0.0.5:
    version "0.0.5"
    resolved "https://registry.yarnpkg.com/stringstream/-/stringstream-0.0.5.tgz#4e484cd4de5a0bbbee18e46307710a8a81621878"
  
  superagent@^1.7.2:
    version "1.8.5"
    resolved "https://registry.yarnpkg.com/superagent/-/superagent-1.8.5.tgz#1c0ddc3af30e80eb84ebc05cb2122da8fe940b55"
    dependencies:
      component-emitter "~1.2.0"
      cookiejar "2.0.6"
      debug "2"
      extend "3.0.0"
      form-data "1.0.0-rc3"
      formidable "~1.0.14"
      methods "~1.1.1"
      mime "1.3.4"
      qs "2.3.3"
      readable-stream "1.0.27-1"
      reduce-component "1.0.1"
  
  supertest@^1.2.0:
    version "1.2.0"
    resolved "https://registry.yarnpkg.com/supertest/-/supertest-1.2.0.tgz#850a795f9068d2faf19e01799ff09962e0ce43be"
    dependencies:
      methods "1.x"
      superagent "^1.7.2"
  
  supports-color@1.2.0:
    version "1.2.0"
    resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-1.2.0.tgz#ff1ed1e61169d06b3cf2d588e188b18d8847e17e"
  
  to-iso-string@0.0.2:
    version "0.0.2"
    resolved "https://registry.yarnpkg.com/to-iso-string/-/to-iso-string-0.0.2.tgz#4dc19e664dfccbe25bd8db508b00c6da158255d1"
  
  tough-cookie@~2.3.3:
    version "2.3.4"
    resolved "https://registry.yarnpkg.com/tough-cookie/-/tough-cookie-2.3.4.tgz#ec60cee38ac675063ffc97a5c18970578ee83655"
    dependencies:
      punycode "^1.4.1"
  
  tunnel-agent@^0.6.0:
    version "0.6.0"
    resolved "https://registry.yarnpkg.com/tunnel-agent/-/tunnel-agent-0.6.0.tgz#27a5dea06b36b04a0a9966774b290868f0fc40fd"
    dependencies:
      safe-buffer "^5.0.1"
  
  tweetnacl@^0.14.3, tweetnacl@~0.14.0:
    version "0.14.5"
    resolved "https://registry.yarnpkg.com/tweetnacl/-/tweetnacl-0.14.5.tgz#5ae68177f192d4456269d108afa93ff8743f4f64"
  
  type-detect@0.1.1:
    version "0.1.1"
    resolved "https://registry.yarnpkg.com/type-detect/-/type-detect-0.1.1.tgz#0ba5ec2a885640e470ea4e8505971900dac58822"
  
  type-detect@^1.0.0:
    version "1.0.0"
    resolved "https://registry.yarnpkg.com/type-detect/-/type-detect-1.0.0.tgz#762217cc06db258ec48908a1298e8b95121e8ea2"
  
  uuid@^3.1.0:
    version "3.2.1"
    resolved "https://registry.yarnpkg.com/uuid/-/uuid-3.2.1.tgz#12c528bb9d58d0b9265d9a2f6f0fe8be17ff1f14"
  
  verror@1.10.0:
    version "1.10.0"
    resolved "https://registry.yarnpkg.com/verror/-/verror-1.10.0.tgz#3a105ca17053af55d6e270c1f8288682e18da400"
    dependencies:
      assert-plus "^1.0.0"
      core-util-is "1.0.2"
      extsprintf "^1.2.0"

Trace: 
  Error: Command failed.
  Exit code: 1
  Command: sh
  Arguments: -c ./node_modules/.bin/_mocha
  Directory: /Users/sarunyhotsuvannachoti/playground/node-slackr
  Output:
  
      at ProcessTermError.MessageError (/usr/local/Cellar/yarn/1.5.1/libexec/lib/cli.js:186:110)
      at new ProcessTermError (/usr/local/Cellar/yarn/1.5.1/libexec/lib/cli.js:226:113)
      at ChildProcess.<anonymous> (/usr/local/Cellar/yarn/1.5.1/libexec/lib/cli.js:30281:17)
      at emitTwo (events.js:125:13)
      at ChildProcess.emit (events.js:213:7)
      at maybeClose (internal/child_process.js:927:16)
      at Process.ChildProcess._handle.onexit (internal/child_process.js:211:5)