diff --git a/README.md b/README.md
index c4bc722..d5a5fe9 100644
--- a/README.md
+++ b/README.md
@@ -65,3 +65,8 @@ See also:
 
 - Custom formatters: https://github.com/cucumber/cucumber-js/blob/master/docs/custom_formatters.md
 - Built-in formatters: https://github.com/cucumber/cucumber-js/tree/master/src/formatter.
+
+### assertion
+
+This package contains some failing tests demonstrating object diffs provided by
+node's native asserts, chai and jest.
diff --git a/assertion/features/chai-variants.feature b/assertion/features/chai-variants.feature
new file mode 100644
index 0000000..0e163cb
--- /dev/null
+++ b/assertion/features/chai-variants.feature
@@ -0,0 +1,7 @@
+Feature: Chai variants
+	Scenario:
+		When I use chai
+		Then I can choose the expect syntax
+
+		When I use chai
+		Then I can choose the should syntax
diff --git a/assertion/features/failure.feature b/assertion/features/failure.feature
new file mode 100644
index 0000000..751fc73
--- /dev/null
+++ b/assertion/features/failure.feature
@@ -0,0 +1,12 @@
+Feature: Failure
+	Scenario:
+		When I use chai
+		Then I see chai diff on failure
+
+	Scenario:
+		When I use jest
+		Then I see jest diff on failure
+
+	Scenario:
+		When I use node
+		Then I see node diff on failure
diff --git a/assertion/features/steps/chai-expect.js b/assertion/features/steps/chai-expect.js
new file mode 100644
index 0000000..44e7c01
--- /dev/null
+++ b/assertion/features/steps/chai-expect.js
@@ -0,0 +1,6 @@
+const { expect } = require('chai')
+const { Then } = require('cucumber')
+
+Then('I can choose the expect syntax', function () {
+  expect(true).to.be.true
+})
diff --git a/assertion/features/steps/chai-failure.js b/assertion/features/steps/chai-failure.js
new file mode 100644
index 0000000..ea3d96e
--- /dev/null
+++ b/assertion/features/steps/chai-failure.js
@@ -0,0 +1,10 @@
+const { expect } = require('chai')
+const { When, Then } = require('cucumber')
+const compared = require('../support/compared')
+
+When('I use chai', function () {
+})
+
+Then('I see chai diff on failure', function () {
+ expect(compared.actual).to.deep.equal(compared.expected)
+})
diff --git a/assertion/features/steps/chai-should.js b/assertion/features/steps/chai-should.js
new file mode 100644
index 0000000..2d733e8
--- /dev/null
+++ b/assertion/features/steps/chai-should.js
@@ -0,0 +1,8 @@
+const { Then } = require('cucumber')
+require('chai').should()
+
+Then('I can choose the should syntax', function () {
+  const boolean = true
+
+  boolean.should.be.true
+})
diff --git a/assertion/features/steps/jest-failure.js b/assertion/features/steps/jest-failure.js
new file mode 100644
index 0000000..e222a7a
--- /dev/null
+++ b/assertion/features/steps/jest-failure.js
@@ -0,0 +1,10 @@
+const expect = require('expect')
+const { When, Then } = require('cucumber')
+const compared = require('../support/compared')
+
+When('I use jest', function () {
+})
+
+Then('I see jest diff on failure', function () {
+  expect(compared.actual).toEqual(compared.expected)
+})
diff --git a/assertion/features/steps/node-failure.js b/assertion/features/steps/node-failure.js
new file mode 100644
index 0000000..7816146
--- /dev/null
+++ b/assertion/features/steps/node-failure.js
@@ -0,0 +1,10 @@
+const assert = require('assert')
+const { When, Then } = require('cucumber')
+const compared = require('../support/compared')
+
+When('I use node', function () {
+})
+
+Then('I see node diff on failure', function () {
+  assert.equal(compared.actual, compared.expected)
+})
diff --git a/assertion/features/support/compared.js b/assertion/features/support/compared.js
new file mode 100644
index 0000000..9c8e70d
--- /dev/null
+++ b/assertion/features/support/compared.js
@@ -0,0 +1,9 @@
+module.exports = {
+  actual: {},
+  expected: [
+    {
+      author: 'Nicolaus Cusanus',
+      title: 'Die belehrte Unwissenheit'
+    }
+  ]
+}
diff --git a/assertion/package-lock.json b/assertion/package-lock.json
new file mode 100644
index 0000000..8f85234
--- /dev/null
+++ b/assertion/package-lock.json
@@ -0,0 +1,1171 @@
+{
+  "name": "assertion",
+  "version": "1.0.0",
+  "lockfileVersion": 1,
+  "requires": true,
+  "dependencies": {
+    "@babel/code-frame": {
+      "version": "7.0.0",
+      "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.0.0.tgz",
+      "integrity": "sha512-OfC2uemaknXr87bdLUkWog7nYuliM9Ij5HUcajsVcMCpQrcLmtxRbVFTIqmcSkSeYRBFBRxs2FiUqFJDLdiebA==",
+      "dev": true,
+      "requires": {
+        "@babel/highlight": "^7.0.0"
+      }
+    },
+    "@babel/highlight": {
+      "version": "7.0.0",
+      "resolved": "https://registry.npmjs.org/@babel/highlight/-/highlight-7.0.0.tgz",
+      "integrity": "sha512-UFMC4ZeFC48Tpvj7C8UgLvtkaUuovQX+5xNWrsIoMG8o2z+XFKjKaN9iVmS84dPwVN00W4wPmqvYoZF3EGAsfw==",
+      "dev": true,
+      "requires": {
+        "chalk": "^2.0.0",
+        "esutils": "^2.0.2",
+        "js-tokens": "^4.0.0"
+      }
+    },
+    "ansi-regex": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-3.0.0.tgz",
+      "integrity": "sha1-7QMXwyIGT3lGbAKWa922Bas32Zg=",
+      "dev": true
+    },
+    "ansi-styles": {
+      "version": "3.2.1",
+      "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-3.2.1.tgz",
+      "integrity": "sha512-VT0ZI6kZRdTh8YyJw3SMbYm/u+NqfsAxEpWO0Pf9sq8/e94WxxOpPKx9FR1FlyCtOVDNOQ+8ntlqFxiRc+r5qA==",
+      "dev": true,
+      "requires": {
+        "color-convert": "^1.9.0"
+      }
+    },
+    "any-promise": {
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/any-promise/-/any-promise-1.3.0.tgz",
+      "integrity": "sha1-q8av7tzqUugJzcA3au0845Y10X8=",
+      "dev": true
+    },
+    "arr-diff": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/arr-diff/-/arr-diff-2.0.0.tgz",
+      "integrity": "sha1-jzuCf5Vai9ZpaX5KQlasPOrjVs8=",
+      "dev": true,
+      "requires": {
+        "arr-flatten": "^1.0.1"
+      }
+    },
+    "arr-flatten": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/arr-flatten/-/arr-flatten-1.1.0.tgz",
+      "integrity": "sha512-L3hKV5R/p5o81R7O02IGnwpDmkp6E982XhtbuwSe3O4qOtMMMtodicASA1Cny2U+aCXcNpml+m4dPsvsJ3jatg==",
+      "dev": true
+    },
+    "array-unique": {
+      "version": "0.2.1",
+      "resolved": "https://registry.npmjs.org/array-unique/-/array-unique-0.2.1.tgz",
+      "integrity": "sha1-odl8yvy8JiXMcPrc6zalDFiwGlM=",
+      "dev": true
+    },
+    "assert-plus": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/assert-plus/-/assert-plus-1.0.0.tgz",
+      "integrity": "sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU=",
+      "dev": true
+    },
+    "assertion-error": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/assertion-error/-/assertion-error-1.1.0.tgz",
+      "integrity": "sha512-jgsaNduz+ndvGyFt3uSuWqvy4lCnIJiovtouQN5JZHOKCS2QuhEdbcQHFhVksz2N2U9hXJo8odG7ETyWlEeuDw==",
+      "dev": true
+    },
+    "assertion-error-formatter": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/assertion-error-formatter/-/assertion-error-formatter-2.0.1.tgz",
+      "integrity": "sha512-cjC3jUCh9spkroKue5PDSKH5RFQ/KNuZJhk3GwHYmB/8qqETxLOmMdLH+ohi/VukNzxDlMvIe7zScvLoOdhb6Q==",
+      "dev": true,
+      "requires": {
+        "diff": "^3.0.0",
+        "pad-right": "^0.2.2",
+        "repeat-string": "^1.6.1"
+      }
+    },
+    "babel-runtime": {
+      "version": "6.26.0",
+      "resolved": "https://registry.npmjs.org/babel-runtime/-/babel-runtime-6.26.0.tgz",
+      "integrity": "sha1-llxwWGaOgrVde/4E/yM3vItWR/4=",
+      "dev": true,
+      "requires": {
+        "core-js": "^2.4.0",
+        "regenerator-runtime": "^0.11.0"
+      }
+    },
+    "balanced-match": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
+      "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c=",
+      "dev": true
+    },
+    "becke-ch--regex--s0-0-v1--base--pl--lib": {
+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/becke-ch--regex--s0-0-v1--base--pl--lib/-/becke-ch--regex--s0-0-v1--base--pl--lib-1.4.0.tgz",
+      "integrity": "sha1-Qpzuu/pffpNueNc/vcfacWKyDiA=",
+      "dev": true
+    },
+    "bluebird": {
+      "version": "3.5.3",
+      "resolved": "https://registry.npmjs.org/bluebird/-/bluebird-3.5.3.tgz",
+      "integrity": "sha512-/qKPUQlaW1OyR51WeCPBvRnAlnZFUJkCSG5HzGnuIqhgyJtF+T94lFnn33eiazjRm2LAHVy2guNnaq48X9SJuw==",
+      "dev": true
+    },
+    "brace-expansion": {
+      "version": "1.1.11",
+      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
+      "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==",
+      "dev": true,
+      "requires": {
+        "balanced-match": "^1.0.0",
+        "concat-map": "0.0.1"
+      }
+    },
+    "braces": {
+      "version": "1.8.5",
+      "resolved": "https://registry.npmjs.org/braces/-/braces-1.8.5.tgz",
+      "integrity": "sha1-uneWLhLf+WnWt2cR6RS3N4V79qc=",
+      "dev": true,
+      "requires": {
+        "expand-range": "^1.8.1",
+        "preserve": "^0.2.0",
+        "repeat-element": "^1.1.2"
+      }
+    },
+    "chai": {
+      "version": "4.2.0",
+      "resolved": "https://registry.npmjs.org/chai/-/chai-4.2.0.tgz",
+      "integrity": "sha512-XQU3bhBukrOsQCuwZndwGcCVQHyZi53fQ6Ys1Fym7E4olpIqqZZhhoFJoaKVvV17lWQoXYwgWN2nF5crA8J2jw==",
+      "dev": true,
+      "requires": {
+        "assertion-error": "^1.1.0",
+        "check-error": "^1.0.2",
+        "deep-eql": "^3.0.1",
+        "get-func-name": "^2.0.0",
+        "pathval": "^1.1.0",
+        "type-detect": "^4.0.5"
+      }
+    },
+    "chalk": {
+      "version": "2.4.1",
+      "resolved": "https://registry.npmjs.org/chalk/-/chalk-2.4.1.tgz",
+      "integrity": "sha512-ObN6h1v2fTJSmUXoS3nMQ92LbDK9be4TV+6G+omQlGJFdcUX5heKi1LZ1YnRMIgwTLEj3E24bT6tYni50rlCfQ==",
+      "dev": true,
+      "requires": {
+        "ansi-styles": "^3.2.1",
+        "escape-string-regexp": "^1.0.5",
+        "supports-color": "^5.3.0"
+      }
+    },
+    "check-error": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/check-error/-/check-error-1.0.2.tgz",
+      "integrity": "sha1-V00xLt2Iu13YkS6Sht1sCu1KrII=",
+      "dev": true
+    },
+    "cli-table3": {
+      "version": "0.5.1",
+      "resolved": "https://registry.npmjs.org/cli-table3/-/cli-table3-0.5.1.tgz",
+      "integrity": "sha512-7Qg2Jrep1S/+Q3EceiZtQcDPWxhAvBw+ERf1162v4sikJrvojMHFqXt8QIVha8UlH9rgU0BeWPytZ9/TzYqlUw==",
+      "dev": true,
+      "requires": {
+        "colors": "^1.1.2",
+        "object-assign": "^4.1.0",
+        "string-width": "^2.1.1"
+      }
+    },
+    "color-convert": {
+      "version": "1.9.3",
+      "resolved": "https://registry.npmjs.org/color-convert/-/color-convert-1.9.3.tgz",
+      "integrity": "sha512-QfAUtd+vFdAtFQcC8CCyYt1fYWxSqAiK2cSD6zDB8N3cpsEBAvRxp9zOGg6G/SHHJYAT88/az/IuDGALsNVbGg==",
+      "dev": true,
+      "requires": {
+        "color-name": "1.1.3"
+      }
+    },
+    "color-name": {
+      "version": "1.1.3",
+      "resolved": "https://registry.npmjs.org/color-name/-/color-name-1.1.3.tgz",
+      "integrity": "sha1-p9BVi9icQveV3UIyj3QIMcpTvCU=",
+      "dev": true
+    },
+    "colors": {
+      "version": "1.3.3",
+      "resolved": "https://registry.npmjs.org/colors/-/colors-1.3.3.tgz",
+      "integrity": "sha512-mmGt/1pZqYRjMxB1axhTo16/snVZ5krrKkcmMeVKxzECMMXoCgnvTPp10QgHfcbQZw8Dq2jMNG6je4JlWU0gWg==",
+      "dev": true
+    },
+    "commander": {
+      "version": "2.19.0",
+      "resolved": "https://registry.npmjs.org/commander/-/commander-2.19.0.tgz",
+      "integrity": "sha512-6tvAOO+D6OENvRAh524Dh9jcfKTYDQAqvqezbCW82xj5X0pSrcpxtvRKHLG0yBY6SD7PSDrJaj+0AiOcKVd1Xg==",
+      "dev": true
+    },
+    "concat-map": {
+      "version": "0.0.1",
+      "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
+      "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s=",
+      "dev": true
+    },
+    "core-js": {
+      "version": "2.6.1",
+      "resolved": "https://registry.npmjs.org/core-js/-/core-js-2.6.1.tgz",
+      "integrity": "sha512-L72mmmEayPJBejKIWe2pYtGis5r0tQ5NaJekdhyXgeMQTpJoBsH0NL4ElY2LfSoV15xeQWKQ+XTTOZdyero5Xg==",
+      "dev": true
+    },
+    "core-util-is": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/core-util-is/-/core-util-is-1.0.2.tgz",
+      "integrity": "sha1-tf1UIgqivFq1eqtxQMlAdUUDwac=",
+      "dev": true
+    },
+    "cross-spawn": {
+      "version": "6.0.5",
+      "resolved": "https://registry.npmjs.org/cross-spawn/-/cross-spawn-6.0.5.tgz",
+      "integrity": "sha512-eTVLrBSt7fjbDygz805pMnstIs2VTBNkRm0qxZd+M7A5XDdxVRWO5MxGBXZhjY4cqLYLdtrGqRf8mBPmzwSpWQ==",
+      "dev": true,
+      "requires": {
+        "nice-try": "^1.0.4",
+        "path-key": "^2.0.1",
+        "semver": "^5.5.0",
+        "shebang-command": "^1.2.0",
+        "which": "^1.2.9"
+      }
+    },
+    "cucumber": {
+      "version": "5.0.3",
+      "resolved": "https://registry.npmjs.org/cucumber/-/cucumber-5.0.3.tgz",
+      "integrity": "sha512-FsOKcEquPTVzK2sDqshI3Bw8ETztNIrMQ5+Ph8Z8QNaStl7cvIS3M9/T+9zeXvadPJX0jUWkbWcJ91x4gBw9Fg==",
+      "dev": true,
+      "requires": {
+        "assertion-error-formatter": "^2.0.1",
+        "babel-runtime": "^6.11.6",
+        "bluebird": "^3.4.1",
+        "cli-table3": "^0.5.1",
+        "colors": "^1.1.2",
+        "commander": "^2.9.0",
+        "cross-spawn": "^6.0.5",
+        "cucumber-expressions": "^6.0.0",
+        "cucumber-tag-expressions": "^1.1.1",
+        "duration": "^0.2.1",
+        "escape-string-regexp": "^1.0.5",
+        "figures": "2.0.0",
+        "gherkin": "^5.0.0",
+        "glob": "^7.1.3",
+        "indent-string": "^3.1.0",
+        "is-generator": "^1.0.2",
+        "is-stream": "^1.1.0",
+        "knuth-shuffle-seeded": "^1.0.6",
+        "lodash": "^4.17.10",
+        "mz": "^2.4.0",
+        "progress": "^2.0.0",
+        "resolve": "^1.3.3",
+        "serialize-error": "^2.1.0",
+        "stack-chain": "^2.0.0",
+        "stacktrace-js": "^2.0.0",
+        "string-argv": "0.1.1",
+        "title-case": "^2.1.1",
+        "util-arity": "^1.0.2",
+        "verror": "^1.9.0"
+      }
+    },
+    "cucumber-expressions": {
+      "version": "6.0.1",
+      "resolved": "https://registry.npmjs.org/cucumber-expressions/-/cucumber-expressions-6.0.1.tgz",
+      "integrity": "sha1-R8nFc3gcL/ch161bLNHJf0OZq44=",
+      "dev": true,
+      "requires": {
+        "becke-ch--regex--s0-0-v1--base--pl--lib": "^1.2.0"
+      }
+    },
+    "cucumber-tag-expressions": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/cucumber-tag-expressions/-/cucumber-tag-expressions-1.1.1.tgz",
+      "integrity": "sha1-f1x7cACbwrZmWRv+ZIVFeL7e6Fo=",
+      "dev": true
+    },
+    "d": {
+      "version": "1.0.0",
+      "resolved": "http://registry.npmjs.org/d/-/d-1.0.0.tgz",
+      "integrity": "sha1-dUu1v+VUUdpppYuU1F9MWwRi1Y8=",
+      "dev": true,
+      "requires": {
+        "es5-ext": "^0.10.9"
+      }
+    },
+    "deep-eql": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/deep-eql/-/deep-eql-3.0.1.tgz",
+      "integrity": "sha512-+QeIQyN5ZuO+3Uk5DYh6/1eKO0m0YmJFGNmFHGACpf1ClL1nmlV/p4gNgbl2pJGxgXb4faqo6UE+M5ACEMyVcw==",
+      "dev": true,
+      "requires": {
+        "type-detect": "^4.0.0"
+      }
+    },
+    "diff": {
+      "version": "3.5.0",
+      "resolved": "https://registry.npmjs.org/diff/-/diff-3.5.0.tgz",
+      "integrity": "sha512-A46qtFgd+g7pDZinpnwiRJtxbC1hpgf0uzP3iG89scHk0AUC7A1TGxf5OiiOUv/JMZR8GOt8hL900hV0bOy5xA==",
+      "dev": true
+    },
+    "duration": {
+      "version": "0.2.2",
+      "resolved": "https://registry.npmjs.org/duration/-/duration-0.2.2.tgz",
+      "integrity": "sha512-06kgtea+bGreF5eKYgI/36A6pLXggY7oR4p1pq4SmdFBn1ReOL5D8RhG64VrqfTTKNucqqtBAwEj8aB88mcqrg==",
+      "dev": true,
+      "requires": {
+        "d": "1",
+        "es5-ext": "~0.10.46"
+      }
+    },
+    "error-stack-parser": {
+      "version": "2.0.2",
+      "resolved": "https://registry.npmjs.org/error-stack-parser/-/error-stack-parser-2.0.2.tgz",
+      "integrity": "sha512-E1fPutRDdIj/hohG0UpT5mayXNCxXP9d+snxFsPU9X0XgccOumKraa3juDMwTUyi7+Bu5+mCGagjg4IYeNbOdw==",
+      "dev": true,
+      "requires": {
+        "stackframe": "^1.0.4"
+      }
+    },
+    "es5-ext": {
+      "version": "0.10.46",
+      "resolved": "https://registry.npmjs.org/es5-ext/-/es5-ext-0.10.46.tgz",
+      "integrity": "sha512-24XxRvJXNFwEMpJb3nOkiRJKRoupmjYmOPVlI65Qy2SrtxwOTB+g6ODjBKOtwEHbYrhWRty9xxOWLNdClT2djw==",
+      "dev": true,
+      "requires": {
+        "es6-iterator": "~2.0.3",
+        "es6-symbol": "~3.1.1",
+        "next-tick": "1"
+      }
+    },
+    "es6-iterator": {
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/es6-iterator/-/es6-iterator-2.0.3.tgz",
+      "integrity": "sha1-p96IkUGgWpSwhUQDstCg+/qY87c=",
+      "dev": true,
+      "requires": {
+        "d": "1",
+        "es5-ext": "^0.10.35",
+        "es6-symbol": "^3.1.1"
+      }
+    },
+    "es6-symbol": {
+      "version": "3.1.1",
+      "resolved": "https://registry.npmjs.org/es6-symbol/-/es6-symbol-3.1.1.tgz",
+      "integrity": "sha1-vwDvT9q2uhtG7Le2KbTH7VcVzHc=",
+      "dev": true,
+      "requires": {
+        "d": "1",
+        "es5-ext": "~0.10.14"
+      }
+    },
+    "escape-string-regexp": {
+      "version": "1.0.5",
+      "resolved": "https://registry.npmjs.org/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz",
+      "integrity": "sha1-G2HAViGQqN/2rjuyzwIAyhMLhtQ=",
+      "dev": true
+    },
+    "esutils": {
+      "version": "2.0.2",
+      "resolved": "https://registry.npmjs.org/esutils/-/esutils-2.0.2.tgz",
+      "integrity": "sha1-Cr9PHKpbyx96nYrMbepPqqBLrJs=",
+      "dev": true
+    },
+    "expand-brackets": {
+      "version": "0.1.5",
+      "resolved": "https://registry.npmjs.org/expand-brackets/-/expand-brackets-0.1.5.tgz",
+      "integrity": "sha1-3wcoTjQqgHzXM6xa9yQR5YHRF3s=",
+      "dev": true,
+      "requires": {
+        "is-posix-bracket": "^0.1.0"
+      }
+    },
+    "expand-range": {
+      "version": "1.8.2",
+      "resolved": "http://registry.npmjs.org/expand-range/-/expand-range-1.8.2.tgz",
+      "integrity": "sha1-opnv/TNf4nIeuujiV+x5ZE/IUzc=",
+      "dev": true,
+      "requires": {
+        "fill-range": "^2.1.0"
+      }
+    },
+    "expect": {
+      "version": "23.6.0",
+      "resolved": "https://registry.npmjs.org/expect/-/expect-23.6.0.tgz",
+      "integrity": "sha512-dgSoOHgmtn/aDGRVFWclQyPDKl2CQRq0hmIEoUAuQs/2rn2NcvCWcSCovm6BLeuB/7EZuLGu2QfnR+qRt5OM4w==",
+      "dev": true,
+      "requires": {
+        "ansi-styles": "^3.2.0",
+        "jest-diff": "^23.6.0",
+        "jest-get-type": "^22.1.0",
+        "jest-matcher-utils": "^23.6.0",
+        "jest-message-util": "^23.4.0",
+        "jest-regex-util": "^23.3.0"
+      }
+    },
+    "extglob": {
+      "version": "0.3.2",
+      "resolved": "https://registry.npmjs.org/extglob/-/extglob-0.3.2.tgz",
+      "integrity": "sha1-Lhj/PS9JqydlzskCPwEdqo2DSaE=",
+      "dev": true,
+      "requires": {
+        "is-extglob": "^1.0.0"
+      }
+    },
+    "extsprintf": {
+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/extsprintf/-/extsprintf-1.4.0.tgz",
+      "integrity": "sha1-4mifjzVvrWLMplo6kcXfX5VRaS8=",
+      "dev": true
+    },
+    "figures": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/figures/-/figures-2.0.0.tgz",
+      "integrity": "sha1-OrGi0qYsi/tDGgyUy3l6L84nyWI=",
+      "dev": true,
+      "requires": {
+        "escape-string-regexp": "^1.0.5"
+      }
+    },
+    "filename-regex": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/filename-regex/-/filename-regex-2.0.1.tgz",
+      "integrity": "sha1-wcS5vuPglyXdsQa3XB4wH+LxiyY=",
+      "dev": true
+    },
+    "fill-range": {
+      "version": "2.2.4",
+      "resolved": "https://registry.npmjs.org/fill-range/-/fill-range-2.2.4.tgz",
+      "integrity": "sha512-cnrcCbj01+j2gTG921VZPnHbjmdAf8oQV/iGeV2kZxGSyfYjjTyY79ErsK1WJWMpw6DaApEX72binqJE+/d+5Q==",
+      "dev": true,
+      "requires": {
+        "is-number": "^2.1.0",
+        "isobject": "^2.0.0",
+        "randomatic": "^3.0.0",
+        "repeat-element": "^1.1.2",
+        "repeat-string": "^1.5.2"
+      }
+    },
+    "for-in": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/for-in/-/for-in-1.0.2.tgz",
+      "integrity": "sha1-gQaNKVqBQuwKxybG4iAMMPttXoA=",
+      "dev": true
+    },
+    "for-own": {
+      "version": "0.1.5",
+      "resolved": "https://registry.npmjs.org/for-own/-/for-own-0.1.5.tgz",
+      "integrity": "sha1-UmXGgaTylNq78XyVCbZ2OqhFEM4=",
+      "dev": true,
+      "requires": {
+        "for-in": "^1.0.1"
+      }
+    },
+    "fs.realpath": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/fs.realpath/-/fs.realpath-1.0.0.tgz",
+      "integrity": "sha1-FQStJSMVjKpA20onh8sBQRmU6k8=",
+      "dev": true
+    },
+    "get-func-name": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/get-func-name/-/get-func-name-2.0.0.tgz",
+      "integrity": "sha1-6td0q+5y4gQJQzoGY2YCPdaIekE=",
+      "dev": true
+    },
+    "gherkin": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/gherkin/-/gherkin-5.1.0.tgz",
+      "integrity": "sha1-aEu7A63STq9731RPWAM+so+zxtU=",
+      "dev": true
+    },
+    "glob": {
+      "version": "7.1.3",
+      "resolved": "https://registry.npmjs.org/glob/-/glob-7.1.3.tgz",
+      "integrity": "sha512-vcfuiIxogLV4DlGBHIUOwI0IbrJ8HWPc4MU7HzviGeNho/UJDfi6B5p3sHeWIQ0KGIU0Jpxi5ZHxemQfLkkAwQ==",
+      "dev": true,
+      "requires": {
+        "fs.realpath": "^1.0.0",
+        "inflight": "^1.0.4",
+        "inherits": "2",
+        "minimatch": "^3.0.4",
+        "once": "^1.3.0",
+        "path-is-absolute": "^1.0.0"
+      }
+    },
+    "glob-base": {
+      "version": "0.3.0",
+      "resolved": "https://registry.npmjs.org/glob-base/-/glob-base-0.3.0.tgz",
+      "integrity": "sha1-27Fk9iIbHAscz4Kuoyi0l98Oo8Q=",
+      "dev": true,
+      "requires": {
+        "glob-parent": "^2.0.0",
+        "is-glob": "^2.0.0"
+      }
+    },
+    "glob-parent": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/glob-parent/-/glob-parent-2.0.0.tgz",
+      "integrity": "sha1-gTg9ctsFT8zPUzbaqQLxgvbtuyg=",
+      "dev": true,
+      "requires": {
+        "is-glob": "^2.0.0"
+      }
+    },
+    "has-flag": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-3.0.0.tgz",
+      "integrity": "sha1-tdRU3CGZriJWmfNGfloH87lVuv0=",
+      "dev": true
+    },
+    "indent-string": {
+      "version": "3.2.0",
+      "resolved": "https://registry.npmjs.org/indent-string/-/indent-string-3.2.0.tgz",
+      "integrity": "sha1-Sl/W0nzDMvN+VBmlBNu4NxBckok=",
+      "dev": true
+    },
+    "inflight": {
+      "version": "1.0.6",
+      "resolved": "https://registry.npmjs.org/inflight/-/inflight-1.0.6.tgz",
+      "integrity": "sha1-Sb1jMdfQLQwJvJEKEHW6gWW1bfk=",
+      "dev": true,
+      "requires": {
+        "once": "^1.3.0",
+        "wrappy": "1"
+      }
+    },
+    "inherits": {
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.3.tgz",
+      "integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=",
+      "dev": true
+    },
+    "is-buffer": {
+      "version": "1.1.6",
+      "resolved": "https://registry.npmjs.org/is-buffer/-/is-buffer-1.1.6.tgz",
+      "integrity": "sha512-NcdALwpXkTm5Zvvbk7owOUSvVvBKDgKP5/ewfXEznmQFfs4ZRmanOeKBTjRVjka3QFoN6XJ+9F3USqfHqTaU5w==",
+      "dev": true
+    },
+    "is-dotfile": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/is-dotfile/-/is-dotfile-1.0.3.tgz",
+      "integrity": "sha1-pqLzL/0t+wT1yiXs0Pa4PPeYoeE=",
+      "dev": true
+    },
+    "is-equal-shallow": {
+      "version": "0.1.3",
+      "resolved": "https://registry.npmjs.org/is-equal-shallow/-/is-equal-shallow-0.1.3.tgz",
+      "integrity": "sha1-IjgJj8Ih3gvPpdnqxMRdY4qhxTQ=",
+      "dev": true,
+      "requires": {
+        "is-primitive": "^2.0.0"
+      }
+    },
+    "is-extendable": {
+      "version": "0.1.1",
+      "resolved": "https://registry.npmjs.org/is-extendable/-/is-extendable-0.1.1.tgz",
+      "integrity": "sha1-YrEQ4omkcUGOPsNqYX1HLjAd/Ik=",
+      "dev": true
+    },
+    "is-extglob": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/is-extglob/-/is-extglob-1.0.0.tgz",
+      "integrity": "sha1-rEaBd8SUNAWgkvyPKXYMb/xiBsA=",
+      "dev": true
+    },
+    "is-fullwidth-code-point": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-2.0.0.tgz",
+      "integrity": "sha1-o7MKXE8ZkYMWeqq5O+764937ZU8=",
+      "dev": true
+    },
+    "is-generator": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/is-generator/-/is-generator-1.0.3.tgz",
+      "integrity": "sha1-wUwhBX7TbjKNuANHlmxpP4hjifM=",
+      "dev": true
+    },
+    "is-glob": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/is-glob/-/is-glob-2.0.1.tgz",
+      "integrity": "sha1-0Jb5JqPe1WAPP9/ZEZjLCIjC2GM=",
+      "dev": true,
+      "requires": {
+        "is-extglob": "^1.0.0"
+      }
+    },
+    "is-number": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/is-number/-/is-number-2.1.0.tgz",
+      "integrity": "sha1-Afy7s5NGOlSPL0ZszhbezknbkI8=",
+      "dev": true,
+      "requires": {
+        "kind-of": "^3.0.2"
+      }
+    },
+    "is-posix-bracket": {
+      "version": "0.1.1",
+      "resolved": "https://registry.npmjs.org/is-posix-bracket/-/is-posix-bracket-0.1.1.tgz",
+      "integrity": "sha1-MzTceXdDaOkvAW5vvAqI9c1ua8Q=",
+      "dev": true
+    },
+    "is-primitive": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/is-primitive/-/is-primitive-2.0.0.tgz",
+      "integrity": "sha1-IHurkWOEmcB7Kt8kCkGochADRXU=",
+      "dev": true
+    },
+    "is-stream": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/is-stream/-/is-stream-1.1.0.tgz",
+      "integrity": "sha1-EtSj3U5o4Lec6428hBc66A2RykQ=",
+      "dev": true
+    },
+    "isarray": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/isarray/-/isarray-1.0.0.tgz",
+      "integrity": "sha1-u5NdSFgsuhaMBoNJV6VKPgcSTxE=",
+      "dev": true
+    },
+    "isexe": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/isexe/-/isexe-2.0.0.tgz",
+      "integrity": "sha1-6PvzdNxVb/iUehDcsFctYz8s+hA=",
+      "dev": true
+    },
+    "isobject": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/isobject/-/isobject-2.1.0.tgz",
+      "integrity": "sha1-8GVWEJaj8dou9GJy+BXIQNh+DIk=",
+      "dev": true,
+      "requires": {
+        "isarray": "1.0.0"
+      }
+    },
+    "jest-diff": {
+      "version": "23.6.0",
+      "resolved": "https://registry.npmjs.org/jest-diff/-/jest-diff-23.6.0.tgz",
+      "integrity": "sha512-Gz9l5Ov+X3aL5L37IT+8hoCUsof1CVYBb2QEkOupK64XyRR3h+uRpYIm97K7sY8diFxowR8pIGEdyfMKTixo3g==",
+      "dev": true,
+      "requires": {
+        "chalk": "^2.0.1",
+        "diff": "^3.2.0",
+        "jest-get-type": "^22.1.0",
+        "pretty-format": "^23.6.0"
+      }
+    },
+    "jest-get-type": {
+      "version": "22.4.3",
+      "resolved": "http://registry.npmjs.org/jest-get-type/-/jest-get-type-22.4.3.tgz",
+      "integrity": "sha512-/jsz0Y+V29w1chdXVygEKSz2nBoHoYqNShPe+QgxSNjAuP1i8+k4LbQNrfoliKej0P45sivkSCh7yiD6ubHS3w==",
+      "dev": true
+    },
+    "jest-matcher-utils": {
+      "version": "23.6.0",
+      "resolved": "https://registry.npmjs.org/jest-matcher-utils/-/jest-matcher-utils-23.6.0.tgz",
+      "integrity": "sha512-rosyCHQfBcol4NsckTn01cdelzWLU9Cq7aaigDf8VwwpIRvWE/9zLgX2bON+FkEW69/0UuYslUe22SOdEf2nog==",
+      "dev": true,
+      "requires": {
+        "chalk": "^2.0.1",
+        "jest-get-type": "^22.1.0",
+        "pretty-format": "^23.6.0"
+      }
+    },
+    "jest-message-util": {
+      "version": "23.4.0",
+      "resolved": "https://registry.npmjs.org/jest-message-util/-/jest-message-util-23.4.0.tgz",
+      "integrity": "sha1-F2EMUJQjSVCNAaPR4L2iwHkIap8=",
+      "dev": true,
+      "requires": {
+        "@babel/code-frame": "^7.0.0-beta.35",
+        "chalk": "^2.0.1",
+        "micromatch": "^2.3.11",
+        "slash": "^1.0.0",
+        "stack-utils": "^1.0.1"
+      }
+    },
+    "jest-regex-util": {
+      "version": "23.3.0",
+      "resolved": "https://registry.npmjs.org/jest-regex-util/-/jest-regex-util-23.3.0.tgz",
+      "integrity": "sha1-X4ZylUfCeFxAAs6qj4Sf6MpHG8U=",
+      "dev": true
+    },
+    "js-tokens": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/js-tokens/-/js-tokens-4.0.0.tgz",
+      "integrity": "sha512-RdJUflcE3cUzKiMqQgsCu06FPu9UdIJO0beYbPhHN4k6apgJtifcoCtT9bcxOpYBtpD2kCM6Sbzg4CausW/PKQ==",
+      "dev": true
+    },
+    "kind-of": {
+      "version": "3.2.2",
+      "resolved": "https://registry.npmjs.org/kind-of/-/kind-of-3.2.2.tgz",
+      "integrity": "sha1-MeohpzS6ubuw8yRm2JOupR5KPGQ=",
+      "dev": true,
+      "requires": {
+        "is-buffer": "^1.1.5"
+      }
+    },
+    "knuth-shuffle-seeded": {
+      "version": "1.0.6",
+      "resolved": "https://registry.npmjs.org/knuth-shuffle-seeded/-/knuth-shuffle-seeded-1.0.6.tgz",
+      "integrity": "sha1-AfG2VzOqdUDuCNiwF0Fk0iCB5OE=",
+      "dev": true,
+      "requires": {
+        "seed-random": "~2.2.0"
+      }
+    },
+    "lodash": {
+      "version": "4.17.11",
+      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.11.tgz",
+      "integrity": "sha512-cQKh8igo5QUhZ7lg38DYWAxMvjSAKG0A8wGSVimP07SIUEK2UO+arSRKbRZWtelMtN5V0Hkwh5ryOto/SshYIg==",
+      "dev": true
+    },
+    "lower-case": {
+      "version": "1.1.4",
+      "resolved": "https://registry.npmjs.org/lower-case/-/lower-case-1.1.4.tgz",
+      "integrity": "sha1-miyr0bno4K6ZOkv31YdcOcQujqw=",
+      "dev": true
+    },
+    "math-random": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/math-random/-/math-random-1.0.1.tgz",
+      "integrity": "sha1-izqsWIuKZuSXXjzepn97sylgH6w=",
+      "dev": true
+    },
+    "micromatch": {
+      "version": "2.3.11",
+      "resolved": "https://registry.npmjs.org/micromatch/-/micromatch-2.3.11.tgz",
+      "integrity": "sha1-hmd8l9FyCzY0MdBNDRUpO9OMFWU=",
+      "dev": true,
+      "requires": {
+        "arr-diff": "^2.0.0",
+        "array-unique": "^0.2.1",
+        "braces": "^1.8.2",
+        "expand-brackets": "^0.1.4",
+        "extglob": "^0.3.1",
+        "filename-regex": "^2.0.0",
+        "is-extglob": "^1.0.0",
+        "is-glob": "^2.0.1",
+        "kind-of": "^3.0.2",
+        "normalize-path": "^2.0.1",
+        "object.omit": "^2.0.0",
+        "parse-glob": "^3.0.4",
+        "regex-cache": "^0.4.2"
+      }
+    },
+    "minimatch": {
+      "version": "3.0.4",
+      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.0.4.tgz",
+      "integrity": "sha512-yJHVQEhyqPLUTgt9B83PXu6W3rx4MvvHvSUvToogpwoGDOUQ+yDrR0HRot+yOCdCO7u4hX3pWft6kWBBcqh0UA==",
+      "dev": true,
+      "requires": {
+        "brace-expansion": "^1.1.7"
+      }
+    },
+    "mz": {
+      "version": "2.7.0",
+      "resolved": "https://registry.npmjs.org/mz/-/mz-2.7.0.tgz",
+      "integrity": "sha512-z81GNO7nnYMEhrGh9LeymoE4+Yr0Wn5McHIZMK5cfQCl+NDX08sCZgUc9/6MHni9IWuFLm1Z3HTCXu2z9fN62Q==",
+      "dev": true,
+      "requires": {
+        "any-promise": "^1.0.0",
+        "object-assign": "^4.0.1",
+        "thenify-all": "^1.0.0"
+      }
+    },
+    "next-tick": {
+      "version": "1.0.0",
+      "resolved": "http://registry.npmjs.org/next-tick/-/next-tick-1.0.0.tgz",
+      "integrity": "sha1-yobR/ogoFpsBICCOPchCS524NCw=",
+      "dev": true
+    },
+    "nice-try": {
+      "version": "1.0.5",
+      "resolved": "https://registry.npmjs.org/nice-try/-/nice-try-1.0.5.tgz",
+      "integrity": "sha512-1nh45deeb5olNY7eX82BkPO7SSxR5SSYJiPTrTdFUVYwAl8CKMA5N9PjTYkHiRjisVcxcQ1HXdLhx2qxxJzLNQ==",
+      "dev": true
+    },
+    "no-case": {
+      "version": "2.3.2",
+      "resolved": "https://registry.npmjs.org/no-case/-/no-case-2.3.2.tgz",
+      "integrity": "sha512-rmTZ9kz+f3rCvK2TD1Ue/oZlns7OGoIWP4fc3llxxRXlOkHKoWPPWJOfFYpITabSow43QJbRIoHQXtt10VldyQ==",
+      "dev": true,
+      "requires": {
+        "lower-case": "^1.1.1"
+      }
+    },
+    "normalize-path": {
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/normalize-path/-/normalize-path-2.1.1.tgz",
+      "integrity": "sha1-GrKLVW4Zg2Oowab35vogE3/mrtk=",
+      "dev": true,
+      "requires": {
+        "remove-trailing-separator": "^1.0.1"
+      }
+    },
+    "object-assign": {
+      "version": "4.1.1",
+      "resolved": "https://registry.npmjs.org/object-assign/-/object-assign-4.1.1.tgz",
+      "integrity": "sha1-IQmtx5ZYh8/AXLvUQsrIv7s2CGM=",
+      "dev": true
+    },
+    "object.omit": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/object.omit/-/object.omit-2.0.1.tgz",
+      "integrity": "sha1-Gpx0SCnznbuFjHbKNXmuKlTr0fo=",
+      "dev": true,
+      "requires": {
+        "for-own": "^0.1.4",
+        "is-extendable": "^0.1.1"
+      }
+    },
+    "once": {
+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/once/-/once-1.4.0.tgz",
+      "integrity": "sha1-WDsap3WWHUsROsF9nFC6753Xa9E=",
+      "dev": true,
+      "requires": {
+        "wrappy": "1"
+      }
+    },
+    "pad-right": {
+      "version": "0.2.2",
+      "resolved": "https://registry.npmjs.org/pad-right/-/pad-right-0.2.2.tgz",
+      "integrity": "sha1-b7ySQEXSRPKiokRQMGDTv8YAl3Q=",
+      "dev": true,
+      "requires": {
+        "repeat-string": "^1.5.2"
+      }
+    },
+    "parse-glob": {
+      "version": "3.0.4",
+      "resolved": "https://registry.npmjs.org/parse-glob/-/parse-glob-3.0.4.tgz",
+      "integrity": "sha1-ssN2z7EfNVE7rdFz7wu246OIORw=",
+      "dev": true,
+      "requires": {
+        "glob-base": "^0.3.0",
+        "is-dotfile": "^1.0.0",
+        "is-extglob": "^1.0.0",
+        "is-glob": "^2.0.0"
+      }
+    },
+    "path-is-absolute": {
+      "version": "1.0.1",
+      "resolved": "http://registry.npmjs.org/path-is-absolute/-/path-is-absolute-1.0.1.tgz",
+      "integrity": "sha1-F0uSaHNVNP+8es5r9TpanhtcX18=",
+      "dev": true
+    },
+    "path-key": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/path-key/-/path-key-2.0.1.tgz",
+      "integrity": "sha1-QRyttXTFoUDTpLGRDUDYDMn0C0A=",
+      "dev": true
+    },
+    "path-parse": {
+      "version": "1.0.6",
+      "resolved": "https://registry.npmjs.org/path-parse/-/path-parse-1.0.6.tgz",
+      "integrity": "sha512-GSmOT2EbHrINBf9SR7CDELwlJ8AENk3Qn7OikK4nFYAu3Ote2+JYNVvkpAEQm3/TLNEJFD/xZJjzyxg3KBWOzw==",
+      "dev": true
+    },
+    "pathval": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/pathval/-/pathval-1.1.0.tgz",
+      "integrity": "sha1-uULm1L3mUwBe9rcTYd74cn0GReA=",
+      "dev": true
+    },
+    "preserve": {
+      "version": "0.2.0",
+      "resolved": "https://registry.npmjs.org/preserve/-/preserve-0.2.0.tgz",
+      "integrity": "sha1-gV7R9uvGWSb4ZbMQwHE7yzMVzks=",
+      "dev": true
+    },
+    "pretty-format": {
+      "version": "23.6.0",
+      "resolved": "https://registry.npmjs.org/pretty-format/-/pretty-format-23.6.0.tgz",
+      "integrity": "sha512-zf9NV1NSlDLDjycnwm6hpFATCGl/K1lt0R/GdkAK2O5LN/rwJoB+Mh93gGJjut4YbmecbfgLWVGSTCr0Ewvvbw==",
+      "dev": true,
+      "requires": {
+        "ansi-regex": "^3.0.0",
+        "ansi-styles": "^3.2.0"
+      }
+    },
+    "progress": {
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/progress/-/progress-2.0.3.tgz",
+      "integrity": "sha512-7PiHtLll5LdnKIMw100I+8xJXR5gW2QwWYkT6iJva0bXitZKa/XMrSbdmg3r2Xnaidz9Qumd0VPaMrZlF9V9sA==",
+      "dev": true
+    },
+    "randomatic": {
+      "version": "3.1.1",
+      "resolved": "https://registry.npmjs.org/randomatic/-/randomatic-3.1.1.tgz",
+      "integrity": "sha512-TuDE5KxZ0J461RVjrJZCJc+J+zCkTb1MbH9AQUq68sMhOMcy9jLcb3BrZKgp9q9Ncltdg4QVqWrH02W2EFFVYw==",
+      "dev": true,
+      "requires": {
+        "is-number": "^4.0.0",
+        "kind-of": "^6.0.0",
+        "math-random": "^1.0.1"
+      },
+      "dependencies": {
+        "is-number": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/is-number/-/is-number-4.0.0.tgz",
+          "integrity": "sha512-rSklcAIlf1OmFdyAqbnWTLVelsQ58uvZ66S/ZyawjWqIviTWCjg2PzVGw8WUA+nNuPTqb4wgA+NszrJ+08LlgQ==",
+          "dev": true
+        },
+        "kind-of": {
+          "version": "6.0.2",
+          "resolved": "https://registry.npmjs.org/kind-of/-/kind-of-6.0.2.tgz",
+          "integrity": "sha512-s5kLOcnH0XqDO+FvuaLX8DDjZ18CGFk7VygH40QoKPUQhW4e2rvM0rwUq0t8IQDOwYSeLK01U90OjzBTme2QqA==",
+          "dev": true
+        }
+      }
+    },
+    "regenerator-runtime": {
+      "version": "0.11.1",
+      "resolved": "https://registry.npmjs.org/regenerator-runtime/-/regenerator-runtime-0.11.1.tgz",
+      "integrity": "sha512-MguG95oij0fC3QV3URf4V2SDYGJhJnJGqvIIgdECeODCT98wSWDAJ94SSuVpYQUoTcGUIL6L4yNB7j1DFFHSBg==",
+      "dev": true
+    },
+    "regex-cache": {
+      "version": "0.4.4",
+      "resolved": "https://registry.npmjs.org/regex-cache/-/regex-cache-0.4.4.tgz",
+      "integrity": "sha512-nVIZwtCjkC9YgvWkpM55B5rBhBYRZhAaJbgcFYXXsHnbZ9UZI9nnVWYZpBlCqv9ho2eZryPnWrZGsOdPwVWXWQ==",
+      "dev": true,
+      "requires": {
+        "is-equal-shallow": "^0.1.3"
+      }
+    },
+    "remove-trailing-separator": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/remove-trailing-separator/-/remove-trailing-separator-1.1.0.tgz",
+      "integrity": "sha1-wkvOKig62tW8P1jg1IJJuSN52O8=",
+      "dev": true
+    },
+    "repeat-element": {
+      "version": "1.1.3",
+      "resolved": "https://registry.npmjs.org/repeat-element/-/repeat-element-1.1.3.tgz",
+      "integrity": "sha512-ahGq0ZnV5m5XtZLMb+vP76kcAM5nkLqk0lpqAuojSKGgQtn4eRi4ZZGm2olo2zKFH+sMsWaqOCW1dqAnOru72g==",
+      "dev": true
+    },
+    "repeat-string": {
+      "version": "1.6.1",
+      "resolved": "https://registry.npmjs.org/repeat-string/-/repeat-string-1.6.1.tgz",
+      "integrity": "sha1-jcrkcOHIirwtYA//Sndihtp15jc=",
+      "dev": true
+    },
+    "resolve": {
+      "version": "1.9.0",
+      "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.9.0.tgz",
+      "integrity": "sha512-TZNye00tI67lwYvzxCxHGjwTNlUV70io54/Ed4j6PscB8xVfuBJpRenI/o6dVk0cY0PYTY27AgCoGGxRnYuItQ==",
+      "dev": true,
+      "requires": {
+        "path-parse": "^1.0.6"
+      }
+    },
+    "seed-random": {
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/seed-random/-/seed-random-2.2.0.tgz",
+      "integrity": "sha1-KpsZ4lCoFwmSMaW5mk2vgLf77VQ=",
+      "dev": true
+    },
+    "semver": {
+      "version": "5.6.0",
+      "resolved": "https://registry.npmjs.org/semver/-/semver-5.6.0.tgz",
+      "integrity": "sha512-RS9R6R35NYgQn++fkDWaOmqGoj4Ek9gGs+DPxNUZKuwE183xjJroKvyo1IzVFeXvUrvmALy6FWD5xrdJT25gMg==",
+      "dev": true
+    },
+    "serialize-error": {
+      "version": "2.1.0",
+      "resolved": "http://registry.npmjs.org/serialize-error/-/serialize-error-2.1.0.tgz",
+      "integrity": "sha1-ULZ51WNc34Rme9yOWa9OW4HV9go=",
+      "dev": true
+    },
+    "shebang-command": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/shebang-command/-/shebang-command-1.2.0.tgz",
+      "integrity": "sha1-RKrGW2lbAzmJaMOfNj/uXer98eo=",
+      "dev": true,
+      "requires": {
+        "shebang-regex": "^1.0.0"
+      }
+    },
+    "shebang-regex": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/shebang-regex/-/shebang-regex-1.0.0.tgz",
+      "integrity": "sha1-2kL0l0DAtC2yypcoVxyxkMmO/qM=",
+      "dev": true
+    },
+    "slash": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/slash/-/slash-1.0.0.tgz",
+      "integrity": "sha1-xB8vbDn8FtHNF61LXYlhFK5HDVU=",
+      "dev": true
+    },
+    "source-map": {
+      "version": "0.5.6",
+      "resolved": "http://registry.npmjs.org/source-map/-/source-map-0.5.6.tgz",
+      "integrity": "sha1-dc449SvwczxafwwRjYEzSiu19BI=",
+      "dev": true
+    },
+    "stack-chain": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/stack-chain/-/stack-chain-2.0.0.tgz",
+      "integrity": "sha512-GGrHXePi305aW7XQweYZZwiRwR7Js3MWoK/EHzzB9ROdc75nCnjSJVi21rdAGxFl+yCx2L2qdfl5y7NO4lTyqg==",
+      "dev": true
+    },
+    "stack-generator": {
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/stack-generator/-/stack-generator-2.0.3.tgz",
+      "integrity": "sha512-kdzGoqrnqsMxOEuXsXyQTmvWXZmG0f3Ql2GDx5NtmZs59sT2Bt9Vdyq0XdtxUi58q/+nxtbF9KOQ9HkV1QznGg==",
+      "dev": true,
+      "requires": {
+        "stackframe": "^1.0.4"
+      }
+    },
+    "stack-utils": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/stack-utils/-/stack-utils-1.0.2.tgz",
+      "integrity": "sha512-MTX+MeG5U994cazkjd/9KNAapsHnibjMLnfXodlkXw76JEea0UiNzrqidzo1emMwk7w5Qhc9jd4Bn9TBb1MFwA==",
+      "dev": true
+    },
+    "stackframe": {
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/stackframe/-/stackframe-1.0.4.tgz",
+      "integrity": "sha512-to7oADIniaYwS3MhtCa/sQhrxidCCQiF/qp4/m5iN3ipf0Y7Xlri0f6eG29r08aL7JYl8n32AF3Q5GYBZ7K8vw==",
+      "dev": true
+    },
+    "stacktrace-gps": {
+      "version": "3.0.2",
+      "resolved": "https://registry.npmjs.org/stacktrace-gps/-/stacktrace-gps-3.0.2.tgz",
+      "integrity": "sha512-9o+nWhiz5wFnrB3hBHs2PTyYrS60M1vvpSzHxwxnIbtY2q9Nt51hZvhrG1+2AxD374ecwyS+IUwfkHRE/2zuGg==",
+      "dev": true,
+      "requires": {
+        "source-map": "0.5.6",
+        "stackframe": "^1.0.4"
+      }
+    },
+    "stacktrace-js": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/stacktrace-js/-/stacktrace-js-2.0.0.tgz",
+      "integrity": "sha1-d2ymRqlbxsayuQd2U2p/xyxt21g=",
+      "dev": true,
+      "requires": {
+        "error-stack-parser": "^2.0.1",
+        "stack-generator": "^2.0.1",
+        "stacktrace-gps": "^3.0.1"
+      }
+    },
+    "string-argv": {
+      "version": "0.1.1",
+      "resolved": "https://registry.npmjs.org/string-argv/-/string-argv-0.1.1.tgz",
+      "integrity": "sha512-El1Va5ehZ0XTj3Ekw4WFidXvTmt9SrC0+eigdojgtJMVtPkF0qbBe9fyNSl9eQf+kUHnTSQxdQYzuHfZy8V+DQ==",
+      "dev": true
+    },
+    "string-width": {
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/string-width/-/string-width-2.1.1.tgz",
+      "integrity": "sha512-nOqH59deCq9SRHlxq1Aw85Jnt4w6KvLKqWVik6oA9ZklXLNIOlqg4F2yrT1MVaTjAqvVwdfeZ7w7aCvJD7ugkw==",
+      "dev": true,
+      "requires": {
+        "is-fullwidth-code-point": "^2.0.0",
+        "strip-ansi": "^4.0.0"
+      }
+    },
+    "strip-ansi": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-4.0.0.tgz",
+      "integrity": "sha1-qEeQIusaw2iocTibY1JixQXuNo8=",
+      "dev": true,
+      "requires": {
+        "ansi-regex": "^3.0.0"
+      }
+    },
+    "supports-color": {
+      "version": "5.5.0",
+      "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-5.5.0.tgz",
+      "integrity": "sha512-QjVjwdXIt408MIiAqCX4oUKsgU2EqAGzs2Ppkm4aQYbjm+ZEWEcW4SfFNTr4uMNZma0ey4f5lgLrkB0aX0QMow==",
+      "dev": true,
+      "requires": {
+        "has-flag": "^3.0.0"
+      }
+    },
+    "thenify": {
+      "version": "3.3.0",
+      "resolved": "https://registry.npmjs.org/thenify/-/thenify-3.3.0.tgz",
+      "integrity": "sha1-5p44obq+lpsBCCB5eLn2K4hgSDk=",
+      "dev": true,
+      "requires": {
+        "any-promise": "^1.0.0"
+      }
+    },
+    "thenify-all": {
+      "version": "1.6.0",
+      "resolved": "https://registry.npmjs.org/thenify-all/-/thenify-all-1.6.0.tgz",
+      "integrity": "sha1-GhkY1ALY/D+Y+/I02wvMjMEOlyY=",
+      "dev": true,
+      "requires": {
+        "thenify": ">= 3.1.0 < 4"
+      }
+    },
+    "title-case": {
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/title-case/-/title-case-2.1.1.tgz",
+      "integrity": "sha1-PhJyFtpY0rxb7PE3q5Ha46fNj6o=",
+      "dev": true,
+      "requires": {
+        "no-case": "^2.2.0",
+        "upper-case": "^1.0.3"
+      }
+    },
+    "type-detect": {
+      "version": "4.0.8",
+      "resolved": "https://registry.npmjs.org/type-detect/-/type-detect-4.0.8.tgz",
+      "integrity": "sha512-0fr/mIH1dlO+x7TlcMy+bIDqKPsw/70tVyeHW787goQjhmqaZe10uwLujubK9q9Lg6Fiho1KUKDYz0Z7k7g5/g==",
+      "dev": true
+    },
+    "upper-case": {
+      "version": "1.1.3",
+      "resolved": "https://registry.npmjs.org/upper-case/-/upper-case-1.1.3.tgz",
+      "integrity": "sha1-9rRQHC7EzdJrp4vnIilh3ndiFZg=",
+      "dev": true
+    },
+    "util-arity": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/util-arity/-/util-arity-1.1.0.tgz",
+      "integrity": "sha1-WdAa8f2z/t4KxOYysKtfbOl8kzA=",
+      "dev": true
+    },
+    "verror": {
+      "version": "1.10.0",
+      "resolved": "https://registry.npmjs.org/verror/-/verror-1.10.0.tgz",
+      "integrity": "sha1-OhBcoXBTr1XW4nDB+CiGguGNpAA=",
+      "dev": true,
+      "requires": {
+        "assert-plus": "^1.0.0",
+        "core-util-is": "1.0.2",
+        "extsprintf": "^1.2.0"
+      }
+    },
+    "which": {
+      "version": "1.3.1",
+      "resolved": "https://registry.npmjs.org/which/-/which-1.3.1.tgz",
+      "integrity": "sha512-HxJdYWq1MTIQbJ3nw0cqssHoTNU267KlrDuGZ1WYlxDStUtKUhOaJmh112/TZmHxxUfuJqPXSOm7tDyas0OSIQ==",
+      "dev": true,
+      "requires": {
+        "isexe": "^2.0.0"
+      }
+    },
+    "wrappy": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
+      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
+      "dev": true
+    }
+  }
+}
diff --git a/assertion/package.json b/assertion/package.json
new file mode 100644
index 0000000..4f1164c
--- /dev/null
+++ b/assertion/package.json
@@ -0,0 +1,16 @@
+{
+  "name": "assertion",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "cucumber-js"
+  },
+  "author": "Eugen Wissner <belka@caraus.de>",
+  "license": "MPL-2.0",
+  "devDependencies": {
+    "chai": "^4.2.0",
+    "cucumber": "^5.0.3",
+    "expect": "^23.6.0"
+  }
+}