Adding eslint

.eslintrc.json

@@ -0,0 +1,46 @@
+{
+  "env": {
+    "browser": true,
+    "es6": true,
+    "node": true
+  },
+  "extends": [
+    "eslint:recommended",
+    "plugin:react/recommended",
+    "plugin:import/recommended"
+  ],
+  "parserOptions": {
+    "ecmaFeatures": {
+      "jsx": true
+    },
+    "ecmaVersion": 2018,
+    "sourceType": "module"
+  },
+  "plugins": [
+    "react",
+    "import"
+  ],
+  "rules": {
+    "indent": [
+      "error",
+      2
+    ],
+    "linebreak-style": [
+      "error",
+      "unix"
+    ],
+    "quotes": [
+      "error",
+      "single"
+    ],
+    "semi": [
+      "error",
+      "always"
+    ]
+  },
+  "settings": {
+    "react": {
+      "version": "16.7"
+    }
+  }
+}

.gitlab-ci.yml

@@ -1,6 +1,7 @@
 image: node:8
 
 stages:
+  - test
   - build
 
 cache:
@@ -10,6 +11,11 @@ cache:
 before_script:
   - yarn install
 
+lint:
+  stage: test
+  script:
+    - yarn test:lint
+
 pages:
   stage: build
   variables:

package.json

@@ -11,9 +11,13 @@
   "private": true,
   "scripts": {
     "start": "gatsby develop",
-    "build": "gatsby build"
+    "build": "gatsby build",
+    "test:lint": "eslint --ignore-path .gitignore ."
   },
   "dependencies": {
+    "eslint": "^5.11.1",
+    "eslint-plugin-import": "^2.14.0",
+    "eslint-plugin-react": "^7.12.1",
     "gatsby": "^2.0.81",
     "prop-types": "^15.6.2",
     "react": "^16.7.0",

yarn.lock

@@ -1071,6 +1071,11 @@ acorn-jsx@^3.0.0:
   dependencies:
     acorn "^3.0.4"
 
+acorn-jsx@^5.0.0:
+  version "5.0.1"
+  resolved "https://registry.yarnpkg.com/acorn-jsx/-/acorn-jsx-5.0.1.tgz#32a064fd925429216a09b141102bfdd185fae40e"
+  integrity sha512-HJ7CfNHrfJLlNTzIEUTj43LNWGkqpRLxm3YjAlcD0ACydk9XynzYsCBHxut+iqt+1aBXkx9UP/w/ZqMr13XIzg==
+
 acorn@^3.0.4:
   version "3.3.0"
   resolved "https://registry.yarnpkg.com/acorn/-/acorn-3.3.0.tgz#45e37fb39e8da3f25baee3ff5369e2bb5f22017a"
@@ -1081,6 +1086,11 @@ acorn@^5.0.0, acorn@^5.5.0, acorn@^5.6.2:
   resolved "https://registry.yarnpkg.com/acorn/-/acorn-5.7.3.tgz#67aa231bf8812974b85235a96771eb6bd07ea279"
   integrity sha512-T/zvzYRfbVojPWahDsE5evJdHb3oJoQfFbsrKM7w5Zcs++Tr257tia3BmMP8XYVjp1S9RZXQMh7gao96BlqZOw==
 
+acorn@^6.0.2:
+  version "6.0.5"
+  resolved "https://registry.yarnpkg.com/acorn/-/acorn-6.0.5.tgz#81730c0815f3f3b34d8efa95cb7430965f4d887a"
+  integrity sha512-i33Zgp3XWtmZBMNvCr4azvOFeWVw1Rk6p3hfi3LUDvIFraOMywb1kAtrbi+med14m4Xfpqm3zRZMT+c0FNE7kg==
+
 address@1.0.3, address@^1.0.1:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/address/-/address-1.0.3.tgz#b5f50631f8d6cec8bd20c963963afb55e06cbce9"
@@ -1116,7 +1126,7 @@ ajv@^5.2.3, ajv@^5.3.0:
     fast-json-stable-stringify "^2.0.0"
     json-schema-traverse "^0.3.0"
 
-ajv@^6.1.0, ajv@^6.5.5:
+ajv@^6.1.0, ajv@^6.5.3, ajv@^6.5.5, ajv@^6.6.1:
   version "6.6.2"
   resolved "https://registry.yarnpkg.com/ajv/-/ajv-6.6.2.tgz#caceccf474bf3fc3ce3b147443711a24063cc30d"
   integrity sha512-FBHEW6Jf5TB9MGBgUUA9XHkTbjXYfAUjY43ACMfmdMRHniyoMHjHjzD50OK8LGDWQwp4rWEsIq5kEqq7rvIM1g==
@@ -1173,7 +1183,7 @@ ansi-styles@^2.2.1:
   resolved "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-2.2.1.tgz#b432dd3358b634cf75e1e4664368240533c1ddbe"
   integrity sha1-tDLdM1i2NM914eRmQ2gkBTPB3b4=
 
-ansi-styles@^3.2.1:
+ansi-styles@^3.2.0, ansi-styles@^3.2.1:
   version "3.2.1"
   resolved "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-3.2.1.tgz#41fbb20243e50b12be0f04b8dedbf07520ce841d"
   integrity sha512-VT0ZI6kZRdTh8YyJw3SMbYm/u+NqfsAxEpWO0Pf9sq8/e94WxxOpPKx9FR1FlyCtOVDNOQ+8ntlqFxiRc+r5qA==
@@ -1369,6 +1379,11 @@ ast-types-flow@0.0.7, ast-types-flow@^0.0.7:
   resolved "https://registry.yarnpkg.com/ast-types-flow/-/ast-types-flow-0.0.7.tgz#f70b735c6bca1a5c9c22d982c3e39e7feba3bdad"
   integrity sha1-9wtzXGvKGlycItmCw+Oef+ujva0=
 
+astral-regex@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/astral-regex/-/astral-regex-1.0.0.tgz#6c8c3fb827dd43ee3918f27b82782ab7658a6fd9"
+  integrity sha512-+Ryf6g3BKoRc7jfp7ad8tM4TtMiaWvbF/1/sQcZPkkS7ag3D5nMBCe2UfOTONtAkaG0tO0ij3C5Lwmf1EiyjHg==
+
 async-each@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/async-each/-/async-each-1.0.1.tgz#19d386a1d9edc6e7c1c85d388aedbcc56d33602d"
@@ -2896,7 +2911,7 @@ cross-spawn@5.1.0, cross-spawn@^5.0.1, cross-spawn@^5.1.0:
     shebang-command "^1.2.0"
     which "^1.2.9"
 
-cross-spawn@^6.0.0:
+cross-spawn@^6.0.0, cross-spawn@^6.0.5:
   version "6.0.5"
   resolved "https://registry.yarnpkg.com/cross-spawn/-/cross-spawn-6.0.5.tgz#4a5ec7c64dfae22c3a14124dbacdee846d80cbc4"
   integrity sha512-eTVLrBSt7fjbDygz805pMnstIs2VTBNkRm0qxZd+M7A5XDdxVRWO5MxGBXZhjY4cqLYLdtrGqRf8mBPmzwSpWQ==
@@ -3170,7 +3185,7 @@ debug@^3.1.0, debug@^3.2.5:
   dependencies:
     ms "^2.1.1"
 
-debug@^4.1.0, debug@~4.1.0:
+debug@^4.0.1, debug@^4.1.0, debug@~4.1.0:
   version "4.1.1"
   resolved "https://registry.yarnpkg.com/debug/-/debug-4.1.1.tgz#3b72260255109c6b589cee050f1d516139664791"
   integrity sha512-pYAIzeRo8J6KPEaJ0VWOh5Pzkbw/RetuzehGM7QRRX5he4fPHx2rdKMB256ehJCkX+XRQm16eZLqLNS8RSZXZw==
@@ -3733,7 +3748,7 @@ eslint-plugin-graphql@^2.0.0:
     graphql-config "^2.0.1"
     lodash "^4.11.1"
 
-eslint-plugin-import@^2.9.0:
+eslint-plugin-import@^2.14.0, eslint-plugin-import@^2.9.0:
   version "2.14.0"
   resolved "https://registry.yarnpkg.com/eslint-plugin-import/-/eslint-plugin-import-2.14.0.tgz#6b17626d2e3e6ad52cfce8807a845d15e22111a8"
   integrity sha512-FpuRtniD/AY6sXByma2Wr0TXvXJ4nA/2/04VPlfpmUDPOpOY264x+ILiwnrk/k4RINgDAyFZByxqPUbSQ5YE7g==
@@ -3763,7 +3778,7 @@ eslint-plugin-jsx-a11y@^6.0.3:
     has "^1.0.3"
     jsx-ast-utils "^2.0.1"
 
-eslint-plugin-react@^7.8.2:
+eslint-plugin-react@^7.12.1, eslint-plugin-react@^7.8.2:
   version "7.12.1"
   resolved "https://registry.yarnpkg.com/eslint-plugin-react/-/eslint-plugin-react-7.12.1.tgz#b9c4639f72469ff317ac31e3bd630d22d0dbf8f4"
   integrity sha512-1YyXVhp6KSB+xRC1BWzmlA4BH9Wp9jMMBE6AJizxuk+bg/KUJpQGRwsU1/q1pV8rM6oEdLCxunXn7Nfh2BOWBg==
@@ -3800,6 +3815,11 @@ eslint-scope@^4.0.0:
     esrecurse "^4.1.0"
     estraverse "^4.1.1"
 
+eslint-utils@^1.3.1:
+  version "1.3.1"
+  resolved "https://registry.yarnpkg.com/eslint-utils/-/eslint-utils-1.3.1.tgz#9a851ba89ee7c460346f97cf8939c7298827e512"
+  integrity sha512-Z7YjnIldX+2XMcjr7ZkgEsOj/bREONV60qYeB/bjMAqqqZ4zxKyWX+BOUkdmRmA9riiIPVvo5x86m5elviOk0Q==
+
 eslint-visitor-keys@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/eslint-visitor-keys/-/eslint-visitor-keys-1.0.0.tgz#3f3180fb2e291017716acb4c9d6d5b5c34a6a81d"
@@ -3849,6 +3869,49 @@ eslint@^4.19.1:
     table "4.0.2"
     text-table "~0.2.0"
 
+eslint@^5.11.1:
+  version "5.11.1"
+  resolved "https://registry.yarnpkg.com/eslint/-/eslint-5.11.1.tgz#8deda83db9f354bf9d3f53f9677af7e0e13eadda"
+  integrity sha512-gOKhM8JwlFOc2acbOrkYR05NW8M6DCMSvfcJiBB5NDxRE1gv8kbvxKaC9u69e6ZGEMWXcswA/7eKR229cEIpvg==
+  dependencies:
+    "@babel/code-frame" "^7.0.0"
+    ajv "^6.5.3"
+    chalk "^2.1.0"
+    cross-spawn "^6.0.5"
+    debug "^4.0.1"
+    doctrine "^2.1.0"
+    eslint-scope "^4.0.0"
+    eslint-utils "^1.3.1"
+    eslint-visitor-keys "^1.0.0"
+    espree "^5.0.0"
+    esquery "^1.0.1"
+    esutils "^2.0.2"
+    file-entry-cache "^2.0.0"
+    functional-red-black-tree "^1.0.1"
+    glob "^7.1.2"
+    globals "^11.7.0"
+    ignore "^4.0.6"
+    imurmurhash "^0.1.4"
+    inquirer "^6.1.0"
+    js-yaml "^3.12.0"
+    json-stable-stringify-without-jsonify "^1.0.1"
+    levn "^0.3.0"
+    lodash "^4.17.5"
+    minimatch "^3.0.4"
+    mkdirp "^0.5.1"
+    natural-compare "^1.4.0"
+    optionator "^0.8.2"
+    path-is-inside "^1.0.2"
+    pluralize "^7.0.0"
+    progress "^2.0.0"
+    regexpp "^2.0.1"
+    require-uncached "^1.0.3"
+    semver "^5.5.1"
+    strip-ansi "^4.0.0"
+    strip-json-comments "^2.0.1"
+    table "^5.0.2"
+    text-table "^0.2.0"
+
 espree@^3.5.4:
   version "3.5.4"
   resolved "https://registry.yarnpkg.com/espree/-/espree-3.5.4.tgz#b0f447187c8a8bed944b815a660bddf5deb5d1a7"
@@ -3857,12 +3920,21 @@ espree@^3.5.4:
     acorn "^5.5.0"
     acorn-jsx "^3.0.0"
 
+espree@^5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/espree/-/espree-5.0.0.tgz#fc7f984b62b36a0f543b13fb9cd7b9f4a7f5b65c"
+  integrity sha512-1MpUfwsdS9MMoN7ZXqAr9e9UKdVHDcvrJpyx7mm1WuQlx/ygErEQBzgi5Nh5qBHIoYweprhtMkTCb9GhcAIcsA==
+  dependencies:
+    acorn "^6.0.2"
+    acorn-jsx "^5.0.0"
+    eslint-visitor-keys "^1.0.0"
+
 esprima@^4.0.0:
   version "4.0.1"
   resolved "https://registry.yarnpkg.com/esprima/-/esprima-4.0.1.tgz#13b04cdb3e6c5d19df91ab6987a8695619b0aa71"
   integrity sha512-eGuFFw7Upda+g4p+QHvnW0RyTX/SVeJBDM/gCtMARO0cLuT2HcEKnTPvhjV6aGeqrCB/sbNop0Kszm0jsaWU4A==
 
-esquery@^1.0.0:
+esquery@^1.0.0, esquery@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/esquery/-/esquery-1.0.1.tgz#406c51658b1f5991a5f9b62b1dc25b00e3e5c708"
   integrity sha512-SmiyZ5zIWH9VM+SRUReLS5Q8a7GxtRdxEBVZpm98rJM7Sb+A9DVCndXfkeFUd3byderg+EbDkfnevfCwynWaNA==
@@ -4776,7 +4848,7 @@ global@^4.3.0:
     min-document "^2.19.0"
     process "~0.5.1"
 
-globals@^11.0.1, globals@^11.1.0:
+globals@^11.0.1, globals@^11.1.0, globals@^11.7.0:
   version "11.9.0"
   resolved "https://registry.yarnpkg.com/globals/-/globals-11.9.0.tgz#bde236808e987f290768a93d065060d78e6ab249"
   integrity sha512-5cJVtyXWH8PiJPVLZzzoIizXx944O4OmRro5MWKx5fT4MgcN7OfaMutPeaTdJCCURwbWdhhcCWcKIffPnmTzBg==
@@ -5191,6 +5263,11 @@ ignore@^3.3.3:
   resolved "https://registry.yarnpkg.com/ignore/-/ignore-3.3.10.tgz#0a97fb876986e8081c631160f8f9f389157f0043"
   integrity sha512-Pgs951kaMm5GXP7MOvxERINe3gsaVjUWFm+UZPSq9xYriQAksyhg0csnS0KXSNRD5NmNdapXEpjxG49+AKh/ug==
 
+ignore@^4.0.6:
+  version "4.0.6"
+  resolved "https://registry.yarnpkg.com/ignore/-/ignore-4.0.6.tgz#750e3db5862087b4737ebac8207ffd1ef27b25fc"
+  integrity sha512-cyFDKrqc/YdcWFniJhzI42+AzS+gNwmUzOSFcRCQYwySuBBBy/KjuxWLZ/FHEH6Moq1NizMOBWyTcv8O4OZIMg==
+
 immutable@~3.7.6:
   version "3.7.6"
   resolved "https://registry.yarnpkg.com/immutable/-/immutable-3.7.6.tgz#13b4d3cb12befa15482a26fe1b2ebae640071e4b"
@@ -5289,7 +5366,7 @@ inquirer@3.3.0, inquirer@^3.0.6:
     strip-ansi "^4.0.0"
     through "^2.3.6"
 
-inquirer@^6.2.0:
+inquirer@^6.1.0, inquirer@^6.2.0:
   version "6.2.1"
   resolved "https://registry.yarnpkg.com/inquirer/-/inquirer-6.2.1.tgz#9943fc4882161bdb0b0c9276769c75b32dbfcd52"
   integrity sha512-088kl3DRT2dLU5riVMKKr1DlImd6X7smDhpXUCkJDCKvTEJeRiXh0G132HG9u5a+6Ylw9plFRY7RuTnwohYSpg==
@@ -8029,6 +8106,11 @@ regexpp@^1.0.1:
   resolved "https://registry.yarnpkg.com/regexpp/-/regexpp-1.1.0.tgz#0e3516dd0b7904f413d2d4193dce4618c3a689ab"
   integrity sha512-LOPw8FpgdQF9etWMaAfG/WRthIdXJGYp4mJ2Jgn/2lpkbod9jPn0t9UqN7AxBOKNfzRbYyVfgc7Vk4t/MpnXgw==
 
+regexpp@^2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/regexpp/-/regexpp-2.0.1.tgz#8d19d31cf632482b589049f8281f93dbcba4d07f"
+  integrity sha512-lv0M6+TkDVniA3aD1Eg0DVpfU/booSu7Eev3TDO/mZKHBfVjgCGTV4t4buppESEYDtkArYFOxTJWv6S5C+iaNw==
+
 regexpu-core@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/regexpu-core/-/regexpu-core-1.0.0.tgz#86a763f58ee4d7c2f6b102e4764050de7ed90c6b"
@@ -8554,6 +8636,15 @@ slice-ansi@1.0.0:
   dependencies:
     is-fullwidth-code-point "^2.0.0"
 
+slice-ansi@2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/slice-ansi/-/slice-ansi-2.0.0.tgz#5373bdb8559b45676e8541c66916cdd6251612e7"
+  integrity sha512-4j2WTWjp3GsZ+AOagyzVbzp4vWGtZ0hEZ/gDY/uTvm6MTxUfTUIsnMIFb1bn8o0RuXiqUw15H1bue8f22Vw2oQ==
+  dependencies:
+    ansi-styles "^3.2.0"
+    astral-regex "^1.0.0"
+    is-fullwidth-code-point "^2.0.0"
+
 snapdragon-node@^2.0.1:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/snapdragon-node/-/snapdragon-node-2.1.1.tgz#6c175f86ff14bdb0724563e8f3c1b021a286853b"
@@ -8932,7 +9023,7 @@ strip-eof@^1.0.0:
   resolved "https://registry.yarnpkg.com/strip-eof/-/strip-eof-1.0.0.tgz#bb43ff5598a6eb05d89b59fcd129c983313606bf"
   integrity sha1-u0P/VZim6wXYm1n80SnJgzE2Br8=
 
-strip-json-comments@~2.0.1:
+strip-json-comments@^2.0.1, strip-json-comments@~2.0.1:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/strip-json-comments/-/strip-json-comments-2.0.1.tgz#3c531942e908c2697c0ec344858c286c7ca0a60a"
   integrity sha1-PFMZQukIwml8DsNEhYwobHygpgo=
@@ -9003,6 +9094,16 @@ table@4.0.2:
     slice-ansi "1.0.0"
     string-width "^2.1.1"
 
+table@^5.0.2:
+  version "5.1.1"
+  resolved "https://registry.yarnpkg.com/table/-/table-5.1.1.tgz#92030192f1b7b51b6eeab23ed416862e47b70837"
+  integrity sha512-NUjapYb/qd4PeFW03HnAuOJ7OMcBkJlqeClWxeNlQ0lXGSb52oZXGzkO0/I0ARegQ2eUT1g2VDJH0eUxDRcHmw==
+  dependencies:
+    ajv "^6.6.1"
+    lodash "^4.17.11"
+    slice-ansi "2.0.0"
+    string-width "^2.1.1"
+
 tapable@^1.0.0, tapable@^1.1.0:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/tapable/-/tapable-1.1.1.tgz#4d297923c5a72a42360de2ab52dadfaaec00018e"
@@ -9051,7 +9152,7 @@ terser@^3.8.1:
     source-map "~0.6.1"
     source-map-support "~0.5.6"
 
-text-table@0.2.0, text-table@~0.2.0:
+text-table@0.2.0, text-table@^0.2.0, text-table@~0.2.0:
   version "0.2.0"
   resolved "https://registry.yarnpkg.com/text-table/-/text-table-0.2.0.tgz#7f5ee823ae805207c00af2df4a84ec3fcfa570b4"
   integrity sha1-f17oI66AUgfACvLfSoTsP8+lcLQ=