First commit.

.eslintrc

@@ -0,0 +1,87 @@
+{
+  "extends": "eslint:recommended",
+  "env": {
+    "browser": true
+  },
+  "globals": {
+    "Drupal": true,
+    "jQuery": true
+  },
+  "rules": {
+    // Errors.
+    "array-bracket-spacing": [2, "never"],
+    "block-scoped-var": 2,
+    "brace-style": [2, "stroustrup", {"allowSingleLine": true}],
+    "comma-dangle": [2, "never"],
+    "comma-spacing": 2,
+    "comma-style": [2, "last"],
+    "computed-property-spacing": [2, "never"],
+    "curly": [2, "all"],
+    "eol-last": 2,
+    "eqeqeq": [2, "smart"],
+    "guard-for-in": 2,
+    "indent": [2, 2, {"SwitchCase": 1}],
+    "key-spacing": [2, {"beforeColon": false, "afterColon": true}],
+    "keyword-spacing": [2, {"before": true, "after": true}],
+    "linebreak-style": [2, "unix"],
+    "lines-around-comment": [2, {"beforeBlockComment": true, "afterBlockComment": false}],
+    "new-parens": 2,
+    "no-array-constructor": 2,
+    "no-caller": 2,
+    "no-catch-shadow": 2,
+    "no-eval": 2,
+    "no-extend-native": 2,
+    "no-extra-bind": 2,
+    "no-extra-parens": [2, "functions"],
+    "no-implied-eval": 2,
+    "no-iterator": 2,
+    "no-label-var": 2,
+    "no-labels": 2,
+    "no-lone-blocks": 2,
+    "no-loop-func": 2,
+    "no-multi-spaces": 2,
+    "no-multi-str": 2,
+    "no-native-reassign": 2,
+    "no-nested-ternary": 2,
+    "no-new-func": 2,
+    "no-new-object": 2,
+    "no-new-wrappers": 2,
+    "no-octal-escape": 2,
+    "no-process-exit": 2,
+    "no-proto": 2,
+    "no-return-assign": 2,
+    "no-script-url": 2,
+    "no-sequences": 2,
+    "no-shadow-restricted-names": 2,
+    "no-spaced-func": 2,
+    "no-trailing-spaces": 2,
+    "no-undef-init": 2,
+    "no-undefined": 2,
+    "no-unused-expressions": 2,
+    "no-unused-vars": [2, {"vars": "all", "args": "none"}],
+    "no-with": 2,
+    "object-curly-spacing": [2, "never"],
+    "one-var": [2, "never"],
+    "quote-props": [2, "consistent-as-needed"],
+    "quotes": [2, "single", "avoid-escape"],
+    "semi": [2, "always"],
+    "semi-spacing": [2, {"before": false, "after": true}],
+    "space-before-blocks": [2, "always"],
+    "space-before-function-paren": [2, {"anonymous": "always", "named": "never"}],
+    "space-in-parens": [2, "never"],
+    "space-infix-ops": 2,
+    "space-unary-ops": [2, { "words": true, "nonwords": false }],
+    "spaced-comment": [2, "always"],
+    "strict": 2,
+    "yoda": [2, "never"],
+    // Warnings.
+    "max-nested-callbacks": [1, 3],
+    "valid-jsdoc": [1, {
+      "prefer": {
+        "returns": "return",
+        "property": "prop"
+      },
+      "requireReturn": false
+    }]
+  }
+}

.gitignore

@@ -0,0 +1 @@
+node_modules/

.sass-lint.yml

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+# Documentation for the sass-lint Linters is available at:
+# https://github.com/sasstools/sass-lint/tree/master/docs/rules
+
+options:
+  formatter: stylish
+  merge-default-rules: true
+rules:
+  # Extends
+  extends-before-mixins: 2
+  extends-before-declarations: 2
+  placeholder-in-extend: 2
+
+  # Mixins
+  mixins-before-declarations:
+    - 2
+    - exclude:
+      - 'breakpoint'
+      - 'mq'
+      - 'respond-to'
+      - 'rtl'
+      - 'zen-breakpoint'
+      - 'zen-layout'
+      - 'zen-mq'
+      - 'zen-respond-to'
+
+  # Line Spacing
+  one-declaration-per-line: 2
+  empty-line-between-blocks:
+    - 2
+    - ignore-single-line-rulesets: false
+  single-line-per-selector: 2
+
+  # Disallows
+  # no-color-keywords: 2
+  # no-color-literals: 2
+  # no-css-comments: 2
+  no-debug: 2
+  # no-duplicate-properties: 2
+  no-empty-rulesets: 2
+  no-extends: 0
+  # no-ids: 2
+  # no-important: 2
+  no-invalid-hex: 2
+  no-mergeable-selectors: 2
+  no-misspelled-properties:
+    - 2
+    - extra-properties:
+      - '*font-family'
+      - '*height'
+      - 'interpolation-mode'
+      - '*margin-left'
+      - '*vertical-align'
+      - '*width'
+  no-qualifying-elements: 0
+  no-trailing-zero: 2
+  no-transition-all: 2
+  no-url-protocols: 2
+  # no-vendor-prefixes: 2
+  no-warn: 2
+  property-units: 0
+
+  # Nesting
+  force-attribute-nesting: 0
+  force-element-nesting: 0
+  force-pseudo-nesting: 0
+
+  # Name Formats
+  class-name-format:
+    - 2
+    - convention: hyphenatedbem
+  function-name-format: 2
+  id-name-format: 2
+  mixin-name-format:
+    - 2
+    - convention: hyphenatedbem
+  placeholder-name-format:
+    - 2
+    - convention: hyphenatedbem
+  variable-name-format: 2
+
+  # Style Guide
+  bem-depth: 0
+  border-zero: 2
+  brace-style:
+    - 2
+    - style: stroustrup
+    - allow-single-line: false
+  clean-import-paths: 2
+  empty-args: 0
+  hex-length: 2
+  hex-notation: 2
+  # indentation: 2
+  leading-zero: 2
+  nesting-depth:
+    - 2
+    - max-depth: 4
+  property-sort-order: 0
+  quotes: 2
+  shorthand-values: 2
+  url-quotes: 2
+  variable-for-property: 2
+  zero-unit: 2
+
+  # Inner Spacing
+  space-after-comma: 2
+  space-before-colon: 2
+  space-after-colon: 2
+  space-before-brace: 2
+  space-before-bang: 2
+  space-after-bang: 2
+  space-between-parens: 0
+  space-around-operator: 0
+
+  # Final Items
+  trailing-semicolon: 2
+  final-newline: 2
+
+  # Work-around for sass-lint not having per-file/block/line rule config.
+  # @TODO: Re-enable these disabled rules. See https://www.drupal.org/node/2717117
+  indentation: 0
+  no-color-keywords: 0
+  no-color-literals: 0
+  no-css-comments: 0
+  no-duplicate-properties: 0
+  no-ids: 0
+  no-important: 0
+  no-vendor-prefixes: 0