chore: added new linter config (#1028)

* chore: added new linter config

* chore: linting fixes

* chore: refactore in linting config and minor linting fixes

.eslintignore

@@ -4,4 +4,8 @@ node_modules
 build
 server.js
 cypress
-lib
+lib
+themes
+build
+docs/
+**/*.md

.eslintrc.js

@@ -0,0 +1,63 @@
+module.exports = {
+  root: true,
+  parser: 'babel-eslint',
+  parserOptions: {
+    sourceType: 'module',
+    ecmaVersion: 2019,
+  },
+  env: {
+    jest: true,
+    browser: true,
+    node: true,
+    es6: true,
+  },
+  plugins: ['prettier', 'import'],
+  extends: ['eslint:recommended', 'plugin:import/recommended'],
+  settings: {
+    'import/ignore': ['node_modules', '.json$'],
+  },
+  rules: {
+    'prettier/prettier': ['error'],
+    camelcase: ['warn'],
+    curly: ['error', 'all'],
+    'dot-notation': ['error'],
+    eqeqeq: ['error'],
+    'handle-callback-err': ['error'],
+    'new-cap': ['error'],
+    'no-alert': ['error'],
+    'no-caller': ['error'],
+    'no-eval': ['error'],
+    'no-labels': ['error'],
+    'no-lonely-if': ['error'],
+    'no-new': ['error'],
+    'no-proto': ['error'],
+    'no-return-assign': ['error'],
+    'no-self-compare': ['error'],
+    'no-shadow': ['warn'],
+    'no-shadow-restricted-names': ['error'],
+    'no-useless-call': ['error'],
+    'no-var': ['error'],
+    'no-void': ['error'],
+    'no-with': ['error'],
+    radix: ['error'],
+    'spaced-comment': ['error', 'always'],
+    strict: ['error', 'global'],
+    yoda: ['error', 'never'],
+
+    // Import rules
+    // Search way how integrate with `lerna`
+    'import/no-unresolved': 'off',
+    'import/imports-first': ['error'],
+    'import/newline-after-import': ['error'],
+    'import/no-duplicates': ['error'],
+    'import/no-mutable-exports': ['error'],
+    'import/no-named-as-default': ['error'],
+    'import/no-named-as-default-member': ['error'],
+    'import/order': ['warn'],
+  },
+  globals: {
+    Docsify: 'writable',
+    $docsify: 'writable',
+    dom: 'writable',
+  },
+};

.prettierrc.js

@@ -0,0 +1,4 @@
+module.exports = {
+  singleQuote: true,
+  trailingComma: 'es5',
+};