Adding basic ESLint config

.eslintignore

@@ -0,0 +1 @@
+public/bundle.js

.eslintrc.yml

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+env:
+  browser: true
+  es6: true
+  jquery: true
+  node: true
+
+extends:
+  - eslint:recommended
+
+plugins:
+  - security
+
+root: true
+
+rules:
+  security/detect-buffer-noassert: warn
+  security/detect-child-process: warn
+  security/detect-disable-mustache-escape: warn
+  security/detect-eval-with-expression: warn
+  security/detect-new-buffer: warn
+  security/detect-no-csrf-before-method-override: warn
+  security/detect-non-literal-fs-filename: warn
+  security/detect-non-literal-regexp: warn
+  security/detect-non-literal-require: warn
+  security/detect-possible-timing-attacks: warn
+  security/detect-pseudoRandomBytes: warn
+  security/detect-unsafe-regex: warn
+
+  eqeqeq: error
+  no-console: warn
+  no-path-concat: error
+  no-unused-vars: [error, {argsIgnorePattern: "^_|next"}]
+  no-var: error
+  one-var: [error, never]
+  prefer-const: error
+  quotes: [error, single]