Add eslint

Author: Madeline Trotter

.eslintrc.yml

@@ -0,0 +1,22 @@
+env:
+  browser: true
+  commonjs: true
+  es6: true
+  node: true
+extends:
+  - eslint:recommended
+  - plugin:prettier/recommended
+globals:
+  Atomics: readonly
+  SharedArrayBuffer: readonly
+parserOptions:
+  ecmaFeatures:
+    jsx: false
+  ecmaVersion: 2018
+rules:
+  strict:
+    - error
+    - global
+  no-unused-vars:
+    - error
+    - argsIgnorePattern: ^_

docs/.eslintrc.yml

@@ -0,0 +1,12 @@
+extends:
+  - plugin:react/recommended
+parser: babel-eslint
+parserOptions:
+  sourceType: module
+  ecmaFeatures:
+    jsx: true
+settings:
+  react:
+    version: detect
+rules:
+  react/prop-types: 0

docs/App.jsx

@@ -1,3 +1,6 @@
+/* eslint-disable react/jsx-key */
+/* global COMMITHASH, VERSION */
+
 import React, { Component, useState, useEffect } from "react";
 import { Link, NavLink, Redirect, Route, Switch } from "react-router-dom";
 import Media from "react-media";
@@ -217,6 +220,7 @@ const renderRoute = component => (
             <a
               className="lumi"
               target="_blank"
+              rel="noopener noreferrer"
               href={component.componentSource}
               style={{
                 marginLeft: "8px",
@@ -229,6 +233,7 @@ const renderRoute = component => (
             <a
               className="lumi"
               target="_blank"
+              rel="noopener noreferrer"
               href={component.exampleSource}
               style={{
                 marginLeft: "8px",
@@ -241,6 +246,7 @@ const renderRoute = component => (
             <a
               className="lumi"
               target="_blank"
+              rel="noopener noreferrer"
               href={component.apiReference}
               style={{
                 marginLeft: "8px"