Add ESLint

.eslintrc.json

@@ -0,0 +1,18 @@
+{
+    "env": {
+        "browser": true,
+        "es6": true,
+        "node": true
+    },
+    "extends": "eslint:recommended",
+    "globals": {
+        "Atomics": "readonly",
+        "SharedArrayBuffer": "readonly"
+    },
+    "parserOptions": {
+        "ecmaVersion": 2018,
+        "sourceType": "module"
+    },
+    "rules": {
+    }
+}

.prettierrc

@@ -6,6 +6,12 @@
         "parser": "html",
         "htmlWhitespaceSensitivity": "ignore"
       }
+    },
+    {
+      "files": "*.md",
+      "options": {
+        "tabWidth": 4
+      }
     }
   ]
 }

CODE_OF_CONDUCT.md

@@ -14,22 +14,22 @@ appearance, race, religion, or sexual identity and orientation.
 Examples of behavior that contributes to creating a positive environment
 include:
 
-- Using welcoming and inclusive language
+-   Using welcoming and inclusive language
-- Being respectful of differing viewpoints and experiences
+-   Being respectful of differing viewpoints and experiences
-- Gracefully accepting constructive criticism
+-   Gracefully accepting constructive criticism
-- Focusing on what is best for the community
+-   Focusing on what is best for the community
-- Showing empathy towards other community members
+-   Showing empathy towards other community members
 
 Examples of unacceptable behavior by participants include:
 
-- The use of sexualized language or imagery and unwelcome sexual attention or
+-   The use of sexualized language or imagery and unwelcome sexual attention or
-  advances
+    advances
-- Trolling, insulting/derogatory comments, and personal or political attacks
+-   Trolling, insulting/derogatory comments, and personal or political attacks
-- Public or private harassment
+-   Public or private harassment
-- Publishing others' private information, such as a physical or electronic
+-   Publishing others' private information, such as a physical or electronic
-  address, without explicit permission
+    address, without explicit permission
-- Other conduct which could reasonably be considered inappropriate in a
+-   Other conduct which could reasonably be considered inappropriate in a
-  professional setting
+    professional setting
 
 ## Our Responsibilities
 
@@ -68,9 +68,9 @@ members of the project's leadership.
 ## Attribution
 
 This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4,
-available at https://www.contributor-covenant.org/version/1/4/code-of-conduct.html
+available at <https://www.contributor-covenant.org/version/1/4/code-of-conduct.html>
 
 [homepage]: https://www.contributor-covenant.org
 
 For answers to common questions about this code of conduct, see
-https://www.contributor-covenant.org/faq
+<https://www.contributor-covenant.org/faq>

package.json

@@ -43,6 +43,7 @@
     "ncp": "^2.0.0"
   },
   "devDependencies": {
+    "eslint": "^6.7.2",
     "prettier": "1.19.1"
   }
 }