Add linting/editor config

.editorconfig

@@ -0,0 +1,10 @@
+root = true
+
+[*]
+end_of_line = lf
+insert_final_newline = true
+indent_style = space
+indent_size = 4
+
+[*.md]
+trim_trailing_whitespace = false

.eslintrc

@@ -0,0 +1,21 @@
+{
+    "extends": ["eslint:recommended", "plugin:prettier/recommended"],
+    "rules": {
+        "prettier/prettier": [
+            "error",
+            {
+                "singleQuote": true,
+                "tabWidth": "4"
+            }
+        ],
+        "no-console": "off"
+    },
+    "env": {
+        "node": true,
+        "jest": true,
+        "es6": true
+    },
+    "parserOptions": {
+        "ecmaVersion": 8
+    }
+}

.gitattributes

@@ -0,0 +1,9 @@
+# Set the default behavior, in case people don't have core.autocrlf set
+* text=auto
+
+# Require Unix line endings
+* text eol=lf
+
+# Denote all files that are truly binary and should not be modified.
+*.png binary
+*.zip binary

.gitignore

@@ -0,0 +1,7 @@
+.idea
+.vscode
+.DS_Store
+.npm
+.env
+npm-debug.log
+node_modules