Add Prettier, Eslint and Husky

.eslintrc.yaml

@@ -0,0 +1,37 @@
+env:
+  browser: true
+  node: true
+
+plugins:
+  - prettier
+
+extends:
+  - prettier
+
+parserOptions:
+  ecmaVersion: 8
+  sourceType: module
+  ecmaFeatures:
+    jsx: true
+
+rules:
+  curly: 2
+  dot-notation: 2
+  no-const-assign: 2
+  no-dupe-class-members: 2
+  no-else-return: 2
+  no-inner-declarations: 2
+  no-lonely-if: 2
+  no-unneeded-ternary: 2
+  no-unused-expressions: 2
+  no-unused-vars: [2, {args: none}]
+  no-useless-return: 2
+  no-var: 2
+  one-var: [2, never]
+  prefer-arrow-callback: 2
+  prefer-const: 2
+  prefer-promise-reject-errors: 2
+  prettier/prettier: 2
+  sort-imports: 2
+  sort-vars: 2
+  strict: [2, global]

.prettierignore

@@ -0,0 +1 @@
+**/dist/**

.prettierrc.yaml

@@ -0,0 +1,16 @@
+arrowParens: avoid
+bracketSpacing: false
+jsxBracketSameLine: false
+printWidth: 80
+proseWrap: never
+requirePragma: false
+semi: false
+singleQuote: true
+tabWidth: 2
+trailingComma: all
+useTabs: false
+
+overrides:
+- files: "*.json"
+  options:
+    printWidth: 400

doc/faq.md

@@ -1,6 +1,7 @@
 # FAQ
 
 ## Disabling one method on an instance at runtime
+
 ```js
 // To disable a given method, just pass a no-op to it
 logger.warn = function() {}
@@ -12,24 +13,27 @@ logger.warn = logdown.prototype.warn
 ## Align prefixes
 
 If you want to align the output of each instance, like the example below:
+
 ```
 [ipsum]   lorem
 [sitamet] lorem
 [dolor]   lorem
 ```
 
 Use the the following function
+
 ```js
 function alignPrefixes(Logdown) {
-  var longest = logdown._instances.sort(function (a, b) {
+  var longest = logdown._instances.sort(function(a, b) {
     return b.opts.prefix.length - a.opts.prefix.length
   })[0]
 
-  logdown._instances
-    .forEach(function (instance) {
-      var padding = new Array(Math.max(longest.opts.prefix.length - instance.opts.prefix.length + 1, 0)).join(' ')
-      instance.opts.prefix = instance.opts.prefix + padding
-    })
+  logdown._instances.forEach(function(instance) {
+    var padding = new Array(
+      Math.max(longest.opts.prefix.length - instance.opts.prefix.length + 1, 0),
+    ).join(' ')
+    instance.opts.prefix = instance.opts.prefix + padding
+  })
 }
 ```