add prettier

Author: ianstormtaylor

.eslintrc

@@ -1,6 +1,10 @@
 {
+  "extends": [
+    "prettier"
+  ],
   "plugins": [
-    "import"
+    "import",
+    "prettier"
   ],
   "settings": {
     "import/extensions": [".js"]
@@ -18,20 +22,9 @@
     "node": true
   },
   "rules": {
-    "arrow-parens": ["error", "as-needed", { "requireForBlockBody": true }],
-    "arrow-spacing": "error",
-    "block-spacing": "error",
-    "comma-dangle": ["error", "only-multiline"],
-    "comma-spacing": ["error", { "before": false, "after": true }],
-    "comma-style": ["error", "last"],
-    "computed-property-spacing": ["error", "never"],
     "constructor-super": "error",
-    "curly": ["error", "multi-line"],
-    "dot-location": ["error", "property"],
     "dot-notation": ["error", { "allowKeywords": true }],
-    "eol-last": "error",
     "eqeqeq": ["error", "smart"],
-    "func-call-spacing": ["error", "never"],
     "import/default": "error",
     "import/export": "error",
     "import/first": "error",
@@ -44,9 +37,6 @@
     "import/no-named-as-default": "error",
     "import/no-named-as-default-member": "error",
     "import/no-unresolved": "error",
-    "indent": ["error", 2, { "SwitchCase": 1, "MemberExpression": 1 }],
-    "key-spacing": ["error", { "beforeColon": false, "afterColon": true }],
-    "keyword-spacing": ["error", { "before": true, "after": true }],
     "linebreak-style": "error",
     "lines-around-comment": ["error", { "beforeBlockComment": true, "afterBlockComment": true, "allowBlockStart": true, "allowObjectStart": true, "allowArrayStart": true }],
     "new-parens": "error",
@@ -68,9 +58,6 @@
     "no-func-assign": "error",
     "no-invalid-regexp": "error",
     "no-lonely-if": "error",
-    "no-mixed-spaces-and-tabs": ["error", false],
-    "no-multi-spaces": "error",
-    "no-multiple-empty-lines": ["error", { "max": 2, "maxEOF": 1 }],
     "no-native-reassign": "error",
     "no-negated-in-lhs": "error",
     "no-new-object": "error",
@@ -81,11 +68,9 @@
     "no-sequences": "error",
     "no-shadow": "error",
     "no-shadow-restricted-names": "error",
-    "no-spaced-func": "error",
     "no-tabs": "error",
     "no-this-before-super": "error",
     "no-throw-literal": "error",
-    "no-trailing-spaces": "error",
     "no-undef": "error",
     "no-unneeded-ternary": "error",
     "no-unreachable": "error",
@@ -99,31 +84,16 @@
     "no-useless-rename": "error",
     "no-var": "error",
     "no-void": "error",
-    "no-whitespace-before-property": "error",
     "no-with": "error",
-    "object-curly-spacing": ["error", "always", { "objectsInObjects": false }],
-    "object-property-newline": ["error", { "allowMultiplePropertiesPerLine": true }],
     "object-shorthand": ["error", "always"],
-    "operator-linebreak": ["error", "after", { "overrides": { "?": "ignore", ":": "ignore" }}],
-    "padded-blocks": ["error", { "blocks": "never", "classes": "always" }],
     "prefer-arrow-callback": "error",
     "prefer-const": ["error", { "destructuring": "all", "ignoreReadBeforeAssign": true }],
     "prefer-rest-params": "error",
     "prefer-spread": "error",
     "prefer-template": "error",
-    "quotes": ["error", "single", { "allowTemplateLiterals": true }],
+    "prettier/prettier": "error",
     "radix": "error",
-    "rest-spread-spacing": ["error", "never"],
-    "semi": ["error", "never"],
-    "space-before-blocks": "error",
-    "space-before-function-paren": ["error", { "anonymous": "always", "named": "never" }],
-    "space-in-parens": "error",
-    "space-infix-ops": "error",
-    "space-unary-ops": ["error", { "words": true, "nonwords": false }],
     "spaced-comment": ["error", "always", { "exceptions": ["-"]}],
-    "template-curly-spacing": "error",
-    "template-tag-spacing": ["error", "never"],
-    "unicode-bom": ["error", "never"],
     "use-isnan": "error",
     "valid-jsdoc": ["error", { "prefer": { "return": "returns" }, "requireReturn": false }],
     "valid-typeof": "error",

.prettierignore

@@ -0,0 +1,6 @@
+lib/
+node_modules/
+umd/
+.babelrc
+.eslintrc
+package.json

.prettierrc

@@ -0,0 +1,5 @@
+{
+  "singleQuote": true,
+  "semi": false,
+  "trailingComma": "es5"
+}

Changelog.md

@@ -1,80 +1,67 @@
-
 # Changelog
 
 This document maintains a list of changes to the `superstruct` package with each new version. Until `1.0.0` is released, breaking changes will be added as minor version bumps, and smaller changes and fixes won't be detailed.
 
-
 ---
 
-
 ### `0.5.0` — December 21, 2017
 
 ###### BREAKING
 
-- **Validators must now return `true`, `false` or an error reason string.** Previously any truthy value would be considered valid. Now you can provide more information for the thrown errors by providing a string which will be attached as `error.reason`. However, this means that truthy string values now equate to invalid, not valid.
+* **Validators must now return `true`, `false` or an error reason string.** Previously any truthy value would be considered valid. Now you can provide more information for the thrown errors by providing a string which will be attached as `error.reason`. However, this means that truthy string values now equate to invalid, not valid.
 
-- **Property validators now receive `data` as their second argument.** Previously you only had access to the property `value`, but now you also have access to the entire object's `data`.
+* **Property validators now receive `data` as their second argument.** Previously you only had access to the property `value`, but now you also have access to the entire object's `data`.
 
 ###### NEW
 
-- **Errors can now contain reason information.** Validator functions can now return string instead of a boolean, denoting the reason a value was invalid. This can then be used to create more helpful error messages.
-
+* **Errors can now contain reason information.** Validator functions can now return string instead of a boolean, denoting the reason a value was invalid. This can then be used to create more helpful error messages.
 
 ---
 
-
 ### `0.4.0` — December 1, 2017
 
 ###### BREAKING
 
-- **`object` structs are no longer optional-ish.** Previously object struct types would not throw if `undefined` was passed and no properties were required. This was not only confusing, but complex to maintain. Now if you want an object struct to be optional, use the `struct.optional(...)` helper.
+* **`object` structs are no longer optional-ish.** Previously object struct types would not throw if `undefined` was passed and no properties were required. This was not only confusing, but complex to maintain. Now if you want an object struct to be optional, use the `struct.optional(...)` helper.
 
-- **Removed the `Struct.default` method.** If you need to get the default value, use the `Struct.validate` or `Struct.assert` methods's return value instead.
+* **Removed the `Struct.default` method.** If you need to get the default value, use the `Struct.validate` or `Struct.assert` methods's return value instead.
 
 ###### NEW
 
-- **Added the `dict`, `enum`, `intersection`, `union` and `tuple` structs.** These are all available as `struct.dict`, `struct.enum`, etc.
-
+* **Added the `dict`, `enum`, `intersection`, `union` and `tuple` structs.** These are all available as `struct.dict`, `struct.enum`, etc.
 
 ---
 
-
 ### `0.3.0` — November 30, 2017
 
 ###### BREAKING
 
-- **The `validate()` method now returns `[ error, result ]`.** Previously it only had a single return value, which necessitated extra type checking to see if the value was an error or a result. Now you can just destructure the array to get either return value, for easier coding.
-
-- **Errors have been simplified, removing "codes".** Previously there were multiple types of errors that were thrown and you could differentiate between them with the `error.code` property. But the other properties of the error already let you infer the code, so having multiple types of errors made for a larger API surface without much benefit.
+* **The `validate()` method now returns `[ error, result ]`.** Previously it only had a single return value, which necessitated extra type checking to see if the value was an error or a result. Now you can just destructure the array to get either return value, for easier coding.
 
+* **Errors have been simplified, removing "codes".** Previously there were multiple types of errors that were thrown and you could differentiate between them with the `error.code` property. But the other properties of the error already let you infer the code, so having multiple types of errors made for a larger API surface without much benefit.
 
 ---
 
-
 ### `0.2.0` — November 30, 2017
 
 ###### BREAKING
 
-- **Structs are now functions again.** :smile: They are built on the same underlying schema classes underneath though, since that helps the code structure. But to allow for the `struct = Struct({ ... })` syntax the structs themselves have changed to be function.
+* **Structs are now functions again.** :smile: They are built on the same underlying schema classes underneath though, since that helps the code structure. But to allow for the `struct = Struct({ ... })` syntax the structs themselves have changed to be function.
 
 ###### NEW
 
-- **The basic case is now `Struct(data)`.** Previously you had to use `Struct.assert(data)`. Although the `assert` method (and others) are still there, the basic case is a bit terser and more similar to the struct-initializing APIs in other languages.
-
+* **The basic case is now `Struct(data)`.** Previously you had to use `Struct.assert(data)`. Although the `assert` method (and others) are still there, the basic case is a bit terser and more similar to the struct-initializing APIs in other languages.
 
 ---
 
-
 ### `0.1.0` — November 29, 2017
 
 ###### BREAKING
 
-- **Structs are now classes instead of functions.** This is better in terms of the API being a bit less magic-y. It's also useful so that we can add other helpful methods to structs besides the `assert` method. What was previously `struct(data)` is now `struct.assert(data)`.
-
+* **Structs are now classes instead of functions.** This is better in terms of the API being a bit less magic-y. It's also useful so that we can add other helpful methods to structs besides the `assert` method. What was previously `struct(data)` is now `struct.assert(data)`.
 
 ---
 
-
 ### `0.0.0` — November 24, 2017
 
 :tada: