chore: replace XO with eslint and prettier

Remove the XO tool with eslint and prettier, along with updating the
linter rules.

.eslintrc.yml

@@ -0,0 +1,25 @@
+extends:
+  - es/2015/server
+  - plugin:prettier/recommended
+  - plugin:eslint-comments/recommended
+  - plugin:node/recommended
+  - plugin:security/recommended
+  - plugin:promise/recommended
+plugins:
+  - eslint-comments
+  - node
+  - security
+  - promise
+  - notice
+rules:
+  prefer-reflect: off
+  no-underscore-dangle:
+    - error
+    - allowAfterThis: true
+  prefer-rest-params: off
+  node/exports-style:
+    - error
+    - module.exports
+  notice/notice:
+    - error
+    - template: "/*\n * Copyright (C) 2014-present Cloudflare, Inc.\n\n * This software may be modified and distributed under the terms\n * of the MIT license.  See the LICENSE file for details.\n */"

.prettierrc.yaml

@@ -0,0 +1,8 @@
+printWidth: 80
+tabWidth: 2
+useTabs: false
+semi: true
+singleQuote: true
+trailingComma: es5
+bracketSpacing: false
+parser: babylon

index.js

@@ -1,17 +1,27 @@
+/*
+ * Copyright (C) 2014-present Cloudflare, Inc.
+
+ * This software may be modified and distributed under the terms
+ * of the MIT license.  See the LICENSE file for details.
+ */
+
 'use strict';
-var prototypal = require('es-class');
-var auto = require('autocreate');
 
-var Client = require('./lib/Client');
+const prototypal = require('es-class');
+const auto = require('autocreate');
+
+const Client = require('./lib/Client');
 
-var resources = {
+/* eslint-disable global-require */
+const resources = {
   dnsRecords: require('./lib/resources/DNSRecords'),
   ips: require('./lib/resources/IPs'),
   zones: require('./lib/resources/Zones'),
   zoneSettings: require('./lib/resources/ZoneSettings'),
   zoneCustomHostNames: require('./lib/resources/ZoneCustomHostNames'),
-  user: require('./lib/resources/User')
+  user: require('./lib/resources/User'),
 };
+/* eslint-enable global-require */
 
 /**
  * Constructs and returns a new Cloudflare API client with the specified authentication.
@@ -28,29 +38,31 @@ var resources = {
  * @property {ZoneCustomHostNames} zoneCustomHostNames - Zone Custom Host Names instance
  * @property {User} user - User instance
  */
-var Cloudflare = auto(prototypal({
-  constructor: function (auth) {
-    var client = new Client({
-      email: auth && auth.email,
-      key: auth && auth.key
-    });
-
-    Object.defineProperty(this, '_client', {
-      value: client,
-      writable: false,
-      enumerable: false,
-      configurable: false
-    });
-
-    Object.keys(resources).forEach(function (resource) {
-      Object.defineProperty(this, resource, {
-        value: resources[resource](this._client),
-        writable: true,
+const Cloudflare = auto(
+  prototypal({
+    constructor: function constructor(auth) {
+      const client = new Client({
+        email: auth && auth.email,
+        key: auth && auth.key,
+      });
+
+      Object.defineProperty(this, '_client', {
+        value: client,
+        writable: false,
         enumerable: false,
-        configurable: true
+        configurable: false,
       });
-    }, this);
-  }
-}));
+
+      Object.keys(resources).forEach(function(resource) {
+        Object.defineProperty(this, resource, {
+          value: resources[resource](this._client), // eslint-disable-line security/detect-object-injection
+          writable: true,
+          enumerable: false,
+          configurable: true,
+        });
+      }, this);
+    },
+  })
+);
 
 module.exports = Cloudflare;

lib/Client.js

@@ -1,49 +1,59 @@
+/*
+ * Copyright (C) 2014-present Cloudflare, Inc.
+
+ * This software may be modified and distributed under the terms
+ * of the MIT license.  See the LICENSE file for details.
+ */
+
 'use strict';
-var prototypal = require('es-class');
-var pkg = require('../package.json');
-var Getter = require('./Getter');
 
-var USER_AGENT = JSON.stringify({
+const prototypal = require('es-class');
+const pkg = require('../package.json');
+const Getter = require('./Getter');
+
+const USER_AGENT = JSON.stringify({
   bindings_version: pkg.version, // eslint-disable-line camelcase
   lang: 'node',
   lang_version: process.version, // eslint-disable-line camelcase
   platform: process.platform,
   arch: process.arch,
-  publisher: 'cloudflare'
+  publisher: 'cloudflare',
 });
 
-function isPlainObject(x) {
-  var prototype = Object.getPrototypeOf(x);
-  var toString = Object.prototype.toString;
+const isPlainObject = function isPlainObject(x) {
+  const prototype = Object.getPrototypeOf(x);
+  const toString = Object.prototype.toString;
 
-  return toString.call(x) === '[object Object]' &&
-    (prototype === null || prototype === Object.getPrototypeOf({}));
-}
+  return (
+    toString.call(x) === '[object Object]' &&
+    (prototype === null || prototype === Object.getPrototypeOf({}))
+  );
+};
 
-function isUserServiceKey(x) {
+const isUserServiceKey = function isUserServiceKey(x) {
   return x && x.substring(0, 5) === 'v1.0-';
-}
+};
 
 module.exports = prototypal({
-  constructor: function (options) {
+  constructor: function constructor(options) {
     this.email = options.email;
     this.key = options.key;
     this.getter = new Getter(options);
   },
-  request: function (requestMethod, requestPath, data, opts) {
-    var uri = 'https://api.cloudflare.com/client/v4/' + requestPath;
+  request(requestMethod, requestPath, data, opts) {
+    const uri = `https://api.cloudflare.com/client/v4/${requestPath}`;
 
-    var options = {
+    const options = {
       json: true,
-      timeout: opts.timeout || 1E4,
+      timeout: opts.timeout || 1e4,
       retries: opts.retries,
       method: requestMethod,
       headers: {
-        'user-agent': 'cloudflare/' + pkg.version + ' node/' + process.versions.node,
+        'user-agent': `cloudflare/${pkg.version} node/${process.versions.node}`,
         'Content-Type': 'application/json',
         Accept: 'application/json',
-        'X-Cloudflare-Client-User-Agent': USER_AGENT
-      }
+        'X-Cloudflare-Client-User-Agent': USER_AGENT,
+      },
     };
 
     if (isUserServiceKey(opts.auth.key || this.key)) {
@@ -63,8 +73,6 @@ module.exports = prototypal({
       options.body = JSON.stringify(options.body);
     }
 
-    return this.getter.got(uri, options).then(function (res) {
-      return res.body;
-    });
-  }
+    return this.getter.got(uri, options).then(res => res.body);
+  },
 });

lib/Getter.js

@@ -1,12 +1,20 @@
+/*
+ * Copyright (C) 2014-present Cloudflare, Inc.
+
+ * This software may be modified and distributed under the terms
+ * of the MIT license.  See the LICENSE file for details.
+ */
+
 'use strict';
-var prototypal = require('es-class');
-var assign = require('object-assign');
-var got = require('got');
+
+const prototypal = require('es-class');
+const assign = require('object-assign');
+const got = require('got');
 
 module.exports = prototypal({
-  got: function (uri, options) {
+  got(uri, options) {
     options = assign({}, options);
 
     return got(uri, options);
-  }
+  },
 });

lib/Resource.js

@@ -1,26 +1,34 @@
+/*
+ * Copyright (C) 2014-present Cloudflare, Inc.
+
+ * This software may be modified and distributed under the terms
+ * of the MIT license.  See the LICENSE file for details.
+ */
+
 'use strict';
-var prototypal = require('es-class');
-var method = require('./method');
 
-var BASIC_METHODS = {
+const prototypal = require('es-class');
+const method = require('./method');
+
+const BASIC_METHODS = {
   browse: method({
-    method: 'GET'
+    method: 'GET',
   }),
   read: method({
     method: 'GET',
-    path: '/:id'
+    path: '/:id',
   }),
   edit: method({
     method: 'PATCH',
-    path: '/:id'
+    path: '/:id',
   }),
   add: method({
-    method: 'POST'
+    method: 'POST',
   }),
   del: method({
     method: 'DELETE',
-    path: '/:id'
-  })
+    path: '/:id',
+  }),
 };
 
 /**
@@ -33,33 +41,33 @@ var BASIC_METHODS = {
 module.exports = prototypal(
   /** @lends Resource.prototype */
   {
-    constructor: function (client) {
+    constructor: function constructor(client) {
       Object.defineProperty(this, '_client', {
         value: client,
         writable: false,
         enumerable: false,
-        configurable: false
+        configurable: false,
       });
 
       if (Array.isArray(this.includeBasic)) {
-        this.includeBasic.forEach(function (m) {
-          Object.defineProperty(this, m, {
-            value: BASIC_METHODS[m],
+        this.includeBasic.forEach(function(basicMethod) {
+          Object.defineProperty(this, basicMethod, {
+            value: BASIC_METHODS[basicMethod], // eslint-disable-line security/detect-object-injection
             writable: true,
             enumberable: false,
-            configurable: true
+            configurable: true,
           });
         }, this);
       }
     },
-  /**
-   * @param {string} methodPath - The path from the {@link method} that should be
-   *        joined with the resource's path.
-   */
-    createFullPath: function (methodPath) {
+    /**
+     * @param {string} methodPath - The path from the {@link method} that should be
+     *        joined with the resource's path.
+     */
+    createFullPath(methodPath) {
       return (methodPath && [this.path, methodPath].join('/')) || this.path;
     },
     path: '',
-    hasBrokenPatch: false
+    hasBrokenPatch: false,
   }
 );