diff --git a/.eslintrc b/.eslintrc
index 0667d9ddb5..80071df298 100644
--- a/.eslintrc
+++ b/.eslintrc
@@ -2,13 +2,12 @@
     "env": {
         "node": true
     },
+    parserOptions: {
+      ecmaVersion: 2015
+    },
     ecmaFeatures: {
         jsx: true
     },
-    "globals": {
-    },
-    "plugins": [
-    ],
     "rules": {
         // Possible Errors
         "comma-dangle": [2, "never"],
@@ -62,7 +61,7 @@
         "no-lone-blocks": 2,
         "no-loop-func": 2,
         "no-multi-spaces": 2,
-        "no-multi-str": 0,
+        "no-multi-str": 2,
         "no-native-reassign": 2,
         "no-new": 2,
         "no-new-func": 2,
@@ -149,10 +148,16 @@
         "wrap-regex": 0,
         // Legacy
         "max-depth": 0,
-        "max-len": [2, 120],
+        "max-len": [2, 120, {
+          "ignoreStrings": true,
+          "ignoreTemplateLiterals": true,
+          "ignoreComments": true,
+        }],
         "max-params": 0,
         "max-statements": 0,
         "no-plusplus": 0,
-        "no-prototype-builtins": 2
+        "no-prototype-builtins": 2,
+        "prefer-template": 2,
+        "template-curly-spacing": [2, "never"]
     }
 }
diff --git a/.travis.yml b/.travis.yml
index 1f6e191125..7ec63cc2fe 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,14 +1,11 @@
+sudo: false
 language: node_js
 node_js:
   - '7'
   - '6'
   - '5'
   - '4'
-  - 'iojs'
-  - '0.12'
-  - '0.10'
 before_script:
-  - 'if [ "${TRAVIS_NODE_VERSION}" = "iojs" ] || [ "${TRAVIS_NODE_VERSION}" = "0.12" ] || [ "${TRAVIS_NODE_VERSION}" = "0.10" ]; then npm install eslint@2 babel-eslint@6; fi'
 after_success:
   - npm run coveralls
 matrix:
diff --git a/appveyor.yml b/appveyor.yml
index d493bb56e4..b5a80ad3fa 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -3,6 +3,7 @@ environment:
     - nodejs_version: '4'
     - nodejs_version: '5'
     - nodejs_version: '6'
+    - nodejs_version: '7'
 install:
   - ps: Install-Product node $env:nodejs_version
   - set CI=true
diff --git a/docs/rules/forbid-elements.md b/docs/rules/forbid-elements.md
index 9be67e56ed..951d990205 100644
--- a/docs/rules/forbid-elements.md
+++ b/docs/rules/forbid-elements.md
@@ -16,12 +16,12 @@ This rule checks all JSX elements and `React.createElement` calls and verifies t
 
 ### `forbid`
 
-An array of strings and/or objects. An object in this array may have the following properties: 
+An array of strings and/or objects. An object in this array may have the following properties:
 
 * `element` (required): the name of the forbidden element (e.g. `'button'`, `'Modal'`)
 * `message`: additional message that gets reported
 
-A string item in the array is a shorthand for `{ element: string }`. 
+A string item in the array is a shorthand for `{ element: string }`.
 
 The following patterns are not considered warnings:
 
@@ -50,7 +50,7 @@ React.createElement(Namespaced.Element);
 
 // [1, { "forbid": [{ "element": "button", "message": "use <Button> instead" }, "input"] }]
 <div><button /><input /></div>
-React.createElement('div', {}, React.createElemet('button', {}, React.createElement('input')));
+React.createElement('div', {}, React.createElement('button', {}, React.createElement('input')));
 ```
 
 ## When not to use
diff --git a/index.js b/index.js
index 9fd15e15bf..3f78c17744 100644
--- a/index.js
+++ b/index.js
@@ -83,7 +83,7 @@ function configureAsError(rules) {
     if (!has(rules, key)) {
       continue;
     }
-    result['react/' + key] = 2;
+    result[`react/${key}`] = 2;
   }
   return result;
 }
diff --git a/lib/rules/forbid-component-props.js b/lib/rules/forbid-component-props.js
index 8d6ba9f9b3..ef3a70d6db 100644
--- a/lib/rules/forbid-component-props.js
+++ b/lib/rules/forbid-component-props.js
@@ -61,7 +61,7 @@ module.exports = {
 
         context.report({
           node: node,
-          message: 'Prop `' + prop + '` is forbidden on Components'
+          message: `Prop \`${prop}\` is forbidden on Components`
         });
       }
     };
diff --git a/lib/rules/forbid-elements.js b/lib/rules/forbid-elements.js
index 8cce882fb4..e7d49be36f 100644
--- a/lib/rules/forbid-elements.js
+++ b/lib/rules/forbid-elements.js
@@ -59,11 +59,11 @@ module.exports = {
     });
 
     function errorMessageForElement(name) {
-      var message = '<' + name + '> is forbidden';
+      var message = `<${name}> is forbidden`;
       var additionalMessage = indexedForbidConfigs[name].message;
 
       if (additionalMessage) {
-        message = message + ', ' + additionalMessage;
+        return `${message}, ${additionalMessage}`;
       }
 
       return message;
diff --git a/lib/rules/forbid-foreign-prop-types.js b/lib/rules/forbid-foreign-prop-types.js
index f1b7737674..02b0dfbc9a 100644
--- a/lib/rules/forbid-foreign-prop-types.js
+++ b/lib/rules/forbid-foreign-prop-types.js
@@ -4,8 +4,6 @@
  */
 'use strict';
 
-var find = require('array.prototype.find');
-
 // ------------------------------------------------------------------------------
 // Constants
 // ------------------------------------------------------------------------------
@@ -47,7 +45,7 @@ module.exports = {
       },
 
       ObjectPattern: function(node) {
-        var propTypesNode = find(node.properties, function(property) {
+        var propTypesNode = node.properties.find(function(property) {
           return property.type === 'Property' && property.key.name === 'propTypes';
         });
 
diff --git a/lib/rules/forbid-prop-types.js b/lib/rules/forbid-prop-types.js
index 0a59b1637c..b9cbda2bfe 100644
--- a/lib/rules/forbid-prop-types.js
+++ b/lib/rules/forbid-prop-types.js
@@ -102,7 +102,7 @@ module.exports = {
         if (isForbidden(target)) {
           context.report({
             node: declaration,
-            message: 'Prop type `' + target + '` is forbidden'
+            message: `Prop type \`${target}\` is forbidden`
           });
         }
       });
diff --git a/lib/rules/jsx-closing-bracket-location.js b/lib/rules/jsx-closing-bracket-location.js
index 67520506cb..b6a5eb0dc3 100644
--- a/lib/rules/jsx-closing-bracket-location.js
+++ b/lib/rules/jsx-closing-bracket-location.js
@@ -248,8 +248,7 @@ module.exports = {
         if (correctColumn !== null) {
           expectedNextLine = tokens.lastProp &&
             (tokens.lastProp.lastLine === tokens.closing.line);
-          data.details = ' (expected column ' + (correctColumn + 1) +
-            (expectedNextLine ? ' on the next line)' : ')');
+          data.details = ` (expected column ${correctColumn + 1}${expectedNextLine ? ' on the next line)' : ')'}`;
         }
 
         context.report({
@@ -274,7 +273,7 @@ module.exports = {
               case 'tag-aligned':
               case 'line-aligned':
                 return fixer.replaceTextRange([cachedLastAttributeEndPos, node.end],
-                  '\n' + getIndentation(tokens, expectedLocation, correctColumn) + closingTag);
+                  `\n${getIndentation(tokens, expectedLocation, correctColumn)}${closingTag}`);
               default:
                 return true;
             }
diff --git a/lib/rules/jsx-curly-spacing.js b/lib/rules/jsx-curly-spacing.js
index 432809de5c..87772d8028 100644
--- a/lib/rules/jsx-curly-spacing.js
+++ b/lib/rules/jsx-curly-spacing.js
@@ -83,7 +83,7 @@ module.exports = {
       context.report({
         node: node,
         loc: token.loc.start,
-        message: 'There should be no newline after \'' + token.value + '\'',
+        message: `There should be no newline after '${token.value}'`,
         fix: function(fixer) {
           var nextToken = sourceCode.getTokenAfter(token);
           return fixer.replaceTextRange([token.range[1], nextToken.range[0]], spaced ? ' ' : '');
@@ -101,7 +101,7 @@ module.exports = {
       context.report({
         node: node,
         loc: token.loc.start,
-        message: 'There should be no newline before \'' + token.value + '\'',
+        message: `There should be no newline before '${token.value}'`,
         fix: function(fixer) {
           var previousToken = sourceCode.getTokenBefore(token);
           return fixer.replaceTextRange([previousToken.range[1], token.range[0]], spaced ? ' ' : '');
@@ -119,7 +119,7 @@ module.exports = {
       context.report({
         node: node,
         loc: token.loc.start,
-        message: 'There should be no space after \'' + token.value + '\'',
+        message: `There should be no space after '${token.value}'`,
         fix: function(fixer) {
           var nextToken = sourceCode.getTokenAfter(token);
           var leadingComments = sourceCode.getNodeByRangeIndex(nextToken.range[0]).leadingComments;
@@ -139,7 +139,7 @@ module.exports = {
       context.report({
         node: node,
         loc: token.loc.start,
-        message: 'There should be no space before \'' + token.value + '\'',
+        message: `There should be no space before '${token.value}'`,
         fix: function(fixer) {
           var previousToken = sourceCode.getTokenBefore(token);
           var trailingComments = sourceCode.getNodeByRangeIndex(previousToken.range[0]).trailingComments;
@@ -159,7 +159,7 @@ module.exports = {
       context.report({
         node: node,
         loc: token.loc.start,
-        message: 'A space is required after \'' + token.value + '\'',
+        message: `A space is required after '${token.value}'`,
         fix: function(fixer) {
           return fixer.insertTextAfter(token, ' ');
         }
@@ -176,7 +176,7 @@ module.exports = {
       context.report({
         node: node,
         loc: token.loc.start,
-        message: 'A space is required before \'' + token.value + '\'',
+        message: `A space is required before '${token.value}'`,
         fix: function(fixer) {
           return fixer.insertTextBefore(token, ' ');
         }
diff --git a/lib/rules/jsx-filename-extension.js b/lib/rules/jsx-filename-extension.js
index 04b5c41a56..628850ab04 100644
--- a/lib/rules/jsx-filename-extension.js
+++ b/lib/rules/jsx-filename-extension.js
@@ -85,7 +85,7 @@ module.exports = {
 
         context.report({
           node: invalidNode,
-          message: 'JSX not allowed in files with extension \'' + invalidExtension + '\''
+          message: `JSX not allowed in files with extension '${invalidExtension}'`
         });
       }
     };
diff --git a/lib/rules/jsx-handler-names.js b/lib/rules/jsx-handler-names.js
index 4ed731baf9..7e9284e2ff 100644
--- a/lib/rules/jsx-handler-names.js
+++ b/lib/rules/jsx-handler-names.js
@@ -37,9 +37,8 @@ module.exports = {
     var eventHandlerPrefix = configuration.eventHandlerPrefix || 'handle';
     var eventHandlerPropPrefix = configuration.eventHandlerPropPrefix || 'on';
 
-    var EVENT_HANDLER_REGEX = new RegExp('^((props\\.' + eventHandlerPropPrefix + ')'
-                                        + '|((.*\\.)?' + eventHandlerPrefix + '))[A-Z].*$');
-    var PROP_EVENT_HANDLER_REGEX = new RegExp('^(' + eventHandlerPropPrefix + '[A-Z].*|ref)$');
+    var EVENT_HANDLER_REGEX = new RegExp(`^((props\\.${eventHandlerPropPrefix})|((.*\\.)?${eventHandlerPrefix}))[A-Z].*$`);
+    var PROP_EVENT_HANDLER_REGEX = new RegExp(`^(${eventHandlerPropPrefix}[A-Z].*|ref)$`);
 
     return {
       JSXAttribute: function(node) {
@@ -60,12 +59,12 @@ module.exports = {
         if (propIsEventHandler && !propFnIsNamedCorrectly) {
           context.report({
             node: node,
-            message: 'Handler function for ' + propKey + ' prop key must begin with \'' + eventHandlerPrefix + '\''
+            message: `Handler function for ${propKey} prop key must begin with '${eventHandlerPrefix}'`
           });
         } else if (propFnIsNamedCorrectly && !propIsEventHandler) {
           context.report({
             node: node,
-            message: 'Prop key for ' + propValue + ' must begin with \'' + eventHandlerPropPrefix + '\''
+            message: `Prop key for ${propValue} must begin with '${eventHandlerPropPrefix}'`
           });
         }
       }
diff --git a/lib/rules/jsx-indent-props.js b/lib/rules/jsx-indent-props.js
index d0315f16a6..059b50c7b3 100644
--- a/lib/rules/jsx-indent-props.js
+++ b/lib/rules/jsx-indent-props.js
@@ -128,9 +128,9 @@ module.exports = {
 
       var regExp;
       if (indentType === 'space') {
-        regExp = new RegExp('^[ ' + skip + ']+');
+        regExp = new RegExp(`^[ ${skip}]+`);
       } else {
-        regExp = new RegExp('^[\t' + skip + ']+');
+        regExp = new RegExp(`^[\t${skip}]+`);
       }
 
       var indent = regExp.exec(src);
diff --git a/lib/rules/jsx-indent.js b/lib/rules/jsx-indent.js
index 8d5af5421c..ffc83c593f 100644
--- a/lib/rules/jsx-indent.js
+++ b/lib/rules/jsx-indent.js
@@ -144,9 +144,9 @@ module.exports = {
 
       var regExp;
       if (indentType === 'space') {
-        regExp = new RegExp('^[ ' + skip + ']+');
+        regExp = new RegExp(`^[ ${skip}]+`);
       } else {
-        regExp = new RegExp('^[\t' + skip + ']+');
+        regExp = new RegExp(`^[\t${skip}]+`);
       }
 
       var indent = regExp.exec(src);
diff --git a/lib/rules/jsx-max-props-per-line.js b/lib/rules/jsx-max-props-per-line.js
index 1157784ca0..c4344fd8f2 100644
--- a/lib/rules/jsx-max-props-per-line.js
+++ b/lib/rules/jsx-max-props-per-line.js
@@ -73,7 +73,7 @@ module.exports = {
             var name = getPropName(propsInLine[maximum]);
             context.report({
               node: propsInLine[maximum],
-              message: 'Prop `' + name + '` must be placed on a new line'
+              message: `Prop \`${name}\` must be placed on a new line`
             });
           }
         });
diff --git a/lib/rules/jsx-no-undef.js b/lib/rules/jsx-no-undef.js
index 7639af1671..d496081432 100644
--- a/lib/rules/jsx-no-undef.js
+++ b/lib/rules/jsx-no-undef.js
@@ -67,7 +67,7 @@ module.exports = {
 
       context.report({
         node: node,
-        message: '\'' + node.name + '\' is not defined.'
+        message: `'${node.name}' is not defined.`
       });
     }
 
diff --git a/lib/rules/jsx-pascal-case.js b/lib/rules/jsx-pascal-case.js
index 07ac40874a..dab4c8fd15 100644
--- a/lib/rules/jsx-pascal-case.js
+++ b/lib/rules/jsx-pascal-case.js
@@ -66,7 +66,7 @@ module.exports = {
         if (!isPascalCase && !isCompatTag && !isAllowedAllCaps && !isIgnored) {
           context.report({
             node: node,
-            message: 'Imported JSX component ' + name + ' must be in PascalCase'
+            message: `Imported JSX component ${name} must be in PascalCase`
           });
         }
       }
diff --git a/lib/rules/jsx-wrap-multilines.js b/lib/rules/jsx-wrap-multilines.js
index 7ee23e706c..592bc160b3 100644
--- a/lib/rules/jsx-wrap-multilines.js
+++ b/lib/rules/jsx-wrap-multilines.js
@@ -73,7 +73,7 @@ module.exports = {
           node: node,
           message: 'Missing parentheses around multilines JSX',
           fix: function(fixer) {
-            return fixer.replaceText(node, '(' + sourceCode.getText(node) + ')');
+            return fixer.replaceText(node, `(${sourceCode.getText(node)})`);
           }
         });
       }
diff --git a/lib/rules/no-children-prop.js b/lib/rules/no-children-prop.js
index ebf8304912..54540db784 100644
--- a/lib/rules/no-children-prop.js
+++ b/lib/rules/no-children-prop.js
@@ -4,8 +4,6 @@
  */
 'use strict';
 
-var find = require('array.prototype.find');
-
 // ------------------------------------------------------------------------------
 // Helpers
 // ------------------------------------------------------------------------------
@@ -55,7 +53,7 @@ module.exports = {
         }
 
         var props = node.arguments[1].properties;
-        var childrenProp = find(props, function(prop) {
+        var childrenProp = props.find(function(prop) {
           return prop.key && prop.key.name === 'children';
         });
 
diff --git a/lib/rules/no-danger-with-children.js b/lib/rules/no-danger-with-children.js
index 671bdf40ea..d0920dd58b 100644
--- a/lib/rules/no-danger-with-children.js
+++ b/lib/rules/no-danger-with-children.js
@@ -4,7 +4,6 @@
  */
 'use strict';
 
-var find = require('array.prototype.find');
 var variableUtil = require('../util/variable');
 
 // ------------------------------------------------------------------------------
@@ -21,7 +20,7 @@ module.exports = {
   },
   create: function(context) {
     function findSpreadVariable(name) {
-      return find(variableUtil.variablesInScope(context), function (item) {
+      return variableUtil.variablesInScope(context).find(function (item) {
         return item.name === name;
       });
     }
@@ -34,7 +33,7 @@ module.exports = {
       if (!node.properties) {
         return false;
       }
-      return find(node.properties, function(prop) {
+      return node.properties.find(function(prop) {
         if (prop.type === 'Property') {
           return prop.key.name === propName;
         } else if (prop.type === 'ExperimentalSpreadProperty') {
@@ -54,7 +53,7 @@ module.exports = {
      */
     function findJsxProp(node, propName) {
       var attributes = node.openingElement.attributes;
-      return find(attributes, function (attribute) {
+      return attributes.find(function (attribute) {
         if (attribute.type === 'JSXSpreadAttribute') {
           var variable = findSpreadVariable(attribute.argument.name);
           if (variable && variable.defs.length && variable.defs[0].node.init) {
@@ -95,7 +94,7 @@ module.exports = {
           var props = node.arguments[1];
 
           if (props.type === 'Identifier') {
-            var variable = find(variableUtil.variablesInScope(context), function (item) {
+            var variable = variableUtil.variablesInScope(context).find(function (item) {
               return item.name === props.name;
             });
             if (variable && variable.defs[0].node.init) {
diff --git a/lib/rules/no-deprecated.js b/lib/rules/no-deprecated.js
index f7143a7e3e..947ab930d1 100644
--- a/lib/rules/no-deprecated.js
+++ b/lib/rules/no-deprecated.js
@@ -6,7 +6,6 @@
 'use strict';
 
 var has = require('has');
-var find = require('array.prototype.find');
 
 var pragmaUtil = require('../util/pragma');
 var versionUtil = require('../util/version');
@@ -44,32 +43,32 @@ module.exports = {
     function getDeprecated() {
       var deprecated = {};
       // 0.12.0
-      deprecated[pragma + '.renderComponent'] = ['0.12.0', pragma + '.render'];
-      deprecated[pragma + '.renderComponentToString'] = ['0.12.0', pragma + '.renderToString'];
-      deprecated[pragma + '.renderComponentToStaticMarkup'] = ['0.12.0', pragma + '.renderToStaticMarkup'];
-      deprecated[pragma + '.isValidComponent'] = ['0.12.0', pragma + '.isValidElement'];
-      deprecated[pragma + '.PropTypes.component'] = ['0.12.0', pragma + '.PropTypes.element'];
-      deprecated[pragma + '.PropTypes.renderable'] = ['0.12.0', pragma + '.PropTypes.node'];
-      deprecated[pragma + '.isValidClass'] = ['0.12.0'];
+      deprecated[`${pragma}.renderComponent`] = ['0.12.0', `${pragma}.render`];
+      deprecated[`${pragma}.renderComponentToString`] = ['0.12.0', `${pragma}.renderToString`];
+      deprecated[`${pragma}.renderComponentToStaticMarkup`] = ['0.12.0', `${pragma}.renderToStaticMarkup`];
+      deprecated[`${pragma}.isValidComponent`] = ['0.12.0', `${pragma}.isValidElement`];
+      deprecated[`${pragma}.PropTypes.component`] = ['0.12.0', `${pragma}.PropTypes.element`];
+      deprecated[`${pragma}.PropTypes.renderable`] = ['0.12.0', `${pragma}.PropTypes.node`];
+      deprecated[`${pragma}.isValidClass`] = ['0.12.0'];
       deprecated['this.transferPropsTo'] = ['0.12.0', 'spread operator ({...})'];
       // 0.13.0
-      deprecated[pragma + '.addons.classSet'] = ['0.13.0', 'the npm module classnames'];
-      deprecated[pragma + '.addons.cloneWithProps'] = ['0.13.0', pragma + '.cloneElement'];
+      deprecated[`${pragma}.addons.classSet`] = ['0.13.0', 'the npm module classnames'];
+      deprecated[`${pragma}.addons.cloneWithProps`] = ['0.13.0', `${pragma}.cloneElement`];
       // 0.14.0
-      deprecated[pragma + '.render'] = ['0.14.0', 'ReactDOM.render'];
-      deprecated[pragma + '.unmountComponentAtNode'] = ['0.14.0', 'ReactDOM.unmountComponentAtNode'];
-      deprecated[pragma + '.findDOMNode'] = ['0.14.0', 'ReactDOM.findDOMNode'];
-      deprecated[pragma + '.renderToString'] = ['0.14.0', 'ReactDOMServer.renderToString'];
-      deprecated[pragma + '.renderToStaticMarkup'] = ['0.14.0', 'ReactDOMServer.renderToStaticMarkup'];
+      deprecated[`${pragma}.render`] = ['0.14.0', 'ReactDOM.render'];
+      deprecated[`${pragma}.unmountComponentAtNode`] = ['0.14.0', 'ReactDOM.unmountComponentAtNode'];
+      deprecated[`${pragma}.findDOMNode`] = ['0.14.0', 'ReactDOM.findDOMNode'];
+      deprecated[`${pragma}.renderToString`] = ['0.14.0', 'ReactDOMServer.renderToString'];
+      deprecated[`${pragma}.renderToStaticMarkup`] = ['0.14.0', 'ReactDOMServer.renderToStaticMarkup'];
       // 15.0.0
-      deprecated[pragma + '.addons.LinkedStateMixin'] = ['15.0.0'];
+      deprecated[`${pragma}.addons.LinkedStateMixin`] = ['15.0.0'];
       deprecated['ReactPerf.printDOM'] = ['15.0.0', 'ReactPerf.printOperations'];
       deprecated['Perf.printDOM'] = ['15.0.0', 'Perf.printOperations'];
       deprecated['ReactPerf.getMeasurementsSummaryMap'] = ['15.0.0', 'ReactPerf.getWasted'];
       deprecated['Perf.getMeasurementsSummaryMap'] = ['15.0.0', 'Perf.getWasted'];
       // 15.5.0
-      deprecated[pragma + '.createClass'] = ['15.5.0', 'the npm module create-react-class'];
-      deprecated[pragma + '.PropTypes'] = ['15.5.0', 'the npm module prop-types'];
+      deprecated[`${pragma}.createClass`] = ['15.5.0', 'the npm module create-react-class'];
+      deprecated[`${pragma}.PropTypes`] = ['15.5.0', 'the npm module prop-types'];
 
       return deprecated;
     }
@@ -95,7 +94,7 @@ module.exports = {
         data: {
           oldMethod: method,
           version: deprecated[method][0],
-          newMethod: deprecated[method][1] ? ', use ' + deprecated[method][1] + ' instead' : ''
+          newMethod: deprecated[method][1] ? `, use ${deprecated[method][1]} instead` : ''
         }
       });
     }
@@ -109,7 +108,7 @@ module.exports = {
         if (!has(MODULES, module)) {
           continue;
         }
-        moduleName = find(MODULES[module], function(name) {
+        moduleName = MODULES[module].find(function(name) {
           return name === node.init.name;
         });
         if (moduleName) {
@@ -138,7 +137,7 @@ module.exports = {
           if (!specifier.imported) {
             return;
           }
-          checkDeprecation(node, MODULES[node.source.value][0] + '.' + specifier.imported.name);
+          checkDeprecation(node, `${MODULES[node.source.value][0]}.${specifier.imported.name}`);
         });
       },
 
@@ -158,7 +157,7 @@ module.exports = {
           return;
         }
         node.id.properties.forEach(function(property) {
-          checkDeprecation(node, (reactModuleName || pragma) + '.' + property.key.name);
+          checkDeprecation(node, `${reactModuleName || pragma}.${property.key.name}`);
         });
       },
 
diff --git a/lib/rules/no-render-return-value.js b/lib/rules/no-render-return-value.js
index de684d42cf..2bb69b1042 100644
--- a/lib/rules/no-render-return-value.js
+++ b/lib/rules/no-render-return-value.js
@@ -60,7 +60,7 @@ module.exports = {
         ) {
           context.report({
             node: callee,
-            message: 'Do not depend on the return value from ' + callee.object.name + '.render'
+            message: `Do not depend on the return value from ${callee.object.name}.render`
           });
         }
       }
diff --git a/lib/rules/no-unused-prop-types.js b/lib/rules/no-unused-prop-types.js
index e8c53456f7..e796632129 100644
--- a/lib/rules/no-unused-prop-types.js
+++ b/lib/rules/no-unused-prop-types.js
@@ -8,7 +8,6 @@
 // https://github.com/yannickcr/eslint-plugin-react/issues/7
 
 var has = require('has');
-var assign = require('object.assign');
 var Components = require('../util/Components');
 var variable = require('../util/variable');
 var annotations = require('../util/annotations');
@@ -53,7 +52,7 @@ module.exports = {
 
     var defaults = {skipShapeProps: true};
     var sourceCode = context.getSourceCode();
-    var configuration = assign({}, defaults, context.options[0] || {});
+    var configuration = Object.assign({}, defaults, context.options[0] || {});
     var skipShapeProps = configuration.skipShapeProps;
     var customValidators = configuration.customValidators || [];
     // Used to track the type annotations in scope.
@@ -613,7 +612,7 @@ module.exports = {
           }
           break;
         default:
-          throw new Error(node.type + ' ASTNodes are not handled by markPropTypesAsUsed');
+          throw new Error(`${node.type} ASTNodes are not handled by markPropTypesAsUsed`);
       }
 
       var component = components.get(utils.getParentComponent());
diff --git a/lib/rules/prop-types.js b/lib/rules/prop-types.js
index 201a334992..fe3a2ab2ff 100644
--- a/lib/rules/prop-types.js
+++ b/lib/rules/prop-types.js
@@ -604,7 +604,7 @@ module.exports = {
           }
           break;
         default:
-          throw new Error(node.type + ' ASTNodes are not handled by markPropTypesAsUsed');
+          throw new Error(`${node.type} ASTNodes are not handled by markPropTypesAsUsed`);
       }
 
       var component = components.get(utils.getParentComponent());
diff --git a/lib/rules/require-default-props.js b/lib/rules/require-default-props.js
index b1424de8f1..9462a10652 100644
--- a/lib/rules/require-default-props.js
+++ b/lib/rules/require-default-props.js
@@ -5,7 +5,6 @@
 'use strict';
 
 var has = require('has');
-var find = require('array.prototype.find');
 var Components = require('../util/Components');
 var variableUtil = require('../util/variable');
 var annotations = require('../util/annotations');
@@ -78,7 +77,7 @@ module.exports = {
      * @returns {ASTNode|null} Return null if the variable could not be found, ASTNode otherwise.
      */
     function findVariableByName(name) {
-      var variable = find(variableUtil.variablesInScope(context), function(item) {
+      var variable = variableUtil.variablesInScope(context).find(function(item) {
         return item.name === name;
       });
 
@@ -214,7 +213,7 @@ module.exports = {
      *                                     from this ObjectExpression can't be resolved.
      */
     function getDefaultPropsFromObjectExpression(objectExpression) {
-      var hasSpread = find(objectExpression.properties, function(property) {
+      var hasSpread = objectExpression.properties.find(function(property) {
         return property.type === 'ExperimentalSpreadProperty';
       });
 
diff --git a/lib/rules/require-extension.js b/lib/rules/require-extension.js
index 273d356363..7b1bb23280 100644
--- a/lib/rules/require-extension.js
+++ b/lib/rules/require-extension.js
@@ -89,7 +89,7 @@ module.exports = {
           if (!isPackage(id) && isForbiddenExtension(ext)) {
             context.report({
               node: node,
-              message: 'Unable to require module with extension \'' + ext + '\''
+              message: `Unable to require module with extension '${ext}'`
             });
           }
         }
diff --git a/lib/rules/sort-prop-types.js b/lib/rules/sort-prop-types.js
index 817e4123d7..791471c83e 100644
--- a/lib/rules/sort-prop-types.js
+++ b/lib/rules/sort-prop-types.js
@@ -3,8 +3,6 @@
  */
 'use strict';
 
-var find = require('array.prototype.find');
-
 var variableUtil = require('../util/variable');
 
 // ------------------------------------------------------------------------------
@@ -164,7 +162,7 @@ module.exports = {
             declarations = right.properties;
             break;
           case 'Identifier':
-            var variable = find(variableUtil.variablesInScope(context), function (item) {
+            var variable = variableUtil.variablesInScope(context).find(function (item) {
               return item.name === right.name;
             });
             if (
diff --git a/lib/rules/style-prop-object.js b/lib/rules/style-prop-object.js
index a3dc6212fb..1dad301562 100644
--- a/lib/rules/style-prop-object.js
+++ b/lib/rules/style-prop-object.js
@@ -4,7 +4,6 @@
  */
 'use strict';
 
-var find = require('array.prototype.find');
 var variableUtil = require('../util/variable');
 
 // ------------------------------------------------------------------------------
@@ -33,7 +32,7 @@ module.exports = {
      * @param {object} node A Identifier node
      */
     function checkIdentifiers(node) {
-      var variable = find(variableUtil.variablesInScope(context), function (item) {
+      var variable = variableUtil.variablesInScope(context).find(function (item) {
         return item.name === node.name;
       });
 
@@ -55,7 +54,7 @@ module.exports = {
           && node.arguments.length > 1
         ) {
           if (node.arguments[1].type === 'ObjectExpression') {
-            var style = find(node.arguments[1].properties, function(property) {
+            var style = node.arguments[1].properties.find(function(property) {
               return property.key && property.key.name === 'style' && !property.computed;
             });
             if (style) {
diff --git a/lib/rules/void-dom-elements-no-children.js b/lib/rules/void-dom-elements-no-children.js
index 17ac934a56..16db12f617 100644
--- a/lib/rules/void-dom-elements-no-children.js
+++ b/lib/rules/void-dom-elements-no-children.js
@@ -5,7 +5,6 @@
  */
 'use strict';
 
-var find = require('array.prototype.find');
 var has = require('has');
 
 var Components = require('../util/Components');
@@ -40,7 +39,7 @@ function isVoidDOMElement(elementName) {
 }
 
 function errorMessage(elementName) {
-  return 'Void DOM element <' + elementName + ' /> cannot receive children.';
+  return `Void DOM element <${elementName} /> cannot receive children.`;
 }
 
 // ------------------------------------------------------------------------------
@@ -77,7 +76,7 @@ module.exports = {
 
         var attributes = node.openingElement.attributes;
 
-        var hasChildrenAttributeOrDanger = !!find(attributes, function(attribute) {
+        var hasChildrenAttributeOrDanger = attributes.some(function(attribute) {
           if (!attribute.name) {
             return false;
           }
@@ -126,7 +125,7 @@ module.exports = {
 
         var props = args[1].properties;
 
-        var hasChildrenPropOrDanger = !!find(props, function(prop) {
+        var hasChildrenPropOrDanger = props.some(function(prop) {
           if (!prop.key) {
             return false;
           }
diff --git a/lib/util/Components.js b/lib/util/Components.js
index 688a87dfc8..55f49cfbf6 100644
--- a/lib/util/Components.js
+++ b/lib/util/Components.js
@@ -155,7 +155,7 @@ function componentRule(rule, context) {
       if (!node.parent) {
         return false;
       }
-      return new RegExp('^(' + pragma + '\\.)?' + createClass + '$').test(sourceCode.getText(node.parent.callee));
+      return new RegExp(`^(${pragma}\\.)?${createClass}$`).test(sourceCode.getText(node.parent.callee));
     },
 
     /**
@@ -172,7 +172,7 @@ function componentRule(rule, context) {
       if (!node.superClass) {
         return false;
       }
-      return new RegExp('^(' + pragma + '\\.)?(Pure)?Component$').test(sourceCode.getText(node.superClass));
+      return new RegExp(`^(${pragma}\\.)?(Pure)?Component$`).test(sourceCode.getText(node.superClass));
     },
 
     /**
@@ -208,7 +208,7 @@ function componentRule(rule, context) {
      */
     isPureComponent: function (node) {
       if (node.superClass) {
-        return new RegExp('^(' + pragma + '\\.)?PureComponent$').test(sourceCode.getText(node.superClass));
+        return new RegExp(`^(${pragma}\\.)?PureComponent$`).test(sourceCode.getText(node.superClass));
       }
       return false;
     },
diff --git a/lib/util/makeNoMethodSetStateRule.js b/lib/util/makeNoMethodSetStateRule.js
index dc4c2c191f..6ed876ebbf 100644
--- a/lib/util/makeNoMethodSetStateRule.js
+++ b/lib/util/makeNoMethodSetStateRule.js
@@ -12,7 +12,7 @@ function makeNoMethodSetStateRule(methodName) {
   return {
     meta: {
       docs: {
-        description: 'Prevent usage of setState in ' + methodName,
+        description: `Prevent usage of setState in ${methodName}`,
         category: 'Best Practices',
         recommended: false
       },
@@ -56,7 +56,7 @@ function makeNoMethodSetStateRule(methodName) {
             }
             context.report({
               node: callee,
-              message: 'Do not use setState in ' + methodName
+              message: `Do not use setState in ${methodName}`
             });
             break;
           }
diff --git a/lib/util/pragma.js b/lib/util/pragma.js
index 966c6d2e09..dc1798078a 100644
--- a/lib/util/pragma.js
+++ b/lib/util/pragma.js
@@ -16,7 +16,7 @@ function getCreateClassFromContext(context) {
     pragma = context.settings.react.createClass;
   }
   if (!JS_IDENTIFIER_REGEX.test(pragma)) {
-    throw new Error('createClass pragma ' + pragma + 'is not a valid function name');
+    throw new Error(`createClass pragma ${pragma} is not a valid function name`);
   }
   return pragma;
 }
@@ -28,7 +28,7 @@ function getFromContext(context) {
     pragma = context.settings.react.pragma;
   }
   if (!JS_IDENTIFIER_REGEX.test(pragma)) {
-    throw new Error('React pragma ' + pragma + 'is not a valid identifier');
+    throw new Error(`React pragma ${pragma} is not a valid identifier`);
   }
   return pragma;
 }
diff --git a/lib/util/variable.js b/lib/util/variable.js
index 26924489c1..6ec67c686e 100644
--- a/lib/util/variable.js
+++ b/lib/util/variable.js
@@ -4,8 +4,6 @@
  */
 'use strict';
 
-var find = require('array.prototype.find');
-
 /**
  * Search a particular variable in a list
  * @param {Array} variables The variables list.
@@ -25,7 +23,7 @@ function findVariable(variables, name) {
  * @returns {Object} Variable if the variable was found, null if not.
  */
 function getVariable(variables, name) {
-  return find(variables, function (variable) {
+  return variables.find(function (variable) {
     return variable.name === name;
   });
 }
diff --git a/lib/util/version.js b/lib/util/version.js
index 04737cf3dc..f173ed12e6 100644
--- a/lib/util/version.js
+++ b/lib/util/version.js
@@ -10,7 +10,7 @@ function getFromContext(context) {
   if (context.settings.react && context.settings.react.version) {
     confVer = context.settings.react.version;
   }
-  confVer = /^[0-9]+\.[0-9]+$/.test(confVer) ? confVer + '.0' : confVer;
+  confVer = /^[0-9]+\.[0-9]+$/.test(confVer) ? `${confVer}.0` : confVer;
   return confVer.split('.').map(function(part) {
     return Number(part);
   });
diff --git a/package.json b/package.json
index dacff25120..998dc14492 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,7 @@
     "coveralls": "cat ./reports/coverage/lcov.info | coveralls",
     "lint": "eslint ./",
     "test": "npm run lint && npm run unit-test",
-    "unit-test": "istanbul cover --dir reports/coverage node_modules/mocha/bin/_mocha tests/**/*.js -- --reporter dot --opts tests/mocha.opts"
+    "unit-test": "istanbul cover --dir reports/coverage node_modules/mocha/bin/_mocha tests/**/*.js -- --reporter dot"
   },
   "files": [
     "LICENSE",
@@ -25,22 +25,20 @@
   "dependencies": {
     "doctrine": "^2.0.0",
     "has": "^1.0.1",
-    "jsx-ast-utils": "^1.3.4",
-    "array.prototype.find": "^2.0.1",
-    "object.assign": "^4.0.4"
+    "jsx-ast-utils": "^1.3.4"
   },
   "devDependencies": {
     "babel-eslint": "7.1.1",
     "coveralls": "2.11.15",
-    "eslint": "^2.0.0 || ^3.0.0",
+    "eslint": "^3.0.0",
     "istanbul": "0.4.5",
     "mocha": "3.2.0"
   },
   "peerDependencies": {
-    "eslint": "^2.0.0 || ^3.0.0"
+    "eslint": "^3.0.0"
   },
   "engines": {
-    "node": ">=0.10"
+    "node": ">=4"
   },
   "keywords": [
     "eslint",
diff --git a/tests/eslint-compat.js b/tests/eslint-compat.js
deleted file mode 100644
index c488584dd6..0000000000
--- a/tests/eslint-compat.js
+++ /dev/null
@@ -1,12 +0,0 @@
-'use strict';
-
-var isEslint2 = require('eslint/package.json').version.slice(0, 2) === '2.';
-
-module.exports = {
-  isEslint2: function () {
-    return isEslint2;
-  },
-  dot: function dot(msg) {
-    return isEslint2 ? msg : msg + '.';
-  }
-};
diff --git a/tests/index.js b/tests/index.js
index 8e058037d2..12411e6d15 100644
--- a/tests/index.js
+++ b/tests/index.js
@@ -14,7 +14,7 @@ var ruleFiles = fs.readdirSync(path.resolve(__dirname, '../lib/rules/'))
 
 describe('all rule files should be exported by the plugin', function() {
   ruleFiles.forEach(function(ruleName) {
-    it('should export ' + ruleName, function() {
+    it(`should export ${ruleName}`, function() {
       assert.equal(
         plugin.rules[ruleName],
         require(path.join('../lib/rules', ruleName))
@@ -29,9 +29,9 @@ describe('deprecated rules', function() {
       var inDeprecatedRules = Boolean(plugin.deprecatedRules[ruleName]);
       var isDeprecated = plugin.rules[ruleName].meta.deprecated;
       if (inDeprecatedRules) {
-        assert(isDeprecated, ruleName + ' metadata should mark it as deprecated');
+        assert(isDeprecated, `${ruleName} metadata should mark it as deprecated`);
       } else {
-        assert(!isDeprecated, ruleName + ' metadata should not mark it as deprecated');
+        assert(!isDeprecated, `${ruleName} metadata should not mark it as deprecated`);
       }
     });
   });
@@ -47,12 +47,12 @@ describe('configurations', function() {
     });
 
     ruleFiles.forEach(function(ruleName) {
-      var inRecommendedConfig = Boolean(plugin.configs.recommended.rules['react/' + ruleName]);
+      var inRecommendedConfig = Boolean(plugin.configs.recommended.rules[`react/${ruleName}`]);
       var isRecommended = plugin.rules[ruleName].meta.docs.recommended;
       if (inRecommendedConfig) {
-        assert(isRecommended, ruleName + ' metadata should mark it as recommended');
+        assert(isRecommended, `${ruleName} metadata should mark it as recommended`);
       } else {
-        assert(!isRecommended, ruleName + ' metadata should not mark it as recommended');
+        assert(!isRecommended, `${ruleName} metadata should not mark it as recommended`);
       }
     });
   });
@@ -64,7 +64,7 @@ describe('configurations', function() {
     });
     ruleFiles.forEach(function(ruleName) {
       var inDeprecatedRules = Boolean(plugin.deprecatedRules[ruleName]);
-      var inAllConfig = Boolean(plugin.configs.all.rules['react/' + ruleName]);
+      var inAllConfig = Boolean(plugin.configs.all.rules[`react/${ruleName}`]);
       assert(inDeprecatedRules ^ inAllConfig);
     });
   });
diff --git a/tests/lib/rules/jsx-closing-bracket-location.js b/tests/lib/rules/jsx-closing-bracket-location.js
index 7571a1e580..0699da3184 100644
--- a/tests/lib/rules/jsx-closing-bracket-location.js
+++ b/tests/lib/rules/jsx-closing-bracket-location.js
@@ -26,8 +26,7 @@ var MESSAGE_TAG_ALIGNED = 'The closing bracket must be aligned with the opening
 var MESSAGE_LINE_ALIGNED = 'The closing bracket must be aligned with the line containing the opening tag';
 
 var messageWithDetails = function(message, expectedColumn, expectedNextLine) {
-  var details = ' (expected column ' + expectedColumn +
-    (expectedNextLine ? ' on the next line)' : ')');
+  var details = ` (expected column ${expectedColumn}${expectedNextLine ? ' on the next line)' : ')'}`;
   return message + details;
 };
 
diff --git a/tests/lib/rules/jsx-uses-react.js b/tests/lib/rules/jsx-uses-react.js
index 773bb870e7..b14058b776 100644
--- a/tests/lib/rules/jsx-uses-react.js
+++ b/tests/lib/rules/jsx-uses-react.js
@@ -12,7 +12,6 @@
 var eslint = require('eslint').linter;
 var rule = require('eslint/lib/rules/no-unused-vars');
 var RuleTester = require('eslint').RuleTester;
-var dot = require('../../eslint-compat').dot;
 
 var parserOptions = {
   ecmaVersion: 6,
@@ -42,12 +41,12 @@ ruleTester.run('no-unused-vars', rule, {
   ],
   invalid: [{
     code: '/*eslint jsx-uses-react:1*/ var React;',
-    errors: [{message: dot('\'React\' is defined but never used')}], parserOptions: parserOptions
+    errors: [{message: '\'React\' is defined but never used.'}], parserOptions: parserOptions
   }, {
     code: '/*eslint jsx-uses-react:1*/ /** @jsx Foo */ var React; <div />;',
-    errors: [{message: dot('\'React\' is defined but never used')}], parserOptions: parserOptions
+    errors: [{message: '\'React\' is defined but never used.'}], parserOptions: parserOptions
   }, {
     code: '/*eslint jsx-uses-react:1*/ var React; <div />;',
-    errors: [{message: dot('\'React\' is defined but never used')}], settings: settings, parserOptions: parserOptions
+    errors: [{message: '\'React\' is defined but never used.'}], settings: settings, parserOptions: parserOptions
   }]
 });
diff --git a/tests/lib/rules/jsx-uses-vars.js b/tests/lib/rules/jsx-uses-vars.js
index ad678d81a9..57e1bee67c 100644
--- a/tests/lib/rules/jsx-uses-vars.js
+++ b/tests/lib/rules/jsx-uses-vars.js
@@ -13,8 +13,6 @@ var eslint = require('eslint').linter;
 var ruleNoUnusedVars = require('eslint/lib/rules/no-unused-vars');
 var rulePreferConst = require('eslint/lib/rules/prefer-const');
 var RuleTester = require('eslint').RuleTester;
-var dot = require('../../eslint-compat').dot;
-var isEslint2 = require('../../eslint-compat').isEslint2;
 
 var parserOptions = {
   ecmaVersion: 6,
@@ -34,170 +32,188 @@ eslint.defineRule('jsx-uses-vars', require('../../../lib/rules/jsx-uses-vars'));
 ruleTester.run('no-unused-vars', ruleNoUnusedVars, {
   valid: [
     {
-      code: '\
-        /*eslint jsx-uses-vars:1*/\
-        function foo() {\
-          var App;\
-          var bar = React.render(<App/>);\
-          return bar;\
-        };\
-        foo()',
-      parserOptions: parserOptions
-    }, {
-      code: '\
-        /*eslint jsx-uses-vars:1*/\
-        var App;\
-        React.render(<App/>);',
-      parserOptions: parserOptions
-    }, {
-      code: '\
-        /*eslint jsx-uses-vars:1*/\
-        var App;\
-        React.render(<App/>);',
+      code: `
+        /* eslint jsx-uses-vars: 1 */
+        function foo() {
+          var App;
+          var bar = React.render(<App/>);
+          return bar;
+        };
+        foo()
+      `,
+      parserOptions: parserOptions
+    }, {
+      code: `
+        /* eslint jsx-uses-vars: 1 */
+        var App;
+        React.render(<App/>);
+      `,
+      parserOptions: parserOptions
+    }, {
+      code: `
+        /* eslint jsx-uses-vars: 1 */
+        var App;
+        React.render(<App/>);
+      `,
       parser: 'babel-eslint',
       parserOptions: parserOptions
     }, {
-      code: '\
-        /*eslint jsx-uses-vars:1*/\
-          var a=1;\
-          React.render(<img src={a} />);',
-      parserOptions: parserOptions
-    }, {
-      code: '\
-        /*eslint jsx-uses-vars:1*/\
-        var App;\
-        function f() {\
-          return <App />;\
-        }\
-        f();',
-      parserOptions: parserOptions
-    }, {
-      code: '\
-        /*eslint jsx-uses-vars:1*/\
-        var App;\
-        <App.Hello />',
-      parserOptions: parserOptions
-    }, {
-      code: '\
-        /*eslint jsx-uses-vars:1*/\
-        var App;\
-        <App:Hello />',
-      parserOptions: parserOptions
-    }, {
-      code: '\
-        /*eslint jsx-uses-vars:1*/\
-        class HelloMessage {}\
-        <HelloMessage />',
-      parserOptions: parserOptions
-    }, {
-      code: '\
-        /*eslint jsx-uses-vars:1*/\
-        class HelloMessage {\
-          render() {\
-            var HelloMessage = <div>Hello</div>;\
-            return HelloMessage;\
-          }\
-        }\
-        <HelloMessage />',
-      parserOptions: parserOptions
-    }, {
-      code: '\
-        /*eslint jsx-uses-vars:1*/\
-        function foo() {\
-          var App = { Foo: { Bar: {}}};\
-          var bar = React.render(<App.Foo.Bar/>);\
-          return bar;\
-        };\
-        foo()',
-      parserOptions: parserOptions
-    }, {
-      code: '\
-        /*eslint jsx-uses-vars:1*/\
-        function foo() {\
-          var App = { Foo: { Bar: { Baz: {}}}};\
-          var bar = React.render(<App.Foo.Bar.Baz/>);\
-          return bar;\
-        };\
-        foo()',
+      code: `
+        /* eslint jsx-uses-vars: 1 */
+        var a = 1;
+        React.render(<img src={a} />);
+      `,
+      parserOptions: parserOptions
+    }, {
+      code: `
+        /* eslint jsx-uses-vars: 1 */
+        var App;
+        function f() {
+          return <App />;
+        }
+        f();
+      `,
+      parserOptions: parserOptions
+    }, {
+      code: `
+        /* eslint jsx-uses-vars: 1 */
+        var App;
+        <App.Hello />
+      `,
+      parserOptions: parserOptions
+    }, {
+      code: `
+        /* eslint jsx-uses-vars: 1 */
+        var App;
+        <App:Hello />
+      `,
+      parserOptions: parserOptions
+    }, {
+      code: `
+        /* eslint jsx-uses-vars: 1 */
+        class HelloMessage {}
+        <HelloMessage />
+      `,
+      parserOptions: parserOptions
+    }, {
+      code: `
+        /* eslint jsx-uses-vars: 1 */
+        class HelloMessage {
+          render() {
+            var HelloMessage = <div>Hello</div>;
+            return HelloMessage;
+          }
+        }
+        <HelloMessage />
+      `,
+      parserOptions: parserOptions
+    }, {
+      code: `
+        /* eslint jsx-uses-vars: 1 */
+        function foo() {
+          var App = { Foo: { Bar: {} } };
+          var bar = React.render(<App.Foo.Bar/>);
+          return bar;
+        };
+        foo()
+      `,
+      parserOptions: parserOptions
+    }, {
+      code: `
+        /* eslint jsx-uses-vars: 1 */
+        function foo() {
+          var App = { Foo: { Bar: { Baz: {} } } };
+          var bar = React.render(<App.Foo.Bar.Baz/>);
+          return bar;
+        };
+        foo()
+      `,
       parserOptions: parserOptions
     }
   ],
   invalid: [
     {
-      code: '/*eslint jsx-uses-vars:1*/ var App;',
-      errors: [{message: dot('\'App\' is defined but never used')}],
-      parserOptions: parserOptions
-    }, {
-      code: '\
-        /*eslint jsx-uses-vars:1*/\
-        var App;\
-        var unused;\
-        React.render(<App unused=""/>);',
-      errors: [{message: dot('\'unused\' is defined but never used')}],
-      parserOptions: parserOptions
-    }, {
-      code: '\
-        /*eslint jsx-uses-vars:1*/\
-        var App;\
-        var Hello;\
-        React.render(<App:Hello/>);',
-      errors: [{message: dot('\'Hello\' is defined but never used')}],
-      parserOptions: parserOptions
-    }, {
-      code: '\
-        /*eslint jsx-uses-vars:1*/\
-        var Button;\
-        var Input;\
-        React.render(<Button.Input unused=""/>);',
-      errors: [{message: dot('\'Input\' is defined but never used')}],
-      parserOptions: parserOptions
-    }, {
-      code: '\
-        /*eslint jsx-uses-vars:1*/\
-        class unused {}',
-      errors: [{message: dot('\'unused\' is defined but never used')}],
-      parserOptions: parserOptions
-    }, {
-      code: '\
-        /*eslint jsx-uses-vars:1*/\
-        class HelloMessage {\
-          render() {\
-            var HelloMessage = <div>Hello</div>;\
-            return HelloMessage;\
-          }\
-        }',
+      code: '/* eslint jsx-uses-vars: 1 */ var App;',
+      errors: [{message: '\'App\' is defined but never used.'}],
+      parserOptions: parserOptions
+    }, {
+      code: `
+        /* eslint jsx-uses-vars: 1 */
+        var App;
+        var unused;
+        React.render(<App unused=""/>);
+      `,
+      errors: [{message: '\'unused\' is defined but never used.'}],
+      parserOptions: parserOptions
+    }, {
+      code: `
+        /* eslint jsx-uses-vars: 1 */
+        var App;
+        var Hello;
+        React.render(<App:Hello/>);
+      `,
+      errors: [{message: '\'Hello\' is defined but never used.'}],
+      parserOptions: parserOptions
+    }, {
+      code: `
+        /* eslint jsx-uses-vars: 1 */
+        var Button;
+        var Input;
+        React.render(<Button.Input unused=""/>);
+      `,
+      errors: [{message: '\'Input\' is defined but never used.'}],
+      parserOptions: parserOptions
+    }, {
+      code: `
+        /* eslint jsx-uses-vars: 1 */
+        class unused {}
+      `,
+      errors: [{message: '\'unused\' is defined but never used.'}],
+      parserOptions: parserOptions
+    }, {
+      code: `
+        /* eslint jsx-uses-vars: 1 */
+        class HelloMessage {
+          render() {
+            var HelloMessage = <div>Hello</div>;
+            return HelloMessage;
+          }
+        }
+      `,
       errors: [{
-        message: dot('\'HelloMessage\' is defined but never used'),
-        line: 1
+        message: '\'HelloMessage\' is defined but never used.',
+        line: 3
       }],
       parserOptions: parserOptions
     }, {
-      code: '\
-        /*eslint jsx-uses-vars:1*/\
-        class HelloMessage {\
-          render() {\
-            var HelloMessage = <div>Hello</div>;\
-            return HelloMessage;\
-          }\
-        }',
+      code: `
+        /* eslint jsx-uses-vars: 1 */
+        class HelloMessage {
+          render() {
+            var HelloMessage = <div>Hello</div>;
+            return HelloMessage;
+          }
+        }
+      `,
       errors: [{
-        message: dot('\'HelloMessage\' is defined but never used'),
-        line: 1
+        message: '\'HelloMessage\' is defined but never used.',
+        line: 3
       }],
       parser: 'babel-eslint',
       parserOptions: parserOptions
     }, {
-      code: '\
-        /*eslint jsx-uses-vars:1*/\
-        import {Hello} from \'Hello\';\
-        function Greetings() {\
-          const Hello = require(\'Hello\').default;\
-          return <Hello />;\
-        }\
-        Greetings();',
+      code: `
+        /* eslint jsx-uses-vars: 1 */
+        import {Hello} from 'Hello';
+        function Greetings() {
+          const Hello = require('Hello').default;
+          return <Hello />;
+        }
+        Greetings();
+      `,
       errors: [{
-        message: dot('\'Hello\' is defined but never used'),
-        line: 1
+        message: '\'Hello\' is defined but never used.',
+        line: 3
       }],
       parser: 'babel-eslint',
       parserOptions: parserOptions
@@ -208,21 +224,21 @@ ruleTester.run('no-unused-vars', ruleNoUnusedVars, {
 // Check compatibility with eslint prefer-const rule (#716)
 ruleTester.run('prefer-const', rulePreferConst, {
   valid: [],
-  invalid: (isEslint2() ? [] : [{
+  invalid: [{
     code: [
       '/* eslint jsx-uses-vars:1 */',
       'let App = <div />;',
       '<App />;'
     ].join('\n'),
-    errors: [{message: dot('\'App\' is never reassigned. Use \'const\' instead')}],
+    errors: [{message: '\'App\' is never reassigned. Use \'const\' instead.'}],
     parserOptions: parserOptions
-  }]).concat([{
+  }, {
     code: [
       '/* eslint jsx-uses-vars:1 */',
       'let filters = \'foo\';',
       '<div>{filters}</div>;'
     ].join('\n'),
-    errors: [{message: '\'filters\' is never reassigned' + (isEslint2() ? ', use' : '. Use') + ' \'const\' instead.'}],
+    errors: [{message: '\'filters\' is never reassigned. Use \'const\' instead.'}],
     parserOptions: parserOptions
-  }])
+  }]
 });
diff --git a/tests/lib/rules/jsx-wrap-multilines.js b/tests/lib/rules/jsx-wrap-multilines.js
index 12677a374a..b64dfda6e8 100644
--- a/tests/lib/rules/jsx-wrap-multilines.js
+++ b/tests/lib/rules/jsx-wrap-multilines.js
@@ -22,90 +22,101 @@ var parserOptions = {
 // Code Snippets
 // ------------------------------------------------------------------------------
 
-var RETURN_SINGLE_LINE = '\
-  var Hello = createReactClass({\
-    render: function() {\
-      return <p>Hello {this.props.name}</p>;\
-    }\
-  });';
-
-var RETURN_PAREN = '\
-  var Hello = createReactClass({\
-    render: function() {\
-      return (<div>\n\
-        <p>Hello {this.props.name}</p>\n\
-      </div>);\
-    }\
-  });';
-
-var RETURN_NO_PAREN = '\
-  var Hello = createReactClass({\
-    render: function() {\
-      return <div>\n\
-        <p>Hello {this.props.name}</p>\n\
-      </div>;\
-    }\
-  });';
+var RETURN_SINGLE_LINE = `
+  var Hello = createReactClass({
+    render: function() {
+      return <p>Hello {this.props.name}</p>;
+    }
+  });
+`;
+
+var RETURN_PAREN = `
+  var Hello = createReactClass({
+    render: function() {
+      return (<div>
+        <p>Hello {this.props.name}</p>
+      </div>);
+    }
+  });
+`;
+
+var RETURN_NO_PAREN = `
+  var Hello = createReactClass({
+    render: function() {
+      return <div>
+        <p>Hello {this.props.name}</p>
+      </div>;
+    }
+  });
+`;
 
 var DECLARATION_TERNARY_SINGLE_LINE = 'var hello = foo ? <p>Hello</p> : <p>Hi</p>;';
 
-var DECLARATION_TERNARY_PAREN = '\
-  var hello = foo ? (<div>\n\
-    <p>Hello</p>\n\
-  </div>) : (<div>\n\
-    <p>Hi</p>\n\
-  </div>);';
-
-var DECLARATION_TERNARY_NO_PAREN = '\
-  var hello = foo ? <div>\n\
-    <p>Hello</p>\n\
-  </div> : <div>\n\
-    <p>Hi</p>\n\
-  </div>;';
+var DECLARATION_TERNARY_PAREN = `
+  var hello = foo ? (<div>
+    <p>Hello</p>
+  </div>) : (<div>
+    <p>Hi</p>
+  </div>);
+`;
+
+var DECLARATION_TERNARY_NO_PAREN = `
+  var hello = foo ? <div>
+    <p>Hello</p>
+  </div> : <div>
+    <p>Hi</p>
+  </div>;
+`;
 
 var ASSIGNMENT_TERNARY_SINGLE_LINE = 'var hello; hello = foo ? <p>Hello</p> : <p>Hi</p>;';
 
-var ASSIGNMENT_TERNARY_PAREN = '\
-  var hello;\n\
-  hello = foo ? (<div>\n\
-    <p>Hello</p>\n\
-  </div>) : (<div>\n\
-    <p>Hi</p>\n\
-  </div>);';
-
-var ASSIGNMENT_TERNARY_NO_PAREN = '\
-  var hello;\n\
-  hello = foo ? <div>\n\
-    <p>Hello</p>\n\
-  </div> : <div>\n\
-    <p>Hi</p>\n\
-  </div>;';
+var ASSIGNMENT_TERNARY_PAREN = `
+  var hello;
+  hello = foo ? (<div>
+    <p>Hello</p>
+  </div>) : (<div>
+    <p>Hi</p>
+  </div>);
+`;
+
+var ASSIGNMENT_TERNARY_NO_PAREN = `
+  var hello;
+  hello = foo ? <div>
+    <p>Hello</p>
+  </div> : <div>
+    <p>Hi</p>
+  </div>;
+`;
 
 var DECLARATION_SINGLE_LINE = 'var hello = <p>Hello</p>;';
 
-var DECLARATION_PAREN = '\
-  var hello = (<div>\n\
-    <p>Hello</p>\n\
-  </div>);';
+var DECLARATION_PAREN = `
+  var hello = (<div>
+    <p>Hello</p>
+  </div>);
+`;
 
-var DECLARATION_NO_PAREN = '\
-  var hello = <div>\n\
-    <p>Hello</p>\n\
-  </div>;';
+var DECLARATION_NO_PAREN = `
+  var hello = <div>
+    <p>Hello</p>
+  </div>;
+`;
 
 var ASSIGNMENT_SINGLE_LINE = 'var hello; hello = <p>Hello</p>;';
 
-var ASSIGNMENT_PAREN = '\
-  var hello;\
-  hello = (<div>\n\
-    <p>Hello</p>\n\
-  </div>);';
-
-var ASSIGNMENT_NO_PAREN = '\
-  var hello;\
-  hello = <div>\n\
-    <p>Hello</p>\n\
-  </div>;';
+var ASSIGNMENT_PAREN = `
+  var hello;
+  hello = (<div>
+    <p>Hello</p>
+  </div>);
+`;
+
+var ASSIGNMENT_NO_PAREN = `
+  var hello;
+  hello = <div>
+    <p>Hello</p>
+  </div>;
+`;
 
 // ------------------------------------------------------------------------------
 // Tests
diff --git a/tests/lib/rules/no-children-prop.js b/tests/lib/rules/no-children-prop.js
index dbcb684d34..8232452a4d 100644
--- a/tests/lib/rules/no-children-prop.js
+++ b/tests/lib/rules/no-children-prop.js
@@ -20,10 +20,8 @@ var parserOptions = {
   }
 };
 
-var JSX_ERROR = 'Do not pass children as props. Instead, nest children between \
-the opening and closing tags.';
-var CREATE_ELEMENT_ERROR = 'Do not pass children as props. Instead, pass them \
-as additional arguments to React.createElement.';
+var JSX_ERROR = 'Do not pass children as props. Instead, nest children between the opening and closing tags.';
+var CREATE_ELEMENT_ERROR = 'Do not pass children as props. Instead, pass them as additional arguments to React.createElement.';
 
 // -----------------------------------------------------------------------------
 // Tests
diff --git a/tests/lib/rules/no-multi-comp.js b/tests/lib/rules/no-multi-comp.js
index a6bdcd69d6..fffc443833 100644
--- a/tests/lib/rules/no-multi-comp.js
+++ b/tests/lib/rules/no-multi-comp.js
@@ -10,7 +10,6 @@
 
 var rule = require('../../../lib/rules/no-multi-comp');
 var RuleTester = require('eslint').RuleTester;
-var assign = require('object.assign');
 
 var parserOptions = {
   ecmaVersion: 6,
@@ -104,7 +103,7 @@ ruleTester.run('no-multi-comp', rule, {
       '  return createElement("img");',
       '};'
     ].join('\n'),
-    parserOptions: assign({sourceType: 'module'}, parserOptions)
+    parserOptions: Object.assign({sourceType: 'module'}, parserOptions)
   }],
 
   invalid: [{
diff --git a/tests/lib/rules/require-default-props.js b/tests/lib/rules/require-default-props.js
index 938fae0068..44d397c43f 100644
--- a/tests/lib/rules/require-default-props.js
+++ b/tests/lib/rules/require-default-props.js
@@ -10,7 +10,6 @@
 
 var rule = require('../../../lib/rules/require-default-props');
 var RuleTester = require('eslint').RuleTester;
-var assign = require('object.assign');
 
 require('babel-eslint');
 
@@ -410,7 +409,7 @@ ruleTester.run('require-default-props', rule, {
         '  return <div>{foo}{bar}</div>;',
         '}'
       ].join('\n'),
-      parserOptions: assign({sourceType: 'module'}, parserOptions)
+      parserOptions: Object.assign({sourceType: 'module'}, parserOptions)
     },
     {
       code: [
@@ -425,7 +424,7 @@ ruleTester.run('require-default-props', rule, {
         '  return <div>{foo}{bar}</div>;',
         '}'
       ].join('\n'),
-      parserOptions: assign({sourceType: 'module'}, parserOptions)
+      parserOptions: Object.assign({sourceType: 'module'}, parserOptions)
     },
     // using spread operator
     {
diff --git a/tests/lib/rules/self-closing-comp.js b/tests/lib/rules/self-closing-comp.js
index 5cb9202e58..13a091ce85 100644
--- a/tests/lib/rules/self-closing-comp.js
+++ b/tests/lib/rules/self-closing-comp.js
@@ -33,10 +33,11 @@ ruleTester.run('self-closing-comp', rule, {
       code: 'var Profile = <Hello name="John"><img src="picture.png" /></Hello>;',
       parserOptions: parserOptions
     }, {
-      code: '\
-      <Hello>\
-        <Hello name="John" />\
-      </Hello>',
+      code: `
+        <Hello>
+          <Hello name="John" />
+        </Hello>
+      `,
       parserOptions: parserOptions
     }, {
       code: 'var HelloJohn = <div>&nbsp;</div>;',
@@ -56,10 +57,11 @@ ruleTester.run('self-closing-comp', rule, {
       options: [],
       parserOptions: parserOptions
     }, {
-      code: '\
-      <Hello>\
-        <Hello name="John" />\
-      </Hello>',
+      code: `
+        <Hello>
+          <Hello name="John" />
+        </Hello>
+      `,
       options: [],
       parserOptions: parserOptions
     }, {
@@ -95,10 +97,11 @@ ruleTester.run('self-closing-comp', rule, {
       options: [{html: true}],
       parserOptions: parserOptions
     }, {
-      code: '\
-      <div>\
-        <div className="content" />\
-      </div>',
+      code: `
+        <div>
+          <div className="content" />
+        </div>
+      `,
       options: [{html: true}],
       parserOptions: parserOptions
     }
diff --git a/tests/lib/rules/style-prop-object.js b/tests/lib/rules/style-prop-object.js
index 7dafefd1d0..7c7346c76a 100644
--- a/tests/lib/rules/style-prop-object.js
+++ b/tests/lib/rules/style-prop-object.js
@@ -10,7 +10,6 @@
 
 var rule = require('../../../lib/rules/style-prop-object');
 var RuleTester = require('eslint').RuleTester;
-var assign = require('object.assign');
 
 var parserOptions = {
   ecmaVersion: 6,
@@ -77,7 +76,7 @@ ruleTester.run('style-prop-object', rule, {
         '  return <div style={styles} />;',
         '}'
       ].join('\n'),
-      parserOptions: assign({sourceType: 'module'}, parserOptions)
+      parserOptions: Object.assign({sourceType: 'module'}, parserOptions)
     },
     {
       code: [
@@ -87,7 +86,7 @@ ruleTester.run('style-prop-object', rule, {
         '  return <div style={styles} />;',
         '}'
       ].join('\n'),
-      parserOptions: assign({sourceType: 'module'}, parserOptions)
+      parserOptions: Object.assign({sourceType: 'module'}, parserOptions)
     },
     {
       code: [
@@ -102,7 +101,7 @@ ruleTester.run('style-prop-object', rule, {
         'const styles = Object.assign({ color: \'red\' }, mystyles);',
         'React.createElement("div", { style: styles });'
       ].join('\n'),
-      parserOptions: assign({sourceType: 'module'}, parserOptions)
+      parserOptions: Object.assign({sourceType: 'module'}, parserOptions)
     },
     {
       code: '<div style></div>',
diff --git a/tests/lib/rules/void-dom-elements-no-children.js b/tests/lib/rules/void-dom-elements-no-children.js
index 97352b5f6c..112cbf21a9 100644
--- a/tests/lib/rules/void-dom-elements-no-children.js
+++ b/tests/lib/rules/void-dom-elements-no-children.js
@@ -21,7 +21,7 @@ var parserOptions = {
 };
 
 function errorMessage(elementName) {
-  return 'Void DOM element <' + elementName + ' /> cannot receive children.';
+  return `Void DOM element <${elementName} /> cannot receive children.`;
 }
 
 // -----------------------------------------------------------------------------
diff --git a/tests/lib/rules/wrap-multilines.js b/tests/lib/rules/wrap-multilines.js
index 7384f6ac7d..11fb78b474 100644
--- a/tests/lib/rules/wrap-multilines.js
+++ b/tests/lib/rules/wrap-multilines.js
@@ -22,56 +22,63 @@ var parserOptions = {
 // Code Snippets
 // ------------------------------------------------------------------------------
 
-var RETURN_SINGLE_LINE = '\
-  var Hello = createReactClass({\
-    render: function() {\
-      return <p>Hello {this.props.name}</p>;\
-    }\
-  });';
-
-var RETURN_PAREN = '\
-  var Hello = createReactClass({\
-    render: function() {\
-      return (<div>\n\
-        <p>Hello {this.props.name}</p>\n\
-      </div>);\
-    }\
-  });';
-
-var RETURN_NO_PAREN = '\
-  var Hello = createReactClass({\
-    render: function() {\
-      return <div>\n\
-        <p>Hello {this.props.name}</p>\n\
-      </div>;\
-    }\
-  });';
+var RETURN_SINGLE_LINE = `
+  var Hello = createReactClass({
+    render: function() {
+      return <p>Hello {this.props.name}</p>;
+    }
+  });
+`;
+
+var RETURN_PAREN = `
+  var Hello = createReactClass({
+    render: function() {
+      return (<div>
+        <p>Hello {this.props.name}</p>
+      </div>);
+    }
+  });
+`;
+
+var RETURN_NO_PAREN = `
+  var Hello = createReactClass({
+    render: function() {
+      return <div>
+        <p>Hello {this.props.name}</p>
+      </div>;
+    }
+  });
+`;
 
 var DECLARATION_SINGLE_LINE = 'var hello = <p>Hello</p>;';
 
-var DECLARATION_PAREN = '\
-  var hello = (<div>\n\
-    <p>Hello</p>\n\
-  </div>);';
+var DECLARATION_PAREN = `
+  var hello = (<div>
+    <p>Hello</p>
+  </div>);
+`;
 
-var DECLARATION_NO_PAREN = '\
-  var hello = <div>\n\
-    <p>Hello</p>\n\
-  </div>;';
+var DECLARATION_NO_PAREN = `
+  var hello = <div>
+    <p>Hello</p>
+  </div>;
+`;
 
 var ASSIGNMENT_SINGLE_LINE = 'var hello; hello = <p>Hello</p>;';
 
-var ASSIGNMENT_PAREN = '\
-  var hello;\
-  hello = (<div>\n\
-    <p>Hello</p>\n\
-  </div>);';
-
-var ASSIGNMENT_NO_PAREN = '\
-  var hello;\
-  hello = <div>\n\
-    <p>Hello</p>\n\
-  </div>;';
+var ASSIGNMENT_PAREN = `
+  var hello;
+  hello = (<div>
+    <p>Hello</p>
+  </div>);
+`;
+
+var ASSIGNMENT_NO_PAREN = `
+  var hello;
+  hello = <div>
+    <p>Hello</p>
+  </div>;
+`;
 
 // ------------------------------------------------------------------------------
 // Tests
diff --git a/tests/mocha.opts b/tests/mocha.opts
deleted file mode 100644
index 5232e1ad1d..0000000000
--- a/tests/mocha.opts
+++ /dev/null
@@ -1 +0,0 @@
---require ./tests/setup
diff --git a/tests/setup.js b/tests/setup.js
deleted file mode 100644
index e0526921a7..0000000000
--- a/tests/setup.js
+++ /dev/null
@@ -1,3 +0,0 @@
-'use strict';
-
-require('object.assign/shim')();