diff --git a/.eslintrc b/.eslintrc
index 03c2f178f9..b3af93dd31 100644
--- a/.eslintrc
+++ b/.eslintrc
@@ -30,9 +30,11 @@
         "prefer-object-spread": 0, // until node 8 is required
         "prefer-rest-params": 0, // until node 6 is required
         "prefer-spread": 0, // until node 6 is required
+        "function-call-argument-newline": 1, // TODO: enable
         "function-paren-newline": 0,
         "no-plusplus": 1,
         "no-param-reassign": 1,
+        "no-unreachable-loop": 1, // TODO: enable
         "no-restricted-syntax": [2, {
             "selector": "ObjectPattern",
             "message": "Object destructuring is not compatible with Node v4"
diff --git a/lib/rules/jsx-equals-spacing.js b/lib/rules/jsx-equals-spacing.js
index 0ec17d06b4..41d123152e 100644
--- a/lib/rules/jsx-equals-spacing.js
+++ b/lib/rules/jsx-equals-spacing.js
@@ -37,7 +37,7 @@ module.exports = {
   },
 
   create(context) {
-    const config = context.options[0];
+    const config = context.options[0] || 'never';
 
     /**
      * Determines a given attribute node has an equal sign.
@@ -64,48 +64,44 @@ module.exports = {
           const spacedBefore = sourceCode.isSpaceBetweenTokens(attrNode.name, equalToken);
           const spacedAfter = sourceCode.isSpaceBetweenTokens(equalToken, attrNode.value);
 
-          switch (config) {
-            default:
-            case 'never':
-              if (spacedBefore) {
-                report(context, messages.noSpaceBefore, 'noSpaceBefore', {
-                  node: attrNode,
-                  loc: equalToken.loc.start,
-                  fix(fixer) {
-                    return fixer.removeRange([attrNode.name.range[1], equalToken.range[0]]);
-                  },
-                });
-              }
-              if (spacedAfter) {
-                report(context, messages.noSpaceAfter, 'noSpaceAfter', {
-                  node: attrNode,
-                  loc: equalToken.loc.start,
-                  fix(fixer) {
-                    return fixer.removeRange([equalToken.range[1], attrNode.value.range[0]]);
-                  },
-                });
-              }
-              break;
-            case 'always':
-              if (!spacedBefore) {
-                report(context, messages.needSpaceBefore, 'needSpaceBefore', {
-                  node: attrNode,
-                  loc: equalToken.loc.start,
-                  fix(fixer) {
-                    return fixer.insertTextBefore(equalToken, ' ');
-                  },
-                });
-              }
-              if (!spacedAfter) {
-                report(context, messages.needSpaceAfter, 'needSpaceAfter', {
-                  node: attrNode,
-                  loc: equalToken.loc.start,
-                  fix(fixer) {
-                    return fixer.insertTextAfter(equalToken, ' ');
-                  },
-                });
-              }
-              break;
+          if (config === 'never') {
+            if (spacedBefore) {
+              report(context, messages.noSpaceBefore, 'noSpaceBefore', {
+                node: attrNode,
+                loc: equalToken.loc.start,
+                fix(fixer) {
+                  return fixer.removeRange([attrNode.name.range[1], equalToken.range[0]]);
+                },
+              });
+            }
+            if (spacedAfter) {
+              report(context, messages.noSpaceAfter, 'noSpaceAfter', {
+                node: attrNode,
+                loc: equalToken.loc.start,
+                fix(fixer) {
+                  return fixer.removeRange([equalToken.range[1], attrNode.value.range[0]]);
+                },
+              });
+            }
+          } else if (config === 'always') {
+            if (!spacedBefore) {
+              report(context, messages.needSpaceBefore, 'needSpaceBefore', {
+                node: attrNode,
+                loc: equalToken.loc.start,
+                fix(fixer) {
+                  return fixer.insertTextBefore(equalToken, ' ');
+                },
+              });
+            }
+            if (!spacedAfter) {
+              report(context, messages.needSpaceAfter, 'needSpaceAfter', {
+                node: attrNode,
+                loc: equalToken.loc.start,
+                fix(fixer) {
+                  return fixer.insertTextAfter(equalToken, ' ');
+                },
+              });
+            }
           }
         });
       },
diff --git a/lib/util/propTypes.js b/lib/util/propTypes.js
index f3d192e66c..7cd4e2ab7b 100644
--- a/lib/util/propTypes.js
+++ b/lib/util/propTypes.js
@@ -170,27 +170,31 @@ module.exports = function propTypesInstructions(context, components, utils) {
         type: 'shape',
         children: {},
       };
-      iterateProperties(context, annotation.properties, (childKey, childValue, propNode) => {
-        const fullName = [parentName, childKey].join('.');
-        if (childKey || childValue) {
-          const types = buildTypeAnnotationDeclarationTypes(childValue, fullName, seen);
-          types.fullName = fullName;
-          types.name = childKey;
-          types.node = propNode;
-          types.isRequired = !childValue.optional;
-          shapeTypeDefinition.children[childKey] = types;
-        }
-      },
-      (spreadNode) => {
-        const key = astUtil.getKeyValue(context, spreadNode);
-        const types = buildTypeAnnotationDeclarationTypes(spreadNode, key, seen);
-        if (!types.children) {
-          containsUnresolvedObjectTypeSpread = true;
-        } else {
-          Object.assign(shapeTypeDefinition, types.children);
+      iterateProperties(
+        context,
+        annotation.properties,
+        (childKey, childValue, propNode) => {
+          const fullName = [parentName, childKey].join('.');
+          if (childKey || childValue) {
+            const types = buildTypeAnnotationDeclarationTypes(childValue, fullName, seen);
+            types.fullName = fullName;
+            types.name = childKey;
+            types.node = propNode;
+            types.isRequired = !childValue.optional;
+            shapeTypeDefinition.children[childKey] = types;
+          }
+        },
+        (spreadNode) => {
+          const key = astUtil.getKeyValue(context, spreadNode);
+          const types = buildTypeAnnotationDeclarationTypes(spreadNode, key, seen);
+          if (!types.children) {
+            containsUnresolvedObjectTypeSpread = true;
+          } else {
+            Object.assign(shapeTypeDefinition, types.children);
+          }
+          containsSpread = true;
         }
-        containsSpread = true;
-      });
+      );
 
       // Mark if this shape has spread or an indexer. We will know to consider all props from this shape as having propTypes,
       // but still have the ability to detect unused children of this shape.
diff --git a/package.json b/package.json
index 210dc79f75..c5a87761e6 100644
--- a/package.json
+++ b/package.json
@@ -5,7 +5,7 @@
   "description": "React specific linting rules for ESLint",
   "main": "index.js",
   "scripts": {
-    "lint": "eslint ./",
+    "lint": "eslint .",
     "postlint": "npm run type-check",
     "pretest": "npm run lint",
     "test": "npm run unit-test",
@@ -57,7 +57,7 @@
     "aud": "^1.1.5",
     "babel-eslint": "^8 || ^9 || ^10.1.0",
     "eslint": "^3 || ^4 || ^5 || ^6 || ^7",
-    "eslint-config-airbnb-base": "^14.2.1",
+    "eslint-config-airbnb-base": "^15.0.0",
     "eslint-plugin-eslint-plugin": "^2.3.0 || ^3.5.3 || ^4.0.1",
     "eslint-plugin-import": "^2.25.2",
     "eslint-remote-tester": "^2.0.1",
diff --git a/tests/lib/rules/no-deprecated.js b/tests/lib/rules/no-deprecated.js
index 4c43bf18e2..bf0e5bd7c3 100644
--- a/tests/lib/rules/no-deprecated.js
+++ b/tests/lib/rules/no-deprecated.js
@@ -237,20 +237,24 @@ ruleTester.run('no-deprecated', rule, {
       `,
       errors: [
         errorMessage(
-          'componentWillMount', '16.9.0', 'UNSAFE_componentWillMount',
-          'https://reactjs.org/docs/react-component.html#unsafe_componentwillmount. '
-            + 'Use https://github.com/reactjs/react-codemod#rename-unsafe-lifecycles to automatically update your components.',
+          'componentWillMount',
+          '16.9.0',
+          'UNSAFE_componentWillMount',
+          'https://reactjs.org/docs/react-component.html#unsafe_componentwillmount. Use https://github.com/reactjs/react-codemod#rename-unsafe-lifecycles to automatically update your components.',
           { type: 'Identifier', line: 3, column: 11 }
         ),
         errorMessage(
-          'componentWillReceiveProps', '16.9.0', 'UNSAFE_componentWillReceiveProps',
-          'https://reactjs.org/docs/react-component.html#unsafe_componentwillreceiveprops. '
-          + 'Use https://github.com/reactjs/react-codemod#rename-unsafe-lifecycles to automatically update your components.',
+          'componentWillReceiveProps',
+          '16.9.0',
+          'UNSAFE_componentWillReceiveProps',
+          'https://reactjs.org/docs/react-component.html#unsafe_componentwillreceiveprops. Use https://github.com/reactjs/react-codemod#rename-unsafe-lifecycles to automatically update your components.',
           { type: 'Identifier', line: 4, column: 11 }
         ),
-        errorMessage('componentWillUpdate', '16.9.0', 'UNSAFE_componentWillUpdate',
-          'https://reactjs.org/docs/react-component.html#unsafe_componentwillupdate. '
-          + 'Use https://github.com/reactjs/react-codemod#rename-unsafe-lifecycles to automatically update your components.',
+        errorMessage(
+          'componentWillUpdate',
+          '16.9.0',
+          'UNSAFE_componentWillUpdate',
+          'https://reactjs.org/docs/react-component.html#unsafe_componentwillupdate. Use https://github.com/reactjs/react-codemod#rename-unsafe-lifecycles to automatically update your components.',
           { type: 'Identifier', line: 5, column: 11 }
         ),
       ],
@@ -267,20 +271,24 @@ ruleTester.run('no-deprecated', rule, {
       `,
       errors: [
         errorMessage(
-          'componentWillMount', '16.9.0', 'UNSAFE_componentWillMount',
-          'https://reactjs.org/docs/react-component.html#unsafe_componentwillmount. '
-            + 'Use https://github.com/reactjs/react-codemod#rename-unsafe-lifecycles to automatically update your components.',
+          'componentWillMount',
+          '16.9.0',
+          'UNSAFE_componentWillMount',
+          'https://reactjs.org/docs/react-component.html#unsafe_componentwillmount. Use https://github.com/reactjs/react-codemod#rename-unsafe-lifecycles to automatically update your components.',
           { type: 'Identifier', line: 4, column: 13 }
         ),
         errorMessage(
-          'componentWillReceiveProps', '16.9.0', 'UNSAFE_componentWillReceiveProps',
-          'https://reactjs.org/docs/react-component.html#unsafe_componentwillreceiveprops. '
-            + 'Use https://github.com/reactjs/react-codemod#rename-unsafe-lifecycles to automatically update your components.',
+          'componentWillReceiveProps',
+          '16.9.0',
+          'UNSAFE_componentWillReceiveProps',
+          'https://reactjs.org/docs/react-component.html#unsafe_componentwillreceiveprops. Use https://github.com/reactjs/react-codemod#rename-unsafe-lifecycles to automatically update your components.',
           { type: 'Identifier', line: 5, column: 13 }
         ),
-        errorMessage('componentWillUpdate', '16.9.0', 'UNSAFE_componentWillUpdate',
-          'https://reactjs.org/docs/react-component.html#unsafe_componentwillupdate. '
-            + 'Use https://github.com/reactjs/react-codemod#rename-unsafe-lifecycles to automatically update your components.',
+        errorMessage(
+          'componentWillUpdate',
+          '16.9.0',
+          'UNSAFE_componentWillUpdate',
+          'https://reactjs.org/docs/react-component.html#unsafe_componentwillupdate. Use https://github.com/reactjs/react-codemod#rename-unsafe-lifecycles to automatically update your components.',
           { type: 'Identifier', line: 6, column: 13 }
         ),
       ],
@@ -295,20 +303,24 @@ ruleTester.run('no-deprecated', rule, {
       `,
       errors: [
         errorMessage(
-          'componentWillMount', '16.9.0', 'UNSAFE_componentWillMount',
-          'https://reactjs.org/docs/react-component.html#unsafe_componentwillmount. '
-            + 'Use https://github.com/reactjs/react-codemod#rename-unsafe-lifecycles to automatically update your components.',
+          'componentWillMount',
+          '16.9.0',
+          'UNSAFE_componentWillMount',
+          'https://reactjs.org/docs/react-component.html#unsafe_componentwillmount. Use https://github.com/reactjs/react-codemod#rename-unsafe-lifecycles to automatically update your components.',
           { type: 'Identifier', line: 3, column: 11 }
         ),
         errorMessage(
-          'componentWillReceiveProps', '16.9.0', 'UNSAFE_componentWillReceiveProps',
-          'https://reactjs.org/docs/react-component.html#unsafe_componentwillreceiveprops. '
-            + 'Use https://github.com/reactjs/react-codemod#rename-unsafe-lifecycles to automatically update your components.',
+          'componentWillReceiveProps',
+          '16.9.0',
+          'UNSAFE_componentWillReceiveProps',
+          'https://reactjs.org/docs/react-component.html#unsafe_componentwillreceiveprops. Use https://github.com/reactjs/react-codemod#rename-unsafe-lifecycles to automatically update your components.',
           { type: 'Identifier', line: 4, column: 11 }
         ),
-        errorMessage('componentWillUpdate', '16.9.0', 'UNSAFE_componentWillUpdate',
-          'https://reactjs.org/docs/react-component.html#unsafe_componentwillupdate. '
-            + 'Use https://github.com/reactjs/react-codemod#rename-unsafe-lifecycles to automatically update your components.',
+        errorMessage(
+          'componentWillUpdate',
+          '16.9.0',
+          'UNSAFE_componentWillUpdate',
+          'https://reactjs.org/docs/react-component.html#unsafe_componentwillupdate. Use https://github.com/reactjs/react-codemod#rename-unsafe-lifecycles to automatically update your components.',
           { type: 'Identifier', line: 5, column: 11 }
         ),
       ],
@@ -323,20 +335,24 @@ ruleTester.run('no-deprecated', rule, {
       `,
       errors: [
         errorMessage(
-          'componentWillMount', '16.9.0', 'UNSAFE_componentWillMount',
-          'https://reactjs.org/docs/react-component.html#unsafe_componentwillmount. '
-            + 'Use https://github.com/reactjs/react-codemod#rename-unsafe-lifecycles to automatically update your components.',
+          'componentWillMount',
+          '16.9.0',
+          'UNSAFE_componentWillMount',
+          'https://reactjs.org/docs/react-component.html#unsafe_componentwillmount. Use https://github.com/reactjs/react-codemod#rename-unsafe-lifecycles to automatically update your components.',
           { type: 'Identifier', line: 3, column: 11 }
         ),
         errorMessage(
-          'componentWillReceiveProps', '16.9.0', 'UNSAFE_componentWillReceiveProps',
-          'https://reactjs.org/docs/react-component.html#unsafe_componentwillreceiveprops. '
-            + 'Use https://github.com/reactjs/react-codemod#rename-unsafe-lifecycles to automatically update your components.',
+          'componentWillReceiveProps',
+          '16.9.0',
+          'UNSAFE_componentWillReceiveProps',
+          'https://reactjs.org/docs/react-component.html#unsafe_componentwillreceiveprops. Use https://github.com/reactjs/react-codemod#rename-unsafe-lifecycles to automatically update your components.',
           { type: 'Identifier', line: 4, column: 11 }
         ),
-        errorMessage('componentWillUpdate', '16.9.0', 'UNSAFE_componentWillUpdate',
-          'https://reactjs.org/docs/react-component.html#unsafe_componentwillupdate. '
-            + 'Use https://github.com/reactjs/react-codemod#rename-unsafe-lifecycles to automatically update your components.',
+        errorMessage(
+          'componentWillUpdate',
+          '16.9.0',
+          'UNSAFE_componentWillUpdate',
+          'https://reactjs.org/docs/react-component.html#unsafe_componentwillupdate. Use https://github.com/reactjs/react-codemod#rename-unsafe-lifecycles to automatically update your components.',
           { type: 'Identifier', line: 5, column: 11 }
         ),
       ],
@@ -351,20 +367,24 @@ ruleTester.run('no-deprecated', rule, {
       `,
       errors: [
         errorMessage(
-          'componentWillMount', '16.9.0', 'UNSAFE_componentWillMount',
-          'https://reactjs.org/docs/react-component.html#unsafe_componentwillmount. '
-            + 'Use https://github.com/reactjs/react-codemod#rename-unsafe-lifecycles to automatically update your components.',
+          'componentWillMount',
+          '16.9.0',
+          'UNSAFE_componentWillMount',
+          'https://reactjs.org/docs/react-component.html#unsafe_componentwillmount. Use https://github.com/reactjs/react-codemod#rename-unsafe-lifecycles to automatically update your components.',
           { type: 'Identifier', line: 3, column: 11 }
         ),
         errorMessage(
-          'componentWillReceiveProps', '16.9.0', 'UNSAFE_componentWillReceiveProps',
-          'https://reactjs.org/docs/react-component.html#unsafe_componentwillreceiveprops. '
-            + 'Use https://github.com/reactjs/react-codemod#rename-unsafe-lifecycles to automatically update your components.',
+          'componentWillReceiveProps',
+          '16.9.0',
+          'UNSAFE_componentWillReceiveProps',
+          'https://reactjs.org/docs/react-component.html#unsafe_componentwillreceiveprops. Use https://github.com/reactjs/react-codemod#rename-unsafe-lifecycles to automatically update your components.',
           { type: 'Identifier', line: 4, column: 11 }
         ),
-        errorMessage('componentWillUpdate', '16.9.0', 'UNSAFE_componentWillUpdate',
-          'https://reactjs.org/docs/react-component.html#unsafe_componentwillupdate. '
-            + 'Use https://github.com/reactjs/react-codemod#rename-unsafe-lifecycles to automatically update your components.',
+        errorMessage(
+          'componentWillUpdate',
+          '16.9.0',
+          'UNSAFE_componentWillUpdate',
+          'https://reactjs.org/docs/react-component.html#unsafe_componentwillupdate. Use https://github.com/reactjs/react-codemod#rename-unsafe-lifecycles to automatically update your components.',
           { type: 'Identifier', line: 5, column: 11 }
         ),
       ],
@@ -379,20 +399,24 @@ ruleTester.run('no-deprecated', rule, {
       `,
       errors: [
         errorMessage(
-          'componentWillMount', '16.9.0', 'UNSAFE_componentWillMount',
-          'https://reactjs.org/docs/react-component.html#unsafe_componentwillmount. '
-            + 'Use https://github.com/reactjs/react-codemod#rename-unsafe-lifecycles to automatically update your components.',
+          'componentWillMount',
+          '16.9.0',
+          'UNSAFE_componentWillMount',
+          'https://reactjs.org/docs/react-component.html#unsafe_componentwillmount. Use https://github.com/reactjs/react-codemod#rename-unsafe-lifecycles to automatically update your components.',
           { type: 'Identifier', line: 3, column: 11 }
         ),
         errorMessage(
-          'componentWillReceiveProps', '16.9.0', 'UNSAFE_componentWillReceiveProps',
-          'https://reactjs.org/docs/react-component.html#unsafe_componentwillreceiveprops. '
-            + 'Use https://github.com/reactjs/react-codemod#rename-unsafe-lifecycles to automatically update your components.',
+          'componentWillReceiveProps',
+          '16.9.0',
+          'UNSAFE_componentWillReceiveProps',
+          'https://reactjs.org/docs/react-component.html#unsafe_componentwillreceiveprops. Use https://github.com/reactjs/react-codemod#rename-unsafe-lifecycles to automatically update your components.',
           { type: 'Identifier', line: 4, column: 11 }
         ),
-        errorMessage('componentWillUpdate', '16.9.0', 'UNSAFE_componentWillUpdate',
-          'https://reactjs.org/docs/react-component.html#unsafe_componentwillupdate. '
-            + 'Use https://github.com/reactjs/react-codemod#rename-unsafe-lifecycles to automatically update your components.',
+        errorMessage(
+          'componentWillUpdate',
+          '16.9.0',
+          'UNSAFE_componentWillUpdate',
+          'https://reactjs.org/docs/react-component.html#unsafe_componentwillupdate. Use https://github.com/reactjs/react-codemod#rename-unsafe-lifecycles to automatically update your components.',
           { type: 'Identifier', line: 5, column: 11 }
         ),
       ],
@@ -408,20 +432,24 @@ ruleTester.run('no-deprecated', rule, {
       `,
       errors: [
         errorMessage(
-          'componentWillMount', '16.9.0', 'UNSAFE_componentWillMount',
-          'https://reactjs.org/docs/react-component.html#unsafe_componentwillmount. '
-            + 'Use https://github.com/reactjs/react-codemod#rename-unsafe-lifecycles to automatically update your components.',
+          'componentWillMount',
+          '16.9.0',
+          'UNSAFE_componentWillMount',
+          'https://reactjs.org/docs/react-component.html#unsafe_componentwillmount. Use https://github.com/reactjs/react-codemod#rename-unsafe-lifecycles to automatically update your components.',
           { type: 'Identifier', line: 4, column: 11 }
         ),
         errorMessage(
-          'componentWillReceiveProps', '16.9.0', 'UNSAFE_componentWillReceiveProps',
-          'https://reactjs.org/docs/react-component.html#unsafe_componentwillreceiveprops. '
-            + 'Use https://github.com/reactjs/react-codemod#rename-unsafe-lifecycles to automatically update your components.',
+          'componentWillReceiveProps',
+          '16.9.0',
+          'UNSAFE_componentWillReceiveProps',
+          'https://reactjs.org/docs/react-component.html#unsafe_componentwillreceiveprops. Use https://github.com/reactjs/react-codemod#rename-unsafe-lifecycles to automatically update your components.',
           { type: 'Identifier', line: 5, column: 11 }
         ),
-        errorMessage('componentWillUpdate', '16.9.0', 'UNSAFE_componentWillUpdate',
-          'https://reactjs.org/docs/react-component.html#unsafe_componentwillupdate. '
-            + 'Use https://github.com/reactjs/react-codemod#rename-unsafe-lifecycles to automatically update your components.',
+        errorMessage(
+          'componentWillUpdate',
+          '16.9.0',
+          'UNSAFE_componentWillUpdate',
+          'https://reactjs.org/docs/react-component.html#unsafe_componentwillupdate. Use https://github.com/reactjs/react-codemod#rename-unsafe-lifecycles to automatically update your components.',
           { type: 'Identifier', line: 6, column: 11 }
         ),
       ],