[Fix] restore older eslint compat by using object.assign instead of Object.assign

Author: ljharb

lib/rules/no-unused-prop-types.js

@@ -8,6 +8,7 @@
 // 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');
@@ -51,7 +52,7 @@ module.exports = {
 
     var defaults = {skipShapeProps: true};
     var sourceCode = context.getSourceCode();
-    var configuration = Object.assign({}, defaults, context.options[0] || {});
+    var configuration = assign({}, defaults, context.options[0] || {});
     var skipShapeProps = configuration.skipShapeProps;
     var customValidators = configuration.customValidators || [];
     // Used to track the type annotations in scope.

package.json

@@ -26,7 +26,8 @@
     "doctrine": "^1.2.2",
     "has": "^1.0.1",
     "jsx-ast-utils": "^1.3.4",
-    "array.prototype.find": "^2.0.1"
+    "array.prototype.find": "^2.0.1",
+    "object.assign": "^4.0.4"
   },
   "devDependencies": {
     "babel-eslint": "7.1.1",

tests/lib/rules/require-default-props.js

@@ -10,6 +10,7 @@
 
 var rule = require('../../../lib/rules/require-default-props');
 var RuleTester = require('eslint').RuleTester;
+var assign = require('object.assign');
 
 require('babel-eslint');
 
@@ -409,7 +410,7 @@ ruleTester.run('require-default-props', rule, {
         '  return <div>{foo}{bar}</div>;',
         '}'
       ].join('\n'),
-      parserOptions: Object.assign({sourceType: 'module'}, parserOptions)
+      parserOptions: assign({sourceType: 'module'}, parserOptions)
     },
     {
       code: [
@@ -424,7 +425,7 @@ ruleTester.run('require-default-props', rule, {
         '  return <div>{foo}{bar}</div>;',
         '}'
       ].join('\n'),
-      parserOptions: Object.assign({sourceType: 'module'}, parserOptions)
+      parserOptions: assign({sourceType: 'module'}, parserOptions)
     },
     // using spread operator
     {

tests/lib/rules/style-prop-object.js

@@ -10,6 +10,7 @@
 
 var rule = require('../../../lib/rules/style-prop-object');
 var RuleTester = require('eslint').RuleTester;
+var assign = require('object.assign');
 
 var parserOptions = {
   ecmaVersion: 6,
@@ -76,7 +77,7 @@ ruleTester.run('style-prop-object', rule, {
         '  return <div style={styles} />;',
         '}'
       ].join('\n'),
-      parserOptions: Object.assign({sourceType: 'module'}, parserOptions)
+      parserOptions: assign({sourceType: 'module'}, parserOptions)
     },
     {
       code: [
@@ -86,7 +87,7 @@ ruleTester.run('style-prop-object', rule, {
         '  return <div style={styles} />;',
         '}'
       ].join('\n'),
-      parserOptions: Object.assign({sourceType: 'module'}, parserOptions)
+      parserOptions: assign({sourceType: 'module'}, parserOptions)
     },
     {
       code: [
@@ -101,7 +102,7 @@ ruleTester.run('style-prop-object', rule, {
         'const styles = Object.assign({ color: \'red\' }, mystyles);',
         'React.createElement("div", { style: styles });'
       ].join('\n'),
-      parserOptions: Object.assign({sourceType: 'module'}, parserOptions)
+      parserOptions: assign({sourceType: 'module'}, parserOptions)
     },
     {
       code: '<div style></div>',