fixing eslint errors;regenerate package-lock.json;fix payment method prop error message

Author: rajeev-k-tomy

.gitignore

@@ -0,0 +1 @@
+.DS_Store

src/reactapp/.eslintrc.js

@@ -1,24 +1,33 @@
 module.exports = {
-  extends: ['react-app', 'plugin:prettier/recommended'],
-  overrides: [
-    {
-      files: ["**/*.js?(x)"],
-      rules: {
-        'arrow-body-style': [2, 'as-needed'],
-        'import/prefer-default-export': 0,
-        'no-underscore-dangle': 0,
-        'react/jsx-props-no-spreading': 0,
-        'no-console': ['error', { allow: ['warn', 'error'] }],
-        'react/forbid-prop-types': [
-          'error',
-          {
-            forbid: ['any', 'array'],
-            checkContextTypes: true,
-            checkChildContextTypes: true,
-          },
-        ],
-        'react/no-danger': 0,
+  parser: '@babel/eslint-parser',
+  extends: ['airbnb', 'plugin:prettier/recommended'],
+  env: {
+    es6: true,
+    node: true,
+    jest: true,
+    browser: true,
+  },
+  parserOptions: {
+    ecmaVersion: 6,
+    sourceType: 'module',
+    ecmaFeatures: {
+      jsx: true,
+    },
+  },
+  rules: {
+    'arrow-body-style': [2, 'as-needed'],
+    'import/prefer-default-export': 0,
+    'no-underscore-dangle': 0,
+    'react/jsx-props-no-spreading': 0,
+    'no-console': ['error', { allow: ['warn', 'error'] }],
+    'react/forbid-prop-types': [
+      'error',
+      {
+        forbid: ['any', 'array'],
+        checkContextTypes: true,
+        checkChildContextTypes: true,
       },
-    }
-  ]
+    ],
+    'react/no-danger': 0,
+  },
 };