Rule sort-prop-types add noSortAlphabetically

Same as jsx-eslint#979

Author: christophehurpeau

lib/rules/sort-prop-types.js

@@ -34,6 +34,10 @@ module.exports = {
         ignoreCase: {
           type: 'boolean'
         },
+        // Whether alphabetical sorting should be enforced
+        noSortAlphabetically: {
+          type: 'boolean'
+        },
         sortShapeProp: {
           type: 'boolean'
         }
@@ -48,6 +52,7 @@ module.exports = {
     const requiredFirst = configuration.requiredFirst || false;
     const callbacksLast = configuration.callbacksLast || false;
     const ignoreCase = configuration.ignoreCase || false;
+    const noSortAlphabetically = configuration.noSortAlphabetically || false;
     const sortShapeProp = configuration.sortShapeProp || false;
     const propWrapperFunctions = new Set(context.settings.propWrapperFunctions || []);
 
@@ -216,7 +221,7 @@ module.exports = {
           }
         }
 
-        if (currentPropName < prevPropName) {
+        if (!noSortAlphabetically && currentPropName < prevPropName) {
           context.report({
             node: curr,
             message: 'Prop types declarations should be sorted alphabetically',