fix: variance issues with babel 7 (#339)

Author: pnevyk

src/rules/sortKeys.js

@@ -70,6 +70,16 @@ const variances = {
   plus: '+'
 };
 
+const getVariance = (node) => {
+  if (_.isString(node.variance)) {
+    return variances[node.variance] || '';
+  } else if (_.get(node, 'variance.type') === 'Variance') {
+    return variances[node.variance.kind] || '';
+  } else {
+    return '';
+  }
+};
+
 const generateOrderedList = (context, sort, properties) => {
   return properties.map((property) => {
     const name = getParameterName(property, context);
@@ -84,7 +94,7 @@ const generateOrderedList = (context, sort, properties) => {
       value = context.getSourceCode().getText(property.value);
     }
 
-    return [(variances[property.variance] || '') + name + (property.optional ? '?' : ''), value];
+    return [name, getVariance(property) + name + (property.optional ? '?' : ''), value];
   })
     .sort((first, second) => {
       return sort(first[0], second[0]) ? -1 : 1;
@@ -94,7 +104,7 @@ const generateOrderedList = (context, sort, properties) => {
         return item[0];
       }
 
-      return item[0] + ': ' + item[1];
+      return item[1] + ': ' + item[2];
     });
 };
 

tests/rules/assertions/sortKeys.js

@@ -231,6 +231,46 @@ export default {
           },
         }
       `
+    },
+    {
+      code: `
+        type FooType = {
+          +c: number,
+          -b: number,
+          a: number,
+        }
+      `,
+      errors: [
+        {message: 'Expected type annotations to be in ascending order. "b" should be before "c".'},
+        {message: 'Expected type annotations to be in ascending order. "a" should be before "b".'}
+      ],
+      output: `
+        type FooType = {
+          a: number,
+          -b: number,
+          +c: number,
+        }
+      `
+    },
+    {
+      code: `
+        type FooType = {|
+          +c: number,
+          -b: number,
+          a: number,
+        |}
+      `,
+      errors: [
+        {message: 'Expected type annotations to be in ascending order. "b" should be before "c".'},
+        {message: 'Expected type annotations to be in ascending order. "a" should be before "b".'}
+      ],
+      output: `
+        type FooType = {|
+          a: number,
+          -b: number,
+          +c: number,
+        |}
+      `
     }
     /* eslint-enable no-restricted-syntax */
   ],