fix(getEnumType): Bypass graphql 0.9.4 block for true/false values

Author: nodkz

src/ElasticApiParser.js

@@ -362,7 +362,6 @@ export default class ElasticApiParser {
       case 'list':
         return GraphQLJSON;
       case 'enum':
-        // $FlowFixMe
         if (Array.isArray(paramCfg.options)) {
           return this.getEnumType(fieldName, paramCfg.options);
         }
@@ -380,7 +379,7 @@ export default class ElasticApiParser {
     }
   }
 
-  getEnumType(fieldName: string, vals: string[]): GraphQLEnumType {
+  getEnumType(fieldName: string, vals: mixed[]): GraphQLEnumType {
     const key = fieldName;
     const subKey = JSON.stringify(vals);
 
@@ -393,9 +392,20 @@ export default class ElasticApiParser {
         (result, val) => {
           if (val === '') {
             result.empty_string = { value: '' };
+          } else if (val === 'true') {
+            result.true_string = { value: 'true' };
+          } else if (val === true) {
+            result.true_boolean = { value: true };
+          } else if (val === 'false') {
+            result.false_string = { value: 'false' };
+          } else if (val === false) {
+            result.false_boolean = { value: false };
+          } else if (val === 'null') {
+            result.null_string = { value: 'null' };
           } else if (Number.isFinite(val)) {
+            // $FlowFixMe
             result[`number_${val}`] = { value: val };
-          } else {
+          } else if (typeof val === 'string') {
             result[val] = { value: val };
           }
           return result;

src/__tests__/ElasticApiParser-test.js

@@ -311,8 +311,31 @@ describe('ElasticApiParser', () => {
       });
     });
 
+    it('should convert `true` to `true_value` (same for `false`)', () => {
+      // This is fix for https://github.com/graphql/graphql-js/pull/812
+      // Which throw error on `true`, `false` and `null`.
+      // But we allow to use this values, just renaming it.
+      const type = parser.getEnumType('f1', ['true', true, 'false', false]);
+      expect(type).toBeInstanceOf(GraphQLEnumType);
+      expect(type._values[0]).toMatchObject({
+        name: 'true_string',
+        value: 'true',
+      });
+      expect(type._values[1]).toMatchObject({
+        name: 'true_boolean',
+        value: true,
+      });
+      expect(type._values[2]).toMatchObject({
+        name: 'false_string',
+        value: 'false',
+      });
+      expect(type._values[3]).toMatchObject({
+        name: 'false_boolean',
+        value: false,
+      });
+    });
+
     it('should convert 1 to number_1', () => {
-      // $FlowFixMe
       const type = parser.getEnumType('f1', [1]);
       expect(type).toBeInstanceOf(GraphQLEnumType);
       expect(type._values[0]).toMatchObject({ name: 'number_1', value: 1 });