refactor(fieldNodes)

Move renameFieldNode, wrapFieldNode, and collectFields into utils.

src/stitching/extractFields.ts

@@ -1,5 +1,5 @@
 import { FieldNode, FragmentDefinitionNode } from 'graphql';
-import { collectFields } from './collectFields';
+import { collectFields } from '../utils';
 
 export function extractFields({
   fieldNode,

src/stitching/index.ts

@@ -5,7 +5,6 @@ import delegateToSchema from './delegateToSchema';
 import defaultMergedResolver from './defaultMergedResolver';
 import { wrapField, extractField, renameField, createMergedResolver } from './createMergedResolver';
 import { extractFields } from './extractFields';
-import { collectFields } from './collectFields';
 
 
 export {
@@ -19,7 +18,6 @@ export {
   defaultCreateRemoteResolver,
   defaultMergedResolver,
   createMergedResolver,
-  collectFields,
   extractFields,
 
   // TBD: deprecate in favor of createMergedResolver?

src/test/testAlternateMergeSchemas.ts

@@ -11,7 +11,6 @@ import {
   GraphQLScalarType,
   FieldNode,
   printSchema,
-  Kind,
 } from 'graphql';
 import {
   transformSchema,
@@ -46,36 +45,7 @@ import {
 } from '../stitching';
 import { SubschemaConfig, MergedTypeConfig } from '../Interfaces';
 import isSpecifiedScalarType from '../utils/isSpecifiedScalarType';
-
-function renameFieldNode(fieldNode: FieldNode, name: string): FieldNode {
-  return {
-    ...fieldNode,
-    name: {
-      ...fieldNode.name,
-      value: name,
-    }
-  };
-}
-
-function wrapFieldNode(fieldNode: FieldNode, path: Array<string>): FieldNode {
-  let newFieldNode = fieldNode;
-  path.forEach(fieldName => {
-    newFieldNode = {
-      kind: Kind.FIELD,
-      name: {
-        kind: Kind.NAME,
-        value: fieldName,
-      },
-      selectionSet: {
-        kind: Kind.SELECTION_SET,
-        selections: [
-          fieldNode,
-        ]
-      }
-    };
-  });
-  return newFieldNode;
-}
+import { wrapFieldNode, renameFieldNode } from '../utils/fieldNodes';
 
 let linkSchema = `
   """

src/stitching/collectFields.ts → src/utils/fieldNodes.ts

@@ -1,10 +1,40 @@
 import {
   FieldNode,
-  FragmentDefinitionNode,
   Kind,
+  FragmentDefinitionNode,
   SelectionSetNode,
 } from 'graphql';
 
+export function renameFieldNode(fieldNode: FieldNode, name: string): FieldNode {
+  return {
+    ...fieldNode,
+    name: {
+      ...fieldNode.name,
+      value: name,
+    }
+  };
+}
+
+export function wrapFieldNode(fieldNode: FieldNode, path: Array<string>): FieldNode {
+  let newFieldNode = fieldNode;
+  path.forEach(fieldName => {
+    newFieldNode = {
+      kind: Kind.FIELD,
+      name: {
+        kind: Kind.NAME,
+        value: fieldName,
+      },
+      selectionSet: {
+        kind: Kind.SELECTION_SET,
+        selections: [
+          fieldNode,
+        ]
+      }
+    };
+  });
+  return newFieldNode;
+}
+
 export function collectFields(
   selectionSet: SelectionSetNode,
   fragments: Record<string, FragmentDefinitionNode>,

src/utils/index.ts

@@ -14,3 +14,8 @@ export {
 } from './transformInputValue';
 export { concatInlineFragments, parseFragmentToInlineFragment } from './fragments';
 export { mergeDeep } from './mergeDeep';
+export {
+  collectFields,
+  wrapFieldNode,
+  renameFieldNode,
+} from './fieldNodes';