feat: Ignore sorting for queries and mutations when printing schema

Author: wtrocki

src/utilities/schemaPrinter.js

@@ -87,7 +87,13 @@ function printFilteredSchema(
   const directives = schema.getDirectives().filter(directiveFilter);
   const typeMap = schema.getTypeMap();
   const types = objectValues(typeMap)
-    .sort((type1, type2) => type1.name.localeCompare(type2.name))
+    .sort((type1, type2) => {
+      if (isMutationType(schema, type1)) return -1;
+      if (isQueryType(schema, type1)) return -1;
+      if (isSubscriptionType(schema, type1)) return -1;
+
+      return type1.name.localeCompare(type2.name);
+    })
     .filter(typeFilter);
 
   return (

src/utilities/typeComparators.js

@@ -120,3 +120,51 @@ export function doTypesOverlap(
   // Otherwise the types do not overlap.
   return false;
 }
+
+/**
+ * Checks if type is query
+ *
+ * @internal
+ */
+export function isQueryType(schema: GraphQLSchema, type: GraphQLCompositeType) {
+  const schemaType = schema.getQueryType();
+  if (schemaType) {
+    return schemaType.name === type.name;
+  }
+
+  return false;
+}
+
+/**
+ * Checks if type is mutation
+ *
+ * @internal
+ */
+export function isMutationType(
+  schema: GraphQLSchema,
+  type: GraphQLCompositeType,
+) {
+  const schemaType = schema.getMutationType();
+  if (schemaType) {
+    return schemaType.name === type.name;
+  }
+
+  return false;
+}
+
+/**
+ * Checks if type is subscription
+ *
+ * @internal
+ */
+export function isSubscriptionType(
+  schema: GraphQLSchema,
+  type: GraphQLCompositeType,
+) {
+  const schemaType = schema.getSubscriptionType();
+  if (schemaType) {
+    return schemaType.name === type.name;
+  }
+
+  return false;
+}