From 9c17854ba132b63608a29cdfc5d0536d3af5169a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Martin=20Trob=C3=A4ck?= <martintk@axis.com>
Date: Wed, 20 Jan 2021 10:43:01 +0100
Subject: [PATCH] fix: change OperationTypeNode to enum

Changes OperationTypeNode to enum instead of a
union type. This allows developers to use the type
as `OperationTypeNode.QUERY` instead of risking to
msispell the string 'query'.

Example:

Instead of having to write

`operation === 'query'`

you can instead write

`operation === OperationTypeNode.QUERY`

This should not be a breaking change, since the string
version should still work.
---
 src/language/ast.d.ts | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/language/ast.d.ts b/src/language/ast.d.ts
index 61cb9f4eb5..aba0bbcf22 100644
--- a/src/language/ast.d.ts
+++ b/src/language/ast.d.ts
@@ -234,7 +234,11 @@ export interface OperationDefinitionNode {
   readonly selectionSet: SelectionSetNode;
 }
 
-export type OperationTypeNode = 'query' | 'mutation' | 'subscription';
+export enum OperationTypeNode {
+  QUERY = 'query',
+  MUTATION = 'mutation',
+  SUBSCRIPTION = 'subscription',
+}
 
 export interface VariableDefinitionNode {
   readonly kind: 'VariableDefinition';