fix type

Author: JoviDeCroock

src/__tests__/__snapshots__/parser.test.ts.snap

@@ -185,7 +185,7 @@ exports[`parse > parses the kitchen sink document like graphql.js does 1`] = `
                                     "selectionSet": undefined,
                                   },
                                   {
-                                    "arguments": [],
+                                    "arguments": undefined,
                                     "directives": [
                                       {
                                         "arguments": [],
@@ -645,8 +645,7 @@ exports[`parse > parses the kitchen sink document like graphql.js does 1`] = `
                       "value": {
                         "block": true,
                         "kind": "StringValue",
-                        "value": "block string uses """
-",
+                        "value": "block string uses """",
                       },
                     },
                   ],

src/ast.ts

@@ -188,11 +188,10 @@ export type FragmentSpreadNode = Or<
   {
     readonly kind: Kind.FRAGMENT_SPREAD;
     readonly name: NameNode;
-    readonly arguments?: ReadonlyArray<ArgumentNode>;
     readonly directives?: ReadonlyArray<DirectiveNode>;
     readonly loc?: Location;
   }
->;
+> & { readonly arguments?: ReadonlyArray<ArgumentNode> };
 
 export type InlineFragmentNode = Or<
   GraphQL.InlineFragmentNode,

src/parser.ts

@@ -324,7 +324,7 @@ function fragmentSpread(): ast.FragmentSpreadNode | ast.InlineFragmentNode | und
         kind: 'FragmentSpread' as Kind.FRAGMENT_SPREAD,
         name: _name,
         directives: directives(false),
-        arguments: _arguments,
+        arguments: _arguments.length ? _arguments : undefined,
       };
     } else {
       idx = _idx;

src/printer.ts

@@ -97,7 +97,8 @@ const nodes: {
   },
   FragmentSpread(node) {
     let out = '...' + node.name.value;
-    if (hasItems(node.arguments)) out += '(' + node.arguments.map(nodes.Argument!).join(', ') + ')';
+    if ('arguments' in node && Array.isArray(node.arguments) && hasItems(node.arguments))
+      out += '(' + node.arguments.map(nodes.Argument!).join(', ') + ')';
     if (hasItems(node.directives)) out += ' ' + node.directives.map(nodes.Directive!).join(' ');
     return out;
   },