Add support for GraphQL object values (#2010)

src/printer-graphql.js

@@ -130,6 +130,27 @@ function genericPrint(path, options, print) {
         ])
       );
     }
+    case "ObjectValue": {
+      return group(
+        concat([
+          "{",
+          n.fields.length > 0 ? " " : "",
+          indent(
+            concat([
+              softline,
+              join(
+                concat([",", ifBreak("", " "), softline]),
+                path.map(print, "fields")
+              )
+            ])
+          ),
+          softline,
+          ifBreak("", n.fields.length > 0 ? " " : ""),
+          "}"
+        ])
+      );
+    }
+    case "ObjectField":
     case "Argument": {
       return concat([
         path.call(print, "name"),

tests/graphql_objects/__snapshots__/jsfmt.spec.js.snap

@@ -0,0 +1,25 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`objects.graphql 1`] = `
+{
+  shortWithObj(obj: { hello: "world", x: 5 })
+  multilineObj(obj: {
+    hello: "world",
+    x: 5
+  })
+  longWithObj(obj: { ,,longString: "hello world this is a very long string!", list: [1, 2, 3, 4, 5, 6, 7] })
+  emptyObj(arg: {})
+}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+{
+  shortWithObj(obj: { hello: "world", x: 5 })
+  multilineObj(obj: { hello: "world", x: 5 })
+  longWithObj(
+    obj: {
+      longString: "hello world this is a very long string!",
+      list: [1, 2, 3, 4, 5, 6, 7]
+    }
+  )
+  emptyObj(arg: {})
+}
+`;

tests/graphql_objects/jsfmt.spec.js

@@ -0,0 +1 @@
+run_spec(__dirname, { parser: "graphql" });

tests/graphql_objects/objects.graphql

@@ -0,0 +1,9 @@
+{
+  shortWithObj(obj: { hello: "world", x: 5 })
+  multilineObj(obj: {
+    hello: "world",
+    x: 5
+  })
+  longWithObj(obj: { ,,longString: "hello world this is a very long string!", list: [1, 2, 3, 4, 5, 6, 7] })
+  emptyObj(arg: {})
+}