Temporary fix comments inside of flow type spread (#1716)

This is breaking on fb code. While benjamn/ast-types#221 is getting merged in ast-type, we can add it in prettier so it fixes the issue.

Fixes #1632

src/typescript-ast-nodes.js

@@ -8,6 +8,13 @@ module.exports = function(fork) {
   const or = types.Type.or;
   const defaults = fork.use(require("ast-types/lib/shared")).defaults;
 
+  // Putting it here while it's being merged upstream
+  // https://github.com/benjamn/ast-types/pull/221
+  def("ObjectTypeSpreadProperty")
+    .bases("Node")
+    .build("argument")
+    .field("argument", def("Type"));
+
   // Ambient
   def("TSAmbientVariableDefinition").bases("VariableDeclaration");
 

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

@@ -0,0 +1,10 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`comments.js 1`] = `
+type X = {...Y/**/};
+type X = {/**/...Y};
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+type X = { ...Y /**/ };
+type X = { /**/ ...Y };
+
+`;

tests/flow_type_spread/comments.js

@@ -0,0 +1,2 @@
+type X = {...Y/**/};
+type X = {/**/...Y};

tests/flow_type_spread/jsfmt.spec.js

@@ -0,0 +1 @@
+run_spec(__dirname, null, ["babylon"]);