Update to Flow v0.68

Summary:
This version of Flow erorrs on unknown properties.

I extended the error suppression comment to support versioned suppressions,
since this is only an error after 0.68.

Test Plan: flow

Reviewers: leeb

Subscribers:

Tasks:

Tags:

Author: samwgoldman

.flowconfig

@@ -9,6 +9,8 @@
 [libs]
 
 [options]
+suppress_comment=\\(.\\|\n\\)*\\$FlowFixMe\\($\\|[^(]\\|(\\(<VERSION>\\)?)\\)
+suppress_comment=\\(.\\|\n\\)*\\$FlowIssue\\((\\(<VERSION>\\)?)\\)?:? #[0-9]+
 
 [version]
-^0.66.0
+^0.68.0

package.json

@@ -62,7 +62,7 @@
     "eslint-plugin-babel": "4.1.2",
     "eslint-plugin-flowtype": "2.42.0",
     "eslint-plugin-prettier": "2.6.0",
-    "flow-bin": "0.66.0",
+    "flow-bin": "0.68.0",
     "isparta": "4.0.0",
     "mocha": "5.0.0",
     "prettier": "1.10.2",

src/error/locatedError.js

@@ -22,6 +22,7 @@ export function locatedError(
 ): GraphQLError {
   // Note: this uses a brand-check to support GraphQL errors originating from
   // other contexts.
+  // $FlowFixMe(>=0.68.0)
   if (originalError && Array.isArray(originalError.path)) {
     return (originalError: any);
   }

src/subscription/mapAsyncIterator.js

@@ -22,6 +22,7 @@ export default function mapAsyncIterator<T, U>(
   const iterator = getAsyncIterator(iterable);
   let $return;
   let abruptClose;
+  // $FlowFixMe(>=0.68.0)
   if (typeof iterator.return === 'function') {
     $return = iterator.return;
     abruptClose = error => {
@@ -56,6 +57,7 @@ export default function mapAsyncIterator<T, U>(
         : Promise.resolve({ value: undefined, done: true });
     },
     throw(error) {
+      // $FlowFixMe(>=0.68.0)
       if (typeof iterator.throw === 'function') {
         return iterator.throw(error).then(mapResult, mapReject);
       }

yarn.lock

@@ -1390,9 +1390,9 @@ flat-cache@^1.2.1:
     graceful-fs "^4.1.2"
     write "^0.2.1"
 
-flow-bin@0.66.0:
-  version "0.66.0"
-  resolved "https://registry.yarnpkg.com/flow-bin/-/flow-bin-0.66.0.tgz#a96dde7015dc3343fd552a7b4963c02be705ca26"
+flow-bin@0.68.0:
+  version "0.68.0"
+  resolved "https://registry.yarnpkg.com/flow-bin/-/flow-bin-0.68.0.tgz#86c2d14857d306eb2e85e274f2eebf543564f623"
 
 for-in@^1.0.1:
   version "1.0.2"