chore: update flow

Author: thymikee

.eslintrc.json

@@ -3,6 +3,7 @@
   "rules": {
     "global-require": 0,
     "flowtype/no-weak-types": 0,
-    "strict": [0, "global"]
+    "strict": [0, "global"],
+    "no-unused-vars": ["error", { "argsIgnorePattern": "^_" }]
   }
 }

.travis.yml

@@ -7,7 +7,7 @@ before_install:
 install: yarn --ignore-engines
 before_script: greenkeeper-lockfile-update
 script:
-  - yarn lint && yarn flow && yarn test
+  - yarn lint && yarn typecheck && yarn test
 after_script: greenkeeper-lockfile-upload
 jobs:
   include:

package.json

@@ -9,7 +9,7 @@
   "scripts": {
     "build": "babel src --out-dir build",
     "lint": "eslint . --ext js --cache",
-    "flow": "flow check",
+    "typecheck": "flow check",
     "prepublish": "npm run build",
     "test": "jest",
     "watch": "babel -w src --out-dir build"
@@ -35,7 +35,7 @@
     "enzyme-to-json": "^3.4.0",
     "eslint": "^5.15.3",
     "eslint-config-callstack-io": "^1.1.1",
-    "flow-bin": "^0.102.0",
+    "flow-bin": "^0.111.1",
     "jest": "^24.0.0",
     "react": "^16.7.0",
     "react-dom": "16.7.0",

src/index.js

@@ -41,8 +41,8 @@ const snapshotDiff = (valueA: any, valueB: any, options?: Options): string => {
   if (matchingSerializer) {
     const { print, diffOptions } = matchingSerializer;
     const serializerOptions = diffOptions
-      ? diffOptions(valueA, valueB) || {}
-      : {};
+      ? diffOptions(valueA, valueB) || undefined
+      : undefined;
     difference = diffStrings(print(valueA, identity), print(valueB, identity), {
       ...mergedOptions,
       ...serializerOptions,

src/react-serializer.js

@@ -27,7 +27,7 @@ function getReactComponentSerializer() {
 
 const reactSerializer = {
   test: (value: any) => value && value.$$typeof === reactElement,
-  print: (value: any) => {
+  print: (value: any, _serializer?: any => any) => {
     const reactComponentSerializer = getReactComponentSerializer();
     return reactComponentSerializer(value);
   },

yarn.lock

@@ -2328,10 +2328,10 @@ flatted@^2.0.0:
   resolved "https://registry.yarnpkg.com/flatted/-/flatted-2.0.0.tgz#55122b6536ea496b4b44893ee2608141d10d9916"
   integrity sha512-R+H8IZclI8AAkSBRQJLVOsxwAoHd6WC40b4QTNWIjzAa6BXOBfQcM587MXDTVPeYaopFNWHUFLx7eNmHDSxMWg==
 
-flow-bin@^0.102.0:
-  version "0.102.0"
-  resolved "https://registry.yarnpkg.com/flow-bin/-/flow-bin-0.102.0.tgz#3d5de44bcc26d26585e932b3201988b766f9b380"
-  integrity sha512-mYon6noeLO0Q5SbiWULLQeM1L96iuXnRtYMd47j3bEWXAwUW9EnwNWcn+cZg/jC/Dg4Wj/jnkdTDEuFtbeu1ww==
+flow-bin@^0.111.1:
+  version "0.111.1"
+  resolved "https://registry.yarnpkg.com/flow-bin/-/flow-bin-0.111.1.tgz#bfc1ff91927d0500aa869b0b3a48dd4b060c15c0"
+  integrity sha512-fOFFy4rsvV4zYXUqpNY2bChpzEMYbmumO6DlbcpndbJIHY3W8+UzyiWb8+iRDf2ME1YJgTIvKSJCzHpQ40OBOQ==
 
 for-in@^1.0.2:
   version "1.0.2"