We fixed formik :D (microsoft#21660)

weswigham · web-flow · commit c33a14d66d0a · 2018-02-05T17:17:37.000-08:00
diff --git a/tests/baselines/reference/user/chrome-devtools-frontend.log b/tests/baselines/reference/user/chrome-devtools-frontend.log
@@ -12,8 +12,8 @@ Standard output:
 ../../../../built/local/lib.dom.d.ts(9264,13): error TS2300: Duplicate identifier 'Request'.
 ../../../../built/local/lib.dom.d.ts(13522,11): error TS2300: Duplicate identifier 'Window'.
 ../../../../built/local/lib.dom.d.ts(13711,13): error TS2300: Duplicate identifier 'Window'.
-../../../../built/local/lib.es5.d.ts(1321,11): error TS2300: Duplicate identifier 'ArrayLike'.
-../../../../built/local/lib.es5.d.ts(1350,6): error TS2300: Duplicate identifier 'Record'.
+../../../../built/local/lib.es5.d.ts(1328,11): error TS2300: Duplicate identifier 'ArrayLike'.
+../../../../built/local/lib.es5.d.ts(1357,6): error TS2300: Duplicate identifier 'Record'.
 ../../../../node_modules/@types/node/index.d.ts(150,13): error TS2403: Subsequent variable declarations must have the same type.  Variable 'module' must be of type '{ [x: string]: any; }', but here has type 'NodeModule'.
 node_modules/chrome-devtools-frontend/front_end/Runtime.js(43,8): error TS2339: Property '_importScriptPathPrefix' does not exist on type 'Window'.
 node_modules/chrome-devtools-frontend/front_end/Runtime.js(95,28): error TS2339: Property 'response' does not exist on type 'EventTarget'.
diff --git a/tests/baselines/reference/user/formik.log b/tests/baselines/reference/user/formik.log
diff --git a/tests/cases/user/formik/index.tsx b/tests/cases/user/formik/index.tsx
@@ -29,7 +29,7 @@ const Basic = () => (
       }}
       validate={values => {
         // same as above, but feel free to move this into a class method now.
-        let errors: FormikErrors<MyData> = {};
+        let errors: FormikErrors<MyData> = {} as FormikErrors<MyData>; // FormikErrors<MyData> isn't optionalized, so in strict null checks this needs a cast
         if (!values.email) {
           errors.email = 'Required';
         } else if (
