chore: update flow-typed libdefs (#932)

Summary:
Generated with `flow-typed install --skip --overwrite`.

Test Plan:
`yarn flow` passes.

wchargin-branch: flow-typed-update

flow-typed/npm/enzyme_v3.x.x.js

@@ -1,5 +1,5 @@
-// flow-typed signature: 7be2af8800fdadaea6ac0404d256bafc
-// flow-typed version: 6ce6a0467c/enzyme_v3.x.x/flow_>=v0.53.x
+// flow-typed signature: e50486ad88c5bbfcdfde9fef4fc4c5d1
+// flow-typed version: ab187b275b/enzyme_v3.x.x/flow_>=v0.53.x
 
 import * as React from "react";
 
@@ -53,6 +53,7 @@ declare module "enzyme" {
     prop(key: string): any,
     key(): string,
     simulate(event: string, ...args: Array<any>): this,
+    slice(begin?: number, end?: number): this,
     setState(state: {}, callback?: Function): this,
     setProps(props: {}): this,
     setContext(context: Object): this,

flow-typed/npm/jest_v23.x.x.js

@@ -1,5 +1,5 @@
-// flow-typed signature: f9a2c9a8964707fcb0c42a8e48c82e8d
-// flow-typed version: b2855bf71a/jest_v23.x.x/flow_>=v0.39.x
+// flow-typed signature: 78c200acffbcc16bba9478f5396c3a00
+// flow-typed version: b2980740dd/jest_v23.x.x/flow_>=v0.39.x
 
 type JestMockFn<TArguments: $ReadOnlyArray<*>, TReturn> = {
   (...args: TArguments): TReturn,
@@ -199,16 +199,28 @@ type EnzymeMatchersType = {
   toIncludeText(text: string): void,
   toMatchElement(
     element: React$Element<any>,
-    options?: {| ignoreProps?: boolean |},
+    options?: {| ignoreProps?: boolean, verbose?: boolean |},
   ): void,
-  toMatchSelector(selector: string): void
+  toMatchSelector(selector: string): void,
+  // 7.x
+  toHaveDisplayName(name: string): void,
 };
 
 // DOM testing library extensions https://github.com/kentcdodds/dom-testing-library#custom-jest-matchers
 type DomTestingLibraryType = {
+  toBeDisabled(): void,
+  toBeEmpty(): void,
+  toBeInTheDocument(): void,
+  toBeVisible(): void,
+  toContainElement(element: HTMLElement | null): void,
+  toContainHTML(htmlText: string): void,
+  toHaveAttribute(name: string, expectedValue?: string): void,
+  toHaveClass(...classNames: string[]): void,
+  toHaveFocus(): void,
+  toHaveFormValues(expectedValues: { [name: string]: any }): void,
+  toHaveStyle(css: string): void,
+  toHaveTextContent(content: string | RegExp, options?: { normalizeWhitespace: boolean }): void,
   toBeInTheDOM(): void,
-  toHaveTextContent(content: string): void,
-  toHaveAttribute(name: string, expectedValue?: string): void
 };
 
 // Jest JQuery Matchers: https://github.com/unindented/custom-jquery-matchers
@@ -704,14 +716,14 @@ interface JestExpectType {
   /**
    * This ensures that an Object matches the most recent snapshot.
    */
-  toMatchSnapshot(propertyMatchers?: {[key: string]: JestAsymmetricEqualityType}, name?: string): void,
+  toMatchSnapshot(propertyMatchers?: any, name?: string): void,
   /**
    * This ensures that an Object matches the most recent snapshot.
    */
   toMatchSnapshot(name: string): void,
 
   toMatchInlineSnapshot(snapshot?: string): void,
-  toMatchInlineSnapshot(propertyMatchers?: {[key: string]: JestAsymmetricEqualityType}, snapshot?: string): void,
+  toMatchInlineSnapshot(propertyMatchers?: any, snapshot?: string): void,
   /**
    * Use .toThrow to test that a function throws when it is called.
    * If you want to test that a specific error gets thrown, you can provide an
@@ -937,10 +949,11 @@ declare var describe: {
    * @param {table} table of Test
    */
   each(
-    table: Array<Array<mixed> | mixed>
+    ...table: Array<Array<mixed> | mixed> | [Array<string>, string]
   ): (
     name: JestTestName,
-    fn?: (...args: Array<any>) => ?Promise<mixed>
+    fn?: (...args: Array<any>) => ?Promise<mixed>,
+    timeout?: number
   ) => void,
 };
 
@@ -958,17 +971,7 @@ declare var it: {
     fn?: (done: () => void) => ?Promise<mixed>,
     timeout?: number
   ): void,
-  /**
-   * each runs this test against array of argument arrays per each run
-   *
-   * @param {table} table of Test
-   */
-  each(
-    table: Array<Array<mixed> | mixed>
-  ): (
-    name: JestTestName,
-    fn?: (...args: Array<any>) => ?Promise<mixed>
-  ) => void,
+
   /**
    * Only run this test
    *
@@ -982,12 +985,14 @@ declare var it: {
     timeout?: number
   ): {
     each(
-      table: Array<Array<mixed> | mixed>
+      ...table: Array<Array<mixed> | mixed> | [Array<string>, string]
     ): (
       name: JestTestName,
-      fn?: (...args: Array<any>) => ?Promise<mixed>
+      fn?: (...args: Array<any>) => ?Promise<mixed>,
+      timeout?: number
     ) => void,
   },
+
   /**
    * Skip running this test
    *
@@ -1000,6 +1005,7 @@ declare var it: {
     fn?: (done: () => void) => ?Promise<mixed>,
     timeout?: number
   ): void,
+
   /**
    * Run the test concurrently
    *
@@ -1012,18 +1018,21 @@ declare var it: {
     fn?: (done: () => void) => ?Promise<mixed>,
     timeout?: number
   ): void,
+
   /**
    * each runs this test against array of argument arrays per each run
    *
    * @param {table} table of Test
    */
   each(
-    table: Array<Array<mixed> | mixed>
+    ...table: Array<Array<mixed> | mixed> | [Array<string>, string]
   ): (
     name: JestTestName,
-    fn?: (...args: Array<any>) => ?Promise<mixed>
+    fn?: (...args: Array<any>) => ?Promise<mixed>,
+    timeout?: number
   ) => void,
 };
+
 declare function fit(
   name: JestTestName,
   fn: (done: () => void) => ?Promise<mixed>,

flow-typed/npm/object-assign_v4.x.x.js

@@ -1,6 +1,6 @@
-// flow-typed signature: 6b26bd45f602f11945a41846caafb9a1
-// flow-typed version: da30fe6876/object-assign_v4.x.x/flow_>=v0.25.x
+// flow-typed signature: 0163683fe464be718f5e440cbb72d8b0
+// flow-typed version: 62c71f6105/object-assign_v4.x.x/flow_>=v0.25.x
 
 declare module "object-assign" {
-  declare module.exports: (target: any, ...sources: Array<any>) => Object;
+  declare module.exports: Object$Assign;
 }