Add cavy types

types/cavy/cavy-tests.tsx

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+import * as React from 'react';
+import { TextInput, View, Text } from 'react-native';
+
+import { hook, TestScope, WithTestHook, Tester } from 'cavy';
+
+type Props = WithTestHook<{
+  foo: string;
+}>;
+
+class SampleComponent extends React.Component<Props> {
+  render() {
+    return (
+      <View ref={this.props.generateTestHook('View.Sample')}>
+        <Text>{this.props.foo}</Text>
+        <TextInput ref={this.props.generateTestHook("Input.Sample")} />
+      </View>
+    );
+  }
+}
+
+const HookedSampleComponent = hook(SampleComponent); // $ExpectType ComponentClass<{ foo: string; }, any>
+
+function sampleSpec(spec: TestScope) {
+  spec.describe('it has a name and callback', () => {
+    spec.it('it has a name and callback', async () => {
+      spec.component.reRender(); // $ExpectType void
+      spec.component.clearAsync(); // $ExpectType Promise<void>
+      spec.findComponent('View.Sample'); // $ExpectType Promise<Component<{}, {}, any>>
+      spec.press('View.Sample'); // $ExpectType Promise<void>
+      spec.fillIn('Input.Sample', "hello world"); // $ExpectType Promise<void>
+      spec.pause(1000); // $ExpectType Promise<void>
+      spec.exists('View.Sample'); // $ExpectType Promise<true>
+      spec.notExists('View.MissingSample'); // $ExpectType Promise<true>
+    });
+  });
+}
+
+<Tester specs={[sampleSpec]} waitTime={42}>
+  <HookedSampleComponent foo="test" />
+</Tester>;

types/cavy/index.d.ts

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+// Type definitions for cavy 0.6
+// Project: https://github.com/pixielabs/cavy
+// Definitions by: Tyler Hoffman <https://github.com/tyler-hoffman>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 3.0
+
+import * as React from 'react';
+
+export {};
+
+type RefCallback = (element: React.ReactNode | null) => void;
+
+export type TestHookGenerator = (label: string, callback?: RefCallback) => RefCallback;
+
+export type WithTestHook<T extends {}> = T & { generateTestHook: TestHookGenerator };
+
+export function hook<T extends {}>(component: React.ComponentClass<WithTestHook<T>>): React.ComponentClass<T>;
+
+export interface TesterProps {
+    specs: Array<(spec: TestScope) => void>;
+    waitTime: number;
+    sendReport?: boolean;
+}
+
+export class Tester extends React.Component<TesterProps> {
+    reRender(): void;
+    clearAsync(): Promise<void>;
+}
+
+export class TestScope {
+    component: Tester;
+    findComponent(identifier: string): Promise<React.Component>;
+    describe(label: string, fn: () => void): void;
+    it(label: string, fn: () => void): void;
+    press(identifier: string): Promise<void>;
+    fillIn(identifier: string, str: string): Promise<void>;
+    pause(time: number): Promise<void>;
+    exists(identifier: string): Promise<true>;
+    notExists(identifier: string): Promise<true>;
+}

types/cavy/tsconfig.json

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+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [
+            "es6"
+        ],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictNullChecks": true,
+        "strictFunctionTypes": true,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "jsx": "react",
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "cavy-tests.tsx"
+    ]
+}

types/cavy/tslint.json

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+{ "extends": "dtslint/dt.json" }