Add typings for chromedriver. (#25380)

types/chromedriver/chromedriver-tests.ts

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+import * as chromeDriver from 'chromedriver';
+import { ChildProcess } from 'child_process';
+
+const chromeDriverPath: string = chromeDriver.path;
+const chromeDriverVersion: string = chromeDriver.version;
+
+chromeDriver.start();
+chromeDriver.stop();
+
+const driverProcess: ChildProcess = chromeDriver.start(['a', 'b', 'c']);
+const chromeDriverDefaultInstance: ChildProcess | undefined = chromeDriver.defaultInstance;

types/chromedriver/index.d.ts

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+// Type definitions for chromedriver 2.38
+// Project: https://github.com/giggio/node-chromedriver
+// Definitions by: Peter Safranek <https://github.com/pe8ter>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+/// <reference types="node" />
+
+import { ChildProcess } from 'child_process';
+
+export const path: string;
+export const version: string;
+export function start(args?: ReadonlyArray<string>): ChildProcess;
+export function stop(): void;
+export let defaultInstance: ChildProcess | undefined;

types/chromedriver/tsconfig.json

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

types/chromedriver/tslint.json

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