chore: prepare to npm publish (microsoft#148)

- setup .npmignore;
- index.js selecting a browser;
- minor package.json tweaks;
- example script which works against npm pack'ed module.

.gitignore

@@ -21,3 +21,4 @@ yarn.lock
 /utils/browser/playwright-web.js
 /index.d.ts
 lib/
+playwright-*.tgz

.npmignore

@@ -1,48 +1,20 @@
-.appveyor.yml
-.gitattributes
+# this ignores everything by default, except for package.json and LICENSE and README.md
+# see https://docs.npmjs.com/misc/developers
+**/*
 
-# no longer generated, but old checkouts might still have it
-node6
+# include sources from lib except for injected, but not map files
+!lib/**/*.js
+# Injected files are included via lib/generated, see src/injected/README.md
+lib/injected/
 
-# exclude all tests
-test
-utils/node6-transform
+# root for "playwright" package
+!index.js
 
-# exclude source files
-src
+# specific browsers
+!chromium.js
+!firefox.js
+!webkit.js
 
-# repeats from .gitignore
-node_modules
-.local-chromium
-.local-browser
-.local-webkit
-.dev_profile*
-.DS_Store
-*.swp
-*.pyc
-.vscode
-package-lock.json
-/node6/test
-/node6/utils
-/test
-/utils
-/docs
-yarn.lock
-
-# other
-/.ci
-/examples
-.appveyour.yml
-.cirrus.yml
-.editorconfig
-.eslintignore
-.eslintrc.js
-.travis.yml
-README.md
-tsconfig.json
-
-# exclude types, see https://github.com/GoogleChrome/puppeteer/issues/3878
-/index.d.ts
-
-# install.js only does stuff for development
-/install.js
+# Dgozman says to remove these
+!DeviceDescriptors.js
+!Errors.js

examples/download-and-verify.js

@@ -0,0 +1,17 @@
+// Copyright (c) Microsoft Corporation.
+// Licensed under the MIT license.
+
+(async () => {
+  const browserName = process.argv[2];
+  const playwright = require('playwright')(browserName);
+
+  console.log('downloading ' + browserName + '...');
+  const revisionInfo = await playwright.downloadBrowser();
+  console.log('downloaded to ' + revisionInfo.folderPath);
+
+  console.log('checking user agent...');
+  const browser = await playwright.launch();
+  const page = await browser.newPage();
+  console.log(await page.evaluate('navigator.userAgent'));
+  await browser.close();
+})()

index.js

@@ -0,0 +1,12 @@
+// Copyright (c) Microsoft Corporation.
+// Licensed under the MIT license.
+
+module.exports = browser => {
+  if (browser === 'chromium')
+    return require('./chromium');
+  if (browser === 'firefox')
+    return require('./firefox');
+  if (browser === 'webkit')
+    return require('./webkit');
+  throw new Error(`Unsupported browser "${browser}"`);
+};

package.json

@@ -1,11 +1,12 @@
 {
   "name": "playwright",
   "version": "0.9.0-post",
-  "description": "A high-level API to control headless Chrome over the DevTools Protocol",
+  "description": "A high-level API to control web browsers",
   "repository": "github:Microsoft/playwright",
   "engines": {
     "node": ">=10.17.0"
   },
+  "main": "index.js",
   "playwright": {
     "chromium_revision": "719491",
     "firefox_revision": "1004",
@@ -18,7 +19,7 @@
     "debug-unit": "node --inspect-brk test/test.js",
     "test-doclint": "node utils/doclint/check_public_api/test/test.js && node utils/doclint/preprocessor/test.js",
     "test": "npm run lint --silent && npm run coverage && npm run test-doclint && npm run test-types && node utils/testrunner/test/test.js",
-    "install": "node install.js",
+    "prepare": "node install.js",
     "lint": "([ \"$CI\" = true ] && eslint --quiet -f codeframe --ext js,ts ./src || eslint --ext js,ts ./src) && npm run tsc && npm run doc",
     "doc": "node utils/doclint/cli.js",
     "coverage": "cross-env COVERAGE=true npm run unit",
@@ -30,8 +31,10 @@
     "test-types": "node utils/doclint/generate_types && npx -p [email protected] tsc -p utils/doclint/generate_types/test/",
     "unit-bundle": "node utils/browser/test.js"
   },
-  "author": "The Chromium Authors",
-  "license": "Apache-2.0",
+  "author": {
+    "name": "Microsoft Corporation"
+  },
+  "license": "MIT",
   "dependencies": {
     "debug": "^4.1.0",
     "extract-zip": "^1.6.6",