diff --git a/packages/browser-capabilities/.clang-format b/packages/browser-capabilities/.clang-format new file mode 100644 index 000000000..cfe46005b --- /dev/null +++ b/packages/browser-capabilities/.clang-format @@ -0,0 +1,10 @@ +BasedOnStyle: Google +AlignAfterOpenBracket: AlwaysBreak +AllowAllParametersOfDeclarationOnNextLine: false +AllowShortBlocksOnASingleLine: false +AllowShortCaseLabelsOnASingleLine: false +AllowShortFunctionsOnASingleLine: None +AllowShortIfStatementsOnASingleLine: false +AllowShortLoopsOnASingleLine: false +BinPackArguments: false +BinPackParameters: false diff --git a/packages/browser-capabilities/.gitignore b/packages/browser-capabilities/.gitignore new file mode 100644 index 000000000..88edb6288 --- /dev/null +++ b/packages/browser-capabilities/.gitignore @@ -0,0 +1,2 @@ +node_modules/ +lib/ diff --git a/packages/browser-capabilities/.npmignore b/packages/browser-capabilities/.npmignore new file mode 100644 index 000000000..958804368 --- /dev/null +++ b/packages/browser-capabilities/.npmignore @@ -0,0 +1,6 @@ +src/ +test/ + +.clang-format +.travis.yml +tsconfig.json diff --git a/packages/browser-capabilities/.travis.yml b/packages/browser-capabilities/.travis.yml new file mode 100644 index 000000000..b4b7dc3af --- /dev/null +++ b/packages/browser-capabilities/.travis.yml @@ -0,0 +1,6 @@ +language: node_js +node_js: + - "6" + - "node" +script: +- npm test diff --git a/packages/browser-capabilities/CHANGELOG.md b/packages/browser-capabilities/CHANGELOG.md new file mode 100644 index 000000000..b0087ab63 --- /dev/null +++ b/packages/browser-capabilities/CHANGELOG.md @@ -0,0 +1,18 @@ +# Change Log + +## [Unreleased] + +## [0.2.2] - 2018-01-01 +- Add Chrome Headless browser. + +## [0.2.1] - 2017-10-18 +- Remove Firefox from set of browsers with push capability due to https://bugzilla.mozilla.org/show_bug.cgi?id=1409570. + +## [0.2.0] - 2017-08-09 +- Add JavaScript modules capability. + +## [0.1.1] - 2017-08-08 +- Declare TypeScript typings. + +## [0.1.0] - 2017-08-08 +- Initial release. Factored out of https://github.com/Polymer/prpl-server-node/blob/master/src/capabilities.ts diff --git a/packages/browser-capabilities/LICENSE b/packages/browser-capabilities/LICENSE new file mode 100644 index 000000000..6d076be2d --- /dev/null +++ b/packages/browser-capabilities/LICENSE @@ -0,0 +1,5 @@ +Copyright (c) 2017 The Polymer Project Authors. All rights reserved. +This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt +The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt +Code distributed by Google as part of the polymer project is also +subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt diff --git a/packages/browser-capabilities/README.md b/packages/browser-capabilities/README.md new file mode 100644 index 000000000..fc48e2259 --- /dev/null +++ b/packages/browser-capabilities/README.md @@ -0,0 +1,17 @@ +[![Travis Build Status](https://travis-ci.org/Polymer/browser-capabilities.svg?branch=master)](https://travis-ci.org/Polymer/browser-capabilities) +[![Build status](https://ci.appveyor.com/api/projects/status/gn1iuc8qgx8l86yf?svg=true)](https://ci.appveyor.com/project/aomarks/browser-capabilities) +[![NPM version](http://img.shields.io/npm/v/browser-capabilities.svg)](https://www.npmjs.com/package/browser-capabilities) + +# browser-capabilities + +A JavaScript library that detects browser capabilities from a user agent string. + +The following keywords are supported. See [browser-capabilities.ts](https://github.com/Polymer/browser-capabilities/blob/master/src/browser-capabilities.ts) for the latest browser support matrix. + +| Keyword | Description +| :---- | :---- +| es2015 | [ECMAScript 2015 (aka ES6)](https://developers.google.com/web/shows/ttt/series-2/es2015) +| push | [HTTP/2 Server Push](https://developers.google.com/web/fundamentals/performance/http2/#server-push) +| serviceworker | [Service Worker API](https://developers.google.com/web/fundamentals/getting-started/primers/service-workers) +| modules | [JavaScript Modules](https://www.chromestatus.com/feature/5365692190687232) + diff --git a/packages/browser-capabilities/appveyor.yml b/packages/browser-capabilities/appveyor.yml new file mode 100644 index 000000000..d10840b02 --- /dev/null +++ b/packages/browser-capabilities/appveyor.yml @@ -0,0 +1,18 @@ +environment: + matrix: + - nodejs_version: "6" + - nodejs_version: "" + +cache: + - "%LOCALAPPDATA%\\Yarn" + +install: + - ps: 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"git+https://github.com/Polymer/browser-capabilities.git", + "main": "lib/browser-capabilities.js", + "types": "lib/browser-capabilities.d.ts", + "engines": { + "node": ">=6.0" + }, + "author": "The Polymer Project Authors", + "license": "BSD-3-Clause", + "scripts": { + "build": "rm -Rf lib/ && tsc", + "build:watch": "tsc --watch", + "format": "find src -name '*.ts' | xargs clang-format --style=file -i", + "test": "npm run build && mocha", + "test:watch": "watchy -w src -- npm run test" + }, + "devDependencies": { + "@types/chai": "^4.0.2", + "@types/mocha": "^2.2.41", + "chai": "^4.1.1", + "clang-format": "^1.0.53", + "mocha": "^3.5.0", + "source-map-support": "^0.4.15", + "typescript": "^2.4.2", + "watchy": "^0.7.0" + }, + "dependencies": { + "@types/ua-parser-js": "^0.7.31", + "ua-parser-js": "^0.7.15" + } +} diff --git a/packages/browser-capabilities/src/browser-capabilities.ts b/packages/browser-capabilities/src/browser-capabilities.ts new file mode 100644 index 000000000..6deb2ef35 --- /dev/null +++ b/packages/browser-capabilities/src/browser-capabilities.ts @@ -0,0 +1,143 @@ +/** + * @license + * Copyright (c) 2017 The Polymer Project Authors. All rights reserved. + * This code may only be used under the BSD style license found at + * http://polymer.github.io/LICENSE.txt + * The complete set of authors may be found at + * http://polymer.github.io/AUTHORS.txt + * The complete set of contributors may be found at + * http://polymer.github.io/CONTRIBUTORS.txt + * Code distributed by Google as part of the polymer project is also + * subject to an additional IP rights grant found at + * http://polymer.github.io/PATENTS.txt + */ + +import {UAParser} from 'ua-parser-js'; + +/** + * A feature supported by a web browser. + */ +export type BrowserCapability = + // ECMAScript 2015 (aka ES6). + 'es2015'| + // HTTP/2 Server Push. + 'push'| + // Service Worker API. + 'serviceworker'| + // JavaScript modules. + 'modules'; + +// TODO: This should have type UAParser, but its typings are wrong so that +// class can't be referenced as a type. Fix the typings. +export type UserAgentPredicate = (ua: any) => boolean; + +const chrome = { + es2015: since(49), + push: since(41), + serviceworker: since(45), + modules: since(61), +}; + +const browserPredicates: { + [browser: string]: {[key in BrowserCapability]: UserAgentPredicate} +} = { + 'Chrome': chrome, + 'Chromium': chrome, + 'Chrome Headless': chrome, + 'OPR': { + es2015: since(36), + push: since(28), + serviceworker: since(32), + modules: since(48), + }, + 'Vivaldi': { + es2015: since(1), + push: since(1), + serviceworker: since(1), + modules: () => false, + }, + 'Mobile Safari': { + es2015: since(10), + push: since(9, 2), + serviceworker: () => false, + modules: since(10, 3), + }, + 'Safari': { + es2015: since(10), + push: (ua) => { + return versionAtLeast([9], parseVersion(ua.getBrowser().version)) && + // HTTP/2 on desktop Safari requires macOS 10.11 according to + // caniuse.com. + versionAtLeast([10, 11], parseVersion(ua.getOS().version)); + }, + // https://webkit.org/status/#specification-service-workers + serviceworker: () => false, + modules: since(10, 1), + }, + 'Edge': { + // Edge versions before 15.15063 may contain a JIT bug affecting ES6 + // constructors (https://github.com/Microsoft/ChakraCore/issues/1496). + es2015: since(15, 15063), + push: since(12), + // https://developer.microsoft.com/en-us/microsoft-edge/platform/status/serviceworker/ + serviceworker: () => false, + modules: () => false, + }, + 'Firefox': { + es2015: since(51), + // Firefox bug - https://bugzilla.mozilla.org/show_bug.cgi?id=1409570 + push: () => false, + serviceworker: since(44), + modules: () => false, + }, +}; + +/** + * Return the set of capabilities for a user agent string. + */ +export function browserCapabilities(userAgent: string): Set { + const ua = new UAParser(userAgent); + const capabilities = new Set(); + const predicates = browserPredicates[ua.getBrowser().name || ''] || {}; + for (const capability of Object.keys(predicates) as BrowserCapability[]) { + if (predicates[capability](ua)) { + capabilities.add(capability); + } + }; + return capabilities; +} + +/** + * Parse a "x.y.z" version string of any length into integer parts. Returns -1 + * for a part that doesn't parse. + */ +export function parseVersion(version: string): number[] { + return version.split('.').map((part) => { + const i = parseInt(part, 10); + return isNaN(i) ? -1 : i; + }); +} + +/** + * Return whether `version` is at least as high as `atLeast`. + */ +export function versionAtLeast(atLeast: number[], version: number[]): boolean { + for (let i = 0; i < atLeast.length; i++) { + const r = atLeast[i]; + const v = version.length > i ? version[i] : 0; + if (v > r) { + return true; + } + if (v < r) { + return false; + } + } + return true; +} + +/** + * Make a predicate that checks if the browser version is at least this high. + */ +function since(...atLeast: number[]): UserAgentPredicate { + return (ua) => versionAtLeast(atLeast, parseVersion(ua.getBrowser().version)); +} diff --git a/packages/browser-capabilities/src/test/browser-capabilities_test.ts b/packages/browser-capabilities/src/test/browser-capabilities_test.ts new file mode 100644 index 000000000..e16887041 --- /dev/null +++ b/packages/browser-capabilities/src/test/browser-capabilities_test.ts @@ -0,0 +1,76 @@ +/** + * @license + * Copyright (c) 2017 The Polymer Project Authors. All rights reserved. + * This code may only be used under the BSD style license found at + * http://polymer.github.io/LICENSE.txt + * The complete set of authors may be found at + * http://polymer.github.io/AUTHORS.txt + * The complete set of contributors may be found at + * http://polymer.github.io/CONTRIBUTORS.txt + * Code distributed by Google as part of the polymer project is also + * subject to an additional IP rights grant found at + * http://polymer.github.io/PATENTS.txt + */ + +import {assert} from 'chai'; +import * as capabilities from '../browser-capabilities'; + +function assertBrowserCapabilities( + userAgent: string, expect: capabilities.BrowserCapability[]) { + assert.sameMembers([...capabilities.browserCapabilities(userAgent)], expect); +} + +suite('capabilities', function() { + test('unknown browser has no capabilities', () => { + assertBrowserCapabilities('unknown browser', []); + }); + + test('chrome has all the capabilities', () => { + assertBrowserCapabilities( + 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.31 Safari/537.36', + ['es2015', 'push', 'serviceworker', 'modules']); + }); + + test('chrome headless has all the capabilities', () => { + assertBrowserCapabilities( + 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/61.0.3163.31 Safari/537.36', + ['es2015', 'push', 'serviceworker', 'modules']); + }); + + test('edge es2015 support is predicated on minor browser version', () => { + assertBrowserCapabilities( + 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2743.116 Safari/537.36 Edge/15.14986', + ['push']); + assertBrowserCapabilities( + 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2743.116 Safari/537.36 Edge/15.15063', + ['es2015', 'push']); + }); + + test('safari push capability is predicated on macOS version', () => { + assertBrowserCapabilities( + 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10) AppleWebKit/603.1.30 (KHTML, like Gecko) Version/10.1 Safari/603.1.30', + ['es2015', 'modules']); + assertBrowserCapabilities( + 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11) AppleWebKit/603.1.30 (KHTML, like Gecko) Version/10.1 Safari/603.1.30', + ['es2015', 'push', 'modules']); + }); + + test('parseVersion parses with fallback to -1', () => { + assert.deepEqual(capabilities.parseVersion('37'), [37]); + assert.deepEqual(capabilities.parseVersion('10.987.00.1'), [10, 987, 0, 1]); + assert.deepEqual(capabilities.parseVersion('4..foo.7'), [4, -1, -1, 7]); + }); + + test('versionAtLeast checks all required parts', () => { + assert.isTrue(capabilities.versionAtLeast([3, 2, 1], [3, 2, 1])); + assert.isTrue(capabilities.versionAtLeast([3, 2, 1], [3, 2, 1, 4])); + assert.isTrue(capabilities.versionAtLeast([3, 2, 1], [4, 1, 0])); + assert.isTrue(capabilities.versionAtLeast([3, 2, 0], [3, 2])); + assert.isFalse(capabilities.versionAtLeast([3, 2, 1], [2, 2, 1])); + assert.isFalse(capabilities.versionAtLeast([3, 2, 1], [3, 1, 1])); + assert.isFalse(capabilities.versionAtLeast([3, 2, 1], [3, 1, 0])); + assert.isFalse(capabilities.versionAtLeast([3, 2, 1], [3, 2])); + assert.isFalse(capabilities.versionAtLeast([3, 2, 1], [3, 2])); + assert.isFalse(capabilities.versionAtLeast([3, 2, 1], [])); + }); +}); diff --git a/packages/browser-capabilities/test/mocha.opts b/packages/browser-capabilities/test/mocha.opts new file mode 100644 index 000000000..bc12d9c58 --- /dev/null +++ b/packages/browser-capabilities/test/mocha.opts @@ -0,0 +1,3 @@ +--ui tdd +--require source-map-support/register +lib/test/**/*_test.js diff --git a/packages/browser-capabilities/tsconfig.json b/packages/browser-capabilities/tsconfig.json new file mode 100644 index 000000000..b4dc35531 --- /dev/null +++ b/packages/browser-capabilities/tsconfig.json @@ -0,0 +1,21 @@ +{ + "compilerOptions": { + "target": "es6", + "lib": [ + "es2016" + ], + "outDir": "lib", + "module": "commonjs", + "strict": true, + "noUnusedLocals": true, + "noUnusedParameters": true, + "preserveConstEnums": true, + "sourceMap": true, + "pretty": true, + "declaration": true, + "skipLibCheck": true + }, + "include": [ + "src/**/*.ts" + ] +}