@detector-js/feature/dist/feature.types.d.ts.map

DetectorJS Feature Module

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{ Asserts, CssFlagsClass } from '@detector-js/core';\n\n/**\n *\n *\n * @export\n * @class Feature\n * @extends {CssFlagsClass}\n */\nexport class Feature extends CssFlagsClass {\n  #cssPrefixes: string[];\n  #script: HTMLScriptElement;\n  #canvas: HTMLCanvasElement;\n  #div: HTMLDivElement;\n  #input: HTMLInputElement;\n  #img: HTMLImageElement;\n  #xmlHttpRequest: XMLHttpRequest;\n\n  addEventListener: boolean;\n  asyncScript: boolean;\n  battery: boolean;\n  cors: boolean;\n  deferScript: boolean;\n  file: boolean;\n  fileSystem: boolean;\n  fullscreen: boolean;\n  fullscreenKeyboard: boolean;\n  geolocation: boolean;\n  historyAPI: boolean;\n  littleEndian: boolean;\n  localStorage: boolean;\n  matchMedia: boolean;\n  querySelector: boolean;\n  querySelectorAll: boolean;\n  serviceWorker: boolean;\n  typedArray: boolean;\n  userMedia: boolean;\n  vibration: boolean;\n  worker: boolean;\n\n  /**\n   * Creates an instance of Feature.\n   * @param {any} [ua=null]\n   * @param {any} [flags={}]\n   * @param {string} [cssFlagsPrefix='feature']\n   *\n   * @memberOf Feature\n   */\n  constructor(ua: string | null = null, flags = {}, cssFlagsPrefix = 'feature') {\n    super(ua, flags, cssFlagsPrefix);\n\n    this.#createTestElements();\n\n    this.addEventListener = this.getAddEventListener();\n    this.asyncScript = this.getAsyncScript();\n    this.battery = this.getBattery();\n    this.cors = this.getCors();\n    this.deferScript = this.getDeferScript();\n    this.file = this.getFile();\n    this.fileSystem = this.getFileSystem();\n    this.fullscreen = this.getFullscreen();\n    this.fullscreenKeyboard = this.getFullscreenKeyboard();\n    this.geolocation = this.getGeolocation();\n    this.historyAPI = this.getHistoryAPI();\n    this.littleEndian = this.getLittleEndian();\n    this.localStorage = this.getLocalStorage();\n    this.matchMedia = this.getMatchMedia();\n    this.querySelector = this.getQuerySelector();\n    this.querySelectorAll = this.getQuerySelectorAll();\n    this.serviceWorker = this.getServiceWorker();\n    this.typedArray = this.getTypedArray();\n    this.userMedia = this.getUserMedia();\n    this.vibration = this.getVibration();\n    this.worker = this.getWorker();\n  }\n\n  /**\n   *\n   *\n   * @param {any} prop\n   * @param {any} [prefixes=this.#cssPrefixes]\n   * @returns {string}\n   *\n   * @memberOf Feature\n   */\n  #getCssPrefixedProp(prop, prefixes = this.#cssPrefixes) {\n    prop = prop.toCamelCase();\n\n    const prefixedProps = prefixes.map((item) => {\n      return (item === 'spec' ? '' : '-' + item + '-') + prop;\n    });\n\n    // if ('CSS' in this.root && 'supports' in this.root.CSS) {\n    //   return this.root.CSS.supports(prefixedProps.map(item => '(' + item + ': inherit)').join(' or '));\n    // }\n\n    const prefixedPropsFound = prefixedProps.filter((item) => {\n      return item in this.#div.style;\n    });\n\n    if (prefixedPropsFound.length > 0) {\n      return prefixedPropsFound[0];\n    }\n\n    return null;\n  }\n\n  /**\n   *\n   *\n   * @param {any} prop\n   * @param {any} [prefixes=this.#cssPrefixes]\n   * @returns {string}\n   *\n   * @memberOf Feature\n   */\n  _checkCssPrefixedProp(prop, prefixes = this.#cssPrefixes) {\n    return !!this.#getCssPrefixedProp(prop, prefixes);\n  }\n\n  /**\n   *\n   *\n   * @param {any} prop\n   * @param {any} value\n   * @returns {any}\n   *\n   * @memberOf Feature\n   */\n  _getCssPrefixedPropValue(prop, value) {\n    const prefixedProp = this.#getCssPrefixedProp(prop);\n\n    if (prefixedProp) {\n      this.document.body.insertBefore(this.#div, null);\n\n      this.#div.style[prefixedProp] = value;\n\n      const computedStylePropValue = this.root.getComputedStyle(this.#div).getPropertyValue(prefixedProp);\n\n      this.document.body.removeChild(this.#div);\n\n      if (!!computedStylePropValue && typeof computedStylePropValue === 'string') {\n        return computedStylePropValue;\n      }\n\n      return null;\n    }\n\n    return null;\n  }\n\n  /**\n   *\n   *\n   * @param {any} prop\n   * @param {any} value\n   * @returns {any}\n   *\n   * @memberOf Feature\n   */\n  _checkCssPrefixedPropValue(prop, value) {\n    const prefixedPropValue = this._getCssPrefixedPropValue(prop, value);\n\n    return !!prefixedPropValue && prefixedPropValue !== 'none';\n  }\n\n  /**\n   *\n   *\n   * @memberof Feature\n   */\n  #createTestElements() {\n    this.#cssPrefixes = ['spec', 'webkit', 'moz', 'ms', 'o'];\n\n    this.#script = this.document.createElement('script');\n    this.#canvas = this.document.createElement('canvas');\n    this.#div = this.document.createElement('div');\n    this.#input = this.document.createElement('input');\n    this.#img = this.document.createElement('img');\n    this.#xmlHttpRequest = new this.root.XMLHttpRequest();\n  }\n\n  // /**\n  //  *\n  //  *\n  //  * @memberof Feature\n  //  */\n  // _destroyTestElements() {\n  //   this.#cssPrefixes = null;\n\n  //   this._script = null;\n  //   this._canvas = null;\n  //   this._div = null;\n  //   this._input = null;\n  //   this._img = null;\n  //   this._xmlHttpRequest = null;\n\n  //   delete this.#cssPrefixes;\n\n  //   delete this._script;\n  //   delete this._canvas;\n  //   delete this._div;\n  //   delete this._input;\n  //   delete this._img;\n  //   delete this._xmlHttpRequest;\n  // }\n\n  /**\n   *\n   *\n   * @returns boolean\n   *\n   * @memberOf Feature\n   */\n  getAddEventListener() {\n    return 'addEventListener' in this.root;\n  }\n\n  /**\n   *\n   *\n   * @returns boolean\n   *\n   * @memberOf Feature\n   */\n  getAsyncScript() {\n    return 'async' in this.#script;\n  }\n\n  /**\n   *\n   *\n   * @returns boolean\n   *\n   * @memberOf Feature\n   */\n  getBattery() {\n    return 'battery' in this.navigator;\n  }\n\n  /**\n   *\n   *\n   * @returns boolean\n   *\n   * @memberOf Feature\n   */\n  getCors() {\n    return 'XMLHttpRequest' in this.root && 'withCredentials' in this.#xmlHttpRequest;\n  }\n\n  /**\n   *\n   *\n   * @returns boolean\n   *\n   * @memberOf Feature\n   */\n  getDeferScript() {\n    return 'defer' in this.#script;\n  }\n\n  /**\n   *\n   *\n   * @returns boolean\n   *\n   * @memberOf Feature\n   */\n  getFile() {\n    return Asserts.all(['File' in this.root, 'FileReader' in this.root, 'FileList' in this.root, 'Blob' in this.root]);\n  }\n\n  /**\n   *\n   *\n   * @returns boolean\n   *\n   * @memberOf Feature\n   */\n  getFileSystem() {\n    return 'requestFileSystem' in this.root;\n  }\n\n  /**\n   *\n   *\n   * @returns boolean\n   *\n   * @memberOf Feature\n   */\n  getFullscreen() {\n    return Asserts.one([\n      'requestFullscreen' in this.#canvas,\n      'webkitRequestFullscreen' in this.#canvas,\n      'msRequestFullscreen' in this.#canvas,\n      'mozRequestFullScreen' in this.#canvas\n    ]);\n  }\n\n  /**\n   *\n   *\n   * @returns boolean\n   *\n   * @memberOf Feature\n   */\n  getFullscreenKeyboard() {\n    return Asserts.all([() => 'Element' in this.root && 'ALLOW_KEYBOARD_INPUT' in this.root.Element], true);\n  }\n\n  /**\n   *\n   *\n   * @returns boolean\n   *\n   * @memberOf Feature\n   */\n  getGeolocation() {\n    return 'geolocation' in this.navigator;\n  }\n\n  /**\n   *\n   *\n   * @returns boolean\n   *\n   * @memberOf Feature\n   */\n  getHistoryAPI() {\n    return Asserts.all([() => 'history' in this.root && 'pushState' in this.root.history], true);\n  }\n\n  /**\n   *\n   *\n   * @returns boolean\n   *\n   * @memberOf Feature\n   */\n  getLittleEndian() {\n    return Asserts.all(\n      [this.getTypedArray.bind(this), () => new this.root.Int8Array(new this.root.Int16Array([1]).buffer)[0] > 0],\n      true\n    );\n  }\n\n  /**\n   *\n   *\n   * @returns boolean\n   *\n   * @memberOf Feature\n   */\n  getLocalStorage() {\n    return (\n      Asserts.one([() => 'localStorage' in this.root], true) &&\n      Asserts.one(\n        [\n          () => {\n            const test = 'x';\n            this.root.localStorage.setItem(test, test);\n            this.root.localStorage.removeItem(test);\n\n            return true;\n          }\n        ],\n        true\n      )\n    );\n  }\n\n  /**\n   *\n   *\n   * @returns boolean\n   *\n   * @memberOf Feature\n   */\n  getMatchMedia() {\n    return 'matchMedia' in this.root;\n  }\n\n  /**\n   *\n   *\n   * @returns boolean\n   *\n   * @memberOf Feature\n   */\n  getQuerySelector() {\n    return 'querySelector' in this.document;\n  }\n\n  /**\n   *\n   *\n   * @returns boolean\n   *\n   * @memberOf Feature\n   */\n  getQuerySelectorAll() {\n    return 'querySelectorAll' in this.document;\n  }\n\n  /**\n   *\n   *\n   * @returns boolean\n   *\n   * @memberOf Feature\n   */\n  getServiceWorker() {\n    return 'serviceWorker' in this.navigator;\n  }\n\n  /**\n   *\n   *\n   * @returns boolean\n   *\n   * @memberOf Feature\n   */\n  getTypedArray() {\n    return Asserts.all([() => 'Int8Array' in this.root && typeof this.root.Int8Array !== 'undefined'], true);\n  }\n\n  /**\n   *\n   *\n   * @returns boolean\n   *\n   * @memberOf Feature\n   */\n  getUserMedia() {\n    return Asserts.one([\n      'getUserMedia' in this.navigator,\n      'webkitGetUserMedia' in this.navigator,\n      'mozGetUserMedia' in this.navigator,\n      'msGetUserMedia' in this.navigator\n    ]);\n  }\n\n  /**\n   *\n   *\n   * @returns boolean\n   *\n   * @memberOf Feature\n   */\n  getVibration() {\n    return Asserts.one([\n      'vibrate' in this.navigator,\n      'webkitVibrate' in this.navigator,\n      'mozVibrate' in this.navigator,\n      'msVibrate' in this.navigator\n    ]);\n  }\n\n  /**\n   *\n   *\n   * @returns boolean\n   *\n   * @memberOf Feature\n   */\n  getWorker() {\n    return 'Worker' in this.root;\n  }\n\n  /**\n   *\n   *\n   * @readonly\n   *\n   * @memberOf Feature\n   */\n  get pointerEnabled() {\n    return Asserts.one(['pointerEnabled' in this.navigator, 'msPointerEnabled' in this.navigator]);\n  }\n\n  /**\n   *\n   *\n   * @readonly\n   *\n   * @memberOf Feature\n   */\n  get pixelRatio() {\n    return this.root.devicePixelRatio || 1;\n  }\n\n  /**\n   *\n   *\n   * @readonly\n   *\n   * @memberOf Feature\n   */\n  get pointerLock() {\n    return Asserts.one([\n      'pointerLockElement' in this.document,\n      'webkitPointerLockElement' in this.document,\n      'mozPointerLockElement' in this.document\n    ]);\n  }\n\n  /**\n   *\n   *\n   * @readonly\n   *\n   * @memberOf Feature\n   */\n  get quirksMode() {\n    return this.document.compatMode !== 'CSS1Compat';\n  }\n\n  /**\n   * Test if CSS 3D transforms are supported\n   *\n   * @readonly\n   *\n   * @memberOf Feature\n   */\n  get css3D() {\n    return Asserts.all(\n      [\n        this._checkCssPrefixedPropValue.bind(this, 'transform', 'translate3d(1px,1px,1px)'),\n        this._checkCssPrefixedProp.bind(this, 'perspective')\n      ],\n      true\n    );\n  }\n\n  // Test if CSS transforms are supported\n  /**\n   *\n   *\n   * @readonly\n   *\n   * @memberOf Feature\n   */\n  get cssTransform() {\n    return Asserts.one([this._checkCssPrefixedProp.bind(this, 'transform-origin')], true);\n  }\n\n  // Test if CSS transitions are supported\n  /**\n   *\n   *\n   * @readonly\n   *\n   * @memberOf Feature\n   */\n  get cssTransition() {\n    return Asserts.one([this._checkCssPrefixedProp.bind(this, 'transition')], true);\n  }\n\n  // Test if Device Motion is supported\n  /**\n   *\n   *\n   * @readonly\n   *\n   * @memberOf Feature\n   */\n  get deviceMotion() {\n    return 'DeviceMotionEvent' in this.root;\n  }\n\n  // Test if Device Orientation is supported\n  /**\n   *\n   *\n   * @readonly\n   *\n   * @memberOf Feature\n   */\n  get deviceOrientation() {\n    return 'DeviceOrientationEvent' in this.root;\n  }\n\n  // Test if Context Menu is supported\n  /**\n   *\n   *\n   * @readonly\n   *\n   * @memberOf Feature\n   */\n  get contextMenu() {\n    return Asserts.all(['contextMenu' in this.document, 'HTMLMenuItemElement' in this.root]);\n  }\n\n  // Test if classList API is supported\n  /**\n   *\n   *\n   * @readonly\n   *\n   * @memberOf Feature\n   */\n  get classList() {\n    return 'classList' in this.document;\n  }\n\n  // Test if placeholder attribute is supported\n  /**\n   *\n   *\n   * @readonly\n   *\n   * @memberOf Feature\n   */\n  get placeholder() {\n    return 'placeholder' in this.#input;\n  }\n\n  // Test if viewport units are supported\n  /**\n   *\n   *\n   * @readonly\n   *\n   * @memberOf Feature\n   */\n  get viewportUnit() {\n    return Asserts.all([() => (this.#img.style.width = '1vw') && this.#img.style.width !== ''], true);\n  }\n\n  // Test if REM units are supported\n  /**\n   *\n   *\n   * @readonly\n   *\n   * @memberOf Feature\n   */\n  get remUnit() {\n    return Asserts.all([() => (this.#img.style.width = '1rem') && this.#img.style.width !== ''], true);\n  }\n\n  // Test if Canvas is supported\n  /**\n   *\n   *\n   * @readonly\n   *\n   * @memberOf Feature\n   */\n  get canvas() {\n    return Asserts.all([() => 'getContext' in this.#canvas && !!this.#canvas.getContext('2d')], true);\n  }\n\n  // Test if SVG is supported\n  /**\n   *\n   *\n   * @readonly\n   *\n   * @memberOf Feature\n   */\n  get svg() {\n    return Asserts.all(\n      [\n        () =>\n          'createElementNS' in this.document &&\n          'createSVGRect' in this.document.createElementNS('http://www.w3.org/2000/svg', 'svg')\n      ],\n      true\n    );\n  }\n\n  // Test if WebP is supported\n  /**\n   *\n   *\n   * @readonly\n   *\n   * @memberOf Feature\n   */\n  get webp() {\n    return Asserts.all(\n      [\n        () => {\n          const elem = document.createElement('canvas');\n\n          if (!!(elem.getContext && elem.getContext('2d'))) {\n            // was able or not to get WebP representation\n            return elem.toDataURL('image/webp').indexOf('data:image/webp') === 0;\n          }\n\n          return false;\n        }\n      ],\n      true\n    );\n  }\n\n  // Test if WebGL is supported\n  /**\n   *\n   *\n   * @readonly\n   *\n   * @memberOf Feature\n   */\n  get webGL() {\n    return Asserts.one(\n      [\n        () =>\n          this.canvas &&\n          'WebGLRenderingContext' in this.root &&\n          (this.#canvas.getContext('webgl') || this.#canvas.getContext('experimental-webgl')),\n        () => this.canvas && 'WebGL2RenderingContext' in this.root && this.#canvas.getContext('webgl2')\n      ],\n      true\n    );\n  }\n\n  // Test if WebVR is supported\n  /**\n   *\n   *\n   * @readonly\n   *\n   * @memberOf Feature\n   */\n  get webVR() {\n    return Asserts.all(['getVRDisplays' in this.navigator]);\n  }\n\n  // Tests if touch events are supported, but doesn't necessarily reflect a touchscreen device\n  /**\n   *\n   *\n   * @readonly\n   *\n   * @memberOf Feature\n   */\n  get touch() {\n    return (\n      Asserts.one([() => 'ontouchstart' in this.root, () => 'ontouchstart' in this.document.documentElement], true) &&\n      Asserts.one(\n        [\n          () => 'DocumentTouch' in this.root,\n          () => this.pointerEnabled && 'MSGesture' in this.root,\n          () => 'maxTouchPoints' in this.navigator && this.navigator.maxTouchPoints > 1\n        ],\n        true\n      )\n    );\n  }\n\n  /**\n   *\n   *\n   * @readonly\n   *\n   * @memberOf Feature\n   */\n  get forceTouch() {\n    return Asserts.all(\n      [\n        () =>\n          'MouseEvent' in this.root &&\n          'WEBKIT_FORCE_AT_MOUSE_DOWN' in this.root.MouseEvent &&\n          'WEBKIT_FORCE_AT_FORCE_MOUSE_DOWN' in this.root.MouseEvent\n      ],\n      true\n    );\n  }\n\n  /**\n   *\n   *\n   * @readonly\n   *\n   * @memberOf Feature\n   */\n  get pointerEvents() {\n    return Asserts.all([!!this.root.PointerEvent], true);\n  }\n\n  // Test if img srcset attribute is supported\n  /**\n   *\n   *\n   * @readonly\n   *\n   * @memberOf Feature\n   */\n  get srcset() {\n    return 'srcset' in this.#img;\n  }\n\n  // Test if img sizes attribute is supported\n  /**\n   *\n   *\n   * @readonly\n   *\n   * @memberOf Feature\n   */\n  get sizes() {\n    return 'sizes' in this.#img;\n  }\n\n  // Test if Picture element is supported\n  /**\n   *\n   *\n   * @readonly\n   *\n   * @memberOf Feature\n   */\n  get pictureElement() {\n    return 'HTMLPictureElement' in this.root;\n  }\n\n  // Test if Picture element is supported\n  /**\n   *\n   *\n   * @readonly\n   *\n   * @memberOf Feature\n   */\n  get dialogElement() {\n    return 'HTMLDialogElement' in this.root;\n  }\n}\n\nif (process.env.NODE_ENV === 'development') {\n  const packageJSON = require('../package.json');\n\n  console.log(`${packageJSON.description} v${packageJSON.version} initialized`);\n}\n\nexport * from './audioFeature';\nexport * from './videoFeature';\n"],"names":[],"version":3,"file":"feature.types.d.ts.map"}