{
  "version": 3,
  "sources": ["../src/polyfills/index.ts", "../src/index.ts"],
  "sourcesContent": ["/* eslint @typescript-eslint/no-empty-function: \"off\" */\n\nclass EventTarget {\n  addEventListener() {}\n  removeEventListener() {}\n  dispatchEvent(_event: Event) {\n    return true;\n  }\n}\n\n// @github/template-parts requires DocumentFragment to be available on globalThis for SSR\nif (typeof DocumentFragment === 'undefined') {\n  class DocumentFragment extends EventTarget {}\n  // @ts-ignore\n  globalThis.DocumentFragment = DocumentFragment;\n}\n\nclass HTMLElement extends EventTarget {}\nclass HTMLVideoElement extends EventTarget {}\n\nconst customElements: CustomElementRegistry = {\n  get(_name: string) {\n    return undefined;\n  },\n  define(_name, _constructor, _options) {},\n  getName(_constructor) {\n    return null;\n  },\n  upgrade(_root) {},\n  whenDefined(_name) {\n    return Promise.resolve(HTMLElement as unknown as CustomElementConstructor);\n  },\n};\n\nclass CustomEvent {\n  #detail;\n  get detail() {\n    return this.#detail;\n  }\n  constructor(_typeArg: string, eventInitDict: CustomEventInit = {}) {\n    // super(typeArg, eventInitDict);\n    this.#detail = eventInitDict?.detail;\n  }\n  initCustomEvent() {}\n}\n\nfunction createElement(_tagName: string, _options?: ElementCreationOptions): HTMLElement {\n  return new HTMLElement();\n}\n\nconst globalThisShim = {\n  document: {\n    createElement,\n  },\n  DocumentFragment,\n  customElements,\n  CustomEvent,\n  EventTarget,\n  HTMLElement,\n  HTMLVideoElement,\n};\n\n// const isServer = typeof window === 'undefined' || typeof globalThis.customElements === 'undefined';\n// const GlobalThis = isServer ? globalThisShim : globalThis;\n// const Document = isServer ? globalThisShim.document : globalThis.document;\n//\n// export { GlobalThis as globalThis, Document as document };\nconst isServer = typeof window === 'undefined' || typeof globalThis.customElements === 'undefined';\ntype GlobalThis = typeof globalThis;\nconst internalGlobalThis: GlobalThis = (isServer ? globalThisShim : globalThis) as GlobalThis;\nconst internalDocument: Document = (isServer ? globalThisShim.document : globalThis.document) as Document;\n\nexport { internalGlobalThis as globalThis, internalDocument as document };\n", "import { globalThis } from './polyfills';\n\nexport const subscribeViewerCount = (\n  token: string,\n  pollInterval: number,\n  callback: (views: number) => void,\n  errorCb: (errorMsg: string) => void\n) => {\n  const url = `https://stats.mux.com/counts?token=${token}`;\n  const controller = new AbortController();\n  const signal = controller.signal;\n  let timeoutId: number | undefined;\n  let aborted = false;\n  const fetchViewerCountPoll: () => Promise<any> = () => {\n    // If the polling has been aborted (via an \"unsubscribe()\"),\n    // we can simply bail on the recursion.\n    if (aborted) return Promise.resolve();\n    // GET the latest view count, providing an abort signal\n    // for unsubscription.\n    return (\n      fetch(url, { signal })\n        // Grab the JSON value of the response\n        .then((resp) => resp.json())\n        // Confirm that response wasn't an error and the JSON\n        // has the expected data\n        .then((respObj) => {\n          const views = respObj?.data?.[0]?.views;\n          if (!!respObj?.error || views == null) {\n            // If not, treat as an error.\n            return Promise.reject(respObj?.error ?? 'no data in response');\n          }\n          // Otherwise, we successfully retrieved the latest views, so\n          // provide that info out via `callback()`.\n          callback(views);\n          return views;\n        })\n        // Catch and invoke errorCb before timeout + re-fetch. This allows\n        // for re-fetching by default, but provides the opportunity\n        // to unsubscribe externally via `errorCb` if desired (CJP)\n        .catch(errorCb)\n        // Wait the duration of the polling interval before restarting\n        // the next fetch\n        .then(() => {\n          return new Promise((resolve) => {\n            timeoutId = setTimeout(() => {\n              resolve(undefined);\n            }, pollInterval * 1000);\n          });\n        })\n        // Restart process of re-fetching by invoking this method again\n        // (async recursion)\n        .then(fetchViewerCountPoll)\n    );\n  };\n\n  // Kick off the polling functionality.\n  fetchViewerCountPoll();\n\n  // Return an \"unsubscribe()\" function. Invoking this will abort\n  // any mid-flight fetches, clear any pending timeouts for\n  // a re-fetch, and mark this process as \"aborted\".\n  return () => {\n    aborted = true;\n    controller.abort();\n    if (typeof timeoutId === 'number') {\n      clearTimeout(timeoutId);\n      timeoutId = undefined;\n    }\n  };\n};\n\nconst Attributes = {\n  TOKEN: 'token',\n  POLL_INTERVAL: 'poll-interval',\n  DISABLED: 'disabled',\n};\n\nconst DEFAULT_POLL_INTERVAL = 20;\n\nconst AttributeValues = Object.freeze(Object.values(Attributes));\n\nconst ARIA_LABEL = 'Viewer Count';\nconst DEFAULT_VIEWER_COUNT_VALUE = '??';\nconst toAriaLabel = ({ viewerCount }: { viewerCount?: number }) => {\n  const viewerCountStr = typeof viewerCount === 'number' ? `${viewerCount}` : 'Unknown';\n  return `${ARIA_LABEL} ${viewerCountStr}`;\n};\n\nconst template = document.createElement('template');\ntemplate.innerHTML = `\n<span id=\"viewer-count\">\n${DEFAULT_VIEWER_COUNT_VALUE}\n</span>\n`;\n\nclass MuxActiveViewerCountElement extends globalThis.HTMLElement {\n  static get observedAttributes() {\n    return AttributeValues;\n  }\n\n  #unsubscribeViewerCount: (() => void) | undefined;\n\n  get #viewerCountEl() {\n    return (this.shadowRoot as ShadowRoot).querySelector('#viewer-count') as HTMLElement;\n  }\n\n  #views?: number;\n\n  get views(): number {\n    return this.#views ?? Number.NaN;\n  }\n\n  constructor() {\n    super();\n    const shadowRoot = this.attachShadow({ mode: 'open' });\n    shadowRoot.appendChild(template.content.cloneNode(true));\n  }\n\n  get token() {\n    return this.getAttribute(Attributes.TOKEN) ?? '';\n  }\n\n  set token(value: string) {\n    if (this.token === value) return;\n    this.#views = undefined;\n    this.setAttribute(Attributes.TOKEN, value);\n  }\n\n  get pollInterval() {\n    let temp = this.hasAttribute(Attributes.POLL_INTERVAL)\n      ? +(this.getAttribute(Attributes.POLL_INTERVAL) as string)\n      : DEFAULT_POLL_INTERVAL;\n    if (temp < 15) {\n      console.warn('Poll interval must be at least 15 seconds, setting to 15.');\n      temp = 15;\n    }\n    return temp;\n  }\n\n  set pollInterval(value: number) {\n    if (this.pollInterval === value) return;\n    this.setAttribute(Attributes.POLL_INTERVAL, `${value}`);\n  }\n\n  enable() {\n    this.setAttribute('tabindex', '0');\n  }\n\n  disable() {\n    this.removeAttribute('tabindex');\n  }\n\n  connectedCallback() {\n    if (!this.hasAttribute('disabled')) {\n      this.enable();\n    }\n\n    /** @TODO Update to use `viewerCount` prop when available (CJP) */\n    this.setAttribute('aria-label', toAriaLabel({}));\n    this.setAttribute('role', 'presentation');\n    this.#setupViewerCountPolling();\n  }\n\n  disconnectedCallback() {\n    this.#teardownViewerCountPolling();\n  }\n\n  attributeChangedCallback(attrName: string, oldValue: string | null, newValue: string | null) {\n    if (attrName === Attributes.POLL_INTERVAL || attrName === Attributes.TOKEN) {\n      this.#teardownViewerCountPolling();\n      this.#setupViewerCountPolling();\n    } else if (attrName === Attributes.DISABLED && oldValue !== newValue) {\n      if (newValue) {\n        this.disable();\n      } else {\n        this.enable();\n      }\n    }\n  }\n\n  #setupViewerCountPolling() {\n    if (this.token && this.pollInterval && !this.#unsubscribeViewerCount) {\n      this.#unsubscribeViewerCount = subscribeViewerCount(\n        this.token,\n        this.pollInterval,\n        // Success callback\n        (views) => {\n          this.#views = views;\n          this.dispatchEvent(\n            new CustomEvent('change', {\n              detail: views,\n            })\n          );\n          this.#viewerCountEl.textContent = `${this.views}`;\n          /** @TODO Update to use `viewerCount` prop when available (CJP) */\n          this.setAttribute('aria-label', toAriaLabel({ viewerCount: views }));\n        },\n        // Error callback\n        (errorMsg) => {\n          this.dispatchEvent(\n            new CustomEvent('error', {\n              detail: errorMsg,\n            })\n          );\n          /** @TODO Consider adding retry count/logic (CJP) */\n          console.warn('Failed to retrieve viewer count: Error - ', errorMsg);\n          this.#teardownViewerCountPolling();\n        }\n      );\n    }\n  }\n\n  #teardownViewerCountPolling() {\n    this.#unsubscribeViewerCount?.();\n    this.#unsubscribeViewerCount = undefined;\n  }\n}\n\nif (!globalThis.customElements.get('mux-active-viewer-count')) {\n  globalThis.customElements.define('mux-active-viewer-count', MuxActiveViewerCountElement);\n}\n\nexport default MuxActiveViewerCountElement;\n"],
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}