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Changing an observed property triggers a re-render of the\n * element.\n *\n *  Import {@linkcode LitElement} and {@linkcode html} from this module to\n * create a component:\n *\n *  ```js\n * import {LitElement, html} from 'lit-element';\n *\n * class MyElement extends LitElement {\n *\n *   // Declare observed properties\n *   static get properties() {\n *     return {\n *       adjective: {}\n *     }\n *   }\n *\n *   constructor() {\n *     this.adjective = 'awesome';\n *   }\n *\n *   // Define the element's template\n *   render() {\n *     return html`<p>your ${adjective} template here</p>`;\n *   }\n * }\n *\n * customElements.define('my-element', MyElement);\n * ```\n *\n * `LitElement` extends {@linkcode ReactiveElement} and adds lit-html\n * templating. The `ReactiveElement` class is provided for users that want to\n * build their own custom element base classes that don't use lit-html.\n *\n * @packageDocumentation\n */\nimport {PropertyValues, ReactiveElement} from '@lit/reactive-element';\nimport {render, RenderOptions, noChange, RootPart} from 'lit-html';\nexport * from '@lit/reactive-element';\nexport * from 'lit-html';\n\nimport {LitUnstable} from 'lit-html';\nimport {ReactiveUnstable} from '@lit/reactive-element';\n\n/**\n * Contains types that are part of the unstable debug API.\n *\n * Everything in this API is not stable and may change or be removed in the future,\n * even on patch releases.\n */\n// eslint-disable-next-line @typescript-eslint/no-namespace\nexport namespace Unstable {\n  /**\n   * When Lit is running in dev mode and `window.emitLitDebugLogEvents` is true,\n   * we will emit 'lit-debug' events to window, with live details about the update and render\n   * lifecycle. These can be useful for writing debug tooling and visualizations.\n   *\n   * Please be aware that running with window.emitLitDebugLogEvents has performance overhead,\n   * making certain operations that are normally very cheap (like a no-op render) much slower,\n   * because we must copy data and dispatch events.\n   */\n  // eslint-disable-next-line @typescript-eslint/no-namespace\n  export namespace DebugLog {\n    export type Entry =\n      | LitUnstable.DebugLog.Entry\n      | ReactiveUnstable.DebugLog.Entry;\n  }\n}\n\n// For backwards compatibility export ReactiveElement as UpdatingElement. Note,\n// IE transpilation requires exporting like this.\nexport const UpdatingElement = ReactiveElement;\n\nconst DEV_MODE = true;\n\nlet issueWarning: (code: string, warning: string) => void;\n\nif (DEV_MODE) {\n  // Ensure warnings are issued only 1x, even if multiple versions of Lit\n  // are loaded.\n  const issuedWarnings: Set<string | undefined> =\n    (globalThis.litIssuedWarnings ??= new Set());\n\n  // Issue a warning, if we haven't already.\n  issueWarning = (code: string, warning: string) => {\n    warning += ` See https://lit.dev/msg/${code} for more information.`;\n    if (!issuedWarnings.has(warning)) {\n      console.warn(warning);\n      issuedWarnings.add(warning);\n    }\n  };\n}\n\n/**\n * Base element class that manages element properties and attributes, and\n * renders a lit-html template.\n *\n * To define a component, subclass `LitElement` and implement a\n * `render` method to provide the component's template. Define properties\n * using the {@linkcode LitElement.properties properties} property or the\n * {@linkcode property} decorator.\n */\nexport class LitElement extends ReactiveElement {\n  /**\n   * Ensure this class is marked as `finalized` as an optimization ensuring\n   * it will not needlessly try to `finalize`.\n   *\n   * Note this property name is a string to prevent breaking Closure JS Compiler\n   * optimizations. See @lit/reactive-element for more information.\n   */\n  protected static override ['finalized'] = true;\n\n  // This property needs to remain unminified.\n  static ['_$litElement$'] = true;\n\n  /**\n   * @category rendering\n   */\n  readonly renderOptions: RenderOptions = {host: this};\n\n  private __childPart: RootPart | undefined = undefined;\n\n  /**\n   * @category rendering\n   */\n  protected override createRenderRoot() {\n    const renderRoot = super.createRenderRoot();\n    // When adoptedStyleSheets are shimmed, they are inserted into the\n    // shadowRoot by createRenderRoot. Adjust the renderBefore node so that\n    // any styles in Lit content render before adoptedStyleSheets. This is\n    // important so that adoptedStyleSheets have precedence over styles in\n    // the shadowRoot.\n    this.renderOptions.renderBefore ??= renderRoot!.firstChild as ChildNode;\n    return renderRoot;\n  }\n\n  /**\n   * Updates the element. This method reflects property values to attributes\n   * and calls `render` to render DOM via lit-html. Setting properties inside\n   * this method will *not* trigger another update.\n   * @param changedProperties Map of changed properties with old values\n   * @category updates\n   */\n  protected override update(changedProperties: PropertyValues) {\n    // Setting properties in `render` should not trigger an update. Since\n    // updates are allowed after super.update, it's important to call `render`\n    // before that.\n    const value = this.render();\n    if (!this.hasUpdated) {\n      this.renderOptions.isConnected = this.isConnected;\n    }\n    super.update(changedProperties);\n    this.__childPart = render(value, this.renderRoot, this.renderOptions);\n  }\n\n  /**\n   * Invoked when the component is added to the document's DOM.\n   *\n   * In `connectedCallback()` you should setup tasks that should only occur when\n   * the element is connected to the document. The most common of these is\n   * adding event listeners to nodes external to the element, like a keydown\n   * event handler added to the window.\n   *\n   * ```ts\n   * connectedCallback() {\n   *   super.connectedCallback();\n   *   addEventListener('keydown', this._handleKeydown);\n   * }\n   * ```\n   *\n   * Typically, anything done in `connectedCallback()` should be undone when the\n   * element is disconnected, in `disconnectedCallback()`.\n   *\n   * @category lifecycle\n   */\n  override connectedCallback() {\n    super.connectedCallback();\n    this.__childPart?.setConnected(true);\n  }\n\n  /**\n   * Invoked when the component is removed from the document's DOM.\n   *\n   * This callback is the main signal to the element that it may no longer be\n   * used. `disconnectedCallback()` should ensure that nothing is holding a\n   * reference to the element (such as event listeners added to nodes external\n   * to the element), so that it is free to be garbage collected.\n   *\n   * ```ts\n   * disconnectedCallback() {\n   *   super.disconnectedCallback();\n   *   window.removeEventListener('keydown', this._handleKeydown);\n   * }\n   * ```\n   *\n   * An element may be re-connected after being disconnected.\n   *\n   * @category lifecycle\n   */\n  override disconnectedCallback() {\n    super.disconnectedCallback();\n    this.__childPart?.setConnected(false);\n  }\n\n  /**\n   * Invoked on each update to perform rendering tasks. This method may return\n   * any value renderable by lit-html's `ChildPart` - typically a\n   * `TemplateResult`. Setting properties inside this method will *not* trigger\n   * the element to update.\n   * @category rendering\n   */\n  protected render(): unknown {\n    return noChange;\n  }\n}\n\n// Install hydration if available\nglobalThis.litElementHydrateSupport?.({LitElement});\n\n// Apply polyfills if available\nconst polyfillSupport = DEV_MODE\n  ? globalThis.litElementPolyfillSupportDevMode\n  : globalThis.litElementPolyfillSupport;\npolyfillSupport?.({LitElement});\n\n// DEV mode warnings\nif (DEV_MODE) {\n  /* eslint-disable @typescript-eslint/no-explicit-any */\n  // Note, for compatibility with closure compilation, this access\n  // needs to be as a string property index.\n  (LitElement as any)['finalize'] = function (this: typeof LitElement) {\n    const finalized = (ReactiveElement as any).finalize.call(this);\n    if (!finalized) {\n      return false;\n    }\n    const warnRemovedOrRenamed = (obj: any, name: string, renamed = false) => {\n      if (obj.hasOwnProperty(name)) {\n        const ctorName = (typeof obj === 'function' ? obj : obj.constructor)\n          .name;\n        issueWarning(\n          renamed ? 'renamed-api' : 'removed-api',\n          `\\`${name}\\` is implemented on class ${ctorName}. It ` +\n            `has been ${renamed ? 'renamed' : 'removed'} ` +\n            `in this version of LitElement.`\n        );\n      }\n    };\n    warnRemovedOrRenamed(this, 'render');\n    warnRemovedOrRenamed(this, 'getStyles', true);\n    warnRemovedOrRenamed((this as typeof LitElement).prototype, 'adoptStyles');\n    return true;\n  };\n  /* eslint-enable @typescript-eslint/no-explicit-any */\n}\n\n/**\n * END USERS SHOULD NOT RELY ON THIS OBJECT.\n *\n * Private exports for use by other Lit packages, not intended for use by\n * external users.\n *\n * We currently do not make a mangled rollup build of the lit-ssr code. In order\n * to keep a number of (otherwise private) top-level exports  mangled in the\n * client side code, we export a _$LE object containing those members (or\n * helper methods for accessing private fields of those members), and then\n * re-export them for use in lit-ssr. This keeps lit-ssr agnostic to whether the\n * client-side code is being used in `dev` mode or `prod` mode.\n *\n * This has a unique name, to disambiguate it from private exports in\n * lit-html, since this module re-exports all of lit-html.\n *\n * @private\n */\nexport const _$LE = {\n  _$attributeToProperty: (\n    el: LitElement,\n    name: string,\n    value: string | null\n  ) => {\n    // eslint-disable-next-line\n    (el as any)._$attributeToProperty(name, value);\n  },\n  // eslint-disable-next-line\n  _$changedProperties: (el: LitElement) => (el as any)._$changedProperties,\n};\n\n// IMPORTANT: do not change the property name or the assignment expression.\n// This line will be used in regexes to search for LitElement usage.\n(globalThis.litElementVersions ??= []).push('3.3.3');\nif (DEV_MODE && globalThis.litElementVersions.length > 1) {\n  issueWarning!(\n    'multiple-versions',\n    `Multiple versions of Lit loaded. Loading multiple versions ` +\n      `is not recommended.`\n  );\n}\n"],"names":["s","_t","_inherits","_super","_createSuper","_this","_classCallCheck","apply","arguments","renderOptions","host","_assertThisInitialized","_$Do","_createClass","key","value","t","e","i","_get","_getPrototypeOf","prototype","call","this","renderBefore","firstChild","render","hasUpdated","isConnected","renderRoot","setConnected","finalized","_$litElement$","l","globalThis","litElementHydrateSupport","LitElement","n","litElementPolyfillSupport","o","litElementVersions","push"],"sourceRoot":""}