text: /**
   * @license Angular v12.1.5
   * (c) 2010-2021 Google LLC. https://angular.io/
   * License: MIT
   */
  
  /**
   * An injectable service that produces an animation sequence programmatically within an
   * Angular component or directive.
   * Provided by the `BrowserAnimationsModule` or `NoopAnimationsModule`.
   *
   * @usageNotes
   *
   * To use this service, add it to your component or directive as a dependency.
   * The service is instantiated along with your component.
   *
   * Apps do not typically need to create their own animation players, but if you
   * do need to, follow these steps:
   *
   * 1. Use the `build()` method to create a programmatic animation using the
   * `animate()` function. The method returns an `AnimationFactory` instance.
   *
   * 2. Use the factory object to create an `AnimationPlayer` and attach it to a DOM element.
   *
   * 3. Use the player object to control the animation programmatically.
   *
   * For example:
   *
   * ```ts
   * // import the service from BrowserAnimationsModule
   * import {AnimationBuilder} from '@angular/animations';
   * // require the service as a dependency
   * class MyCmp {
   *   constructor(private _builder: AnimationBuilder) {}
   *
   *   makeAnimation(element: any) {
   *     // first define a reusable animation
   *     const myAnimation = this._builder.build([
   *       style({ width: 0 }),
   *       animate(1000, style({ width: '100px' }))
   *     ]);
   *
   *     // use the returned factory object to create a player
   *     const player = myAnimation.create(element);
   *
   *     player.play();
   *   }
   * }
   * ```
   *
   * @publicApi
   */
  class AnimationBuilder {
  }
  /**
   * A factory object returned from the `AnimationBuilder`.`build()` method.
   *
   * @publicApi
   */
  class AnimationFactory {
  }
  
  /**
   * @license
   * Copyright Google LLC All Rights Reserved.
   *
   * Use of this source code is governed by an MIT-style license that can be
   * found in the LICENSE file at https://angular.io/license
   */
  /**
   * Specifies automatic styling.
   *
   * @publicApi
   */
  const AUTO_STYLE = '*';
  /**
   * Creates a named animation trigger, containing a  list of `state()`
   * and `transition()` entries to be evaluated when the expression
   * bound to the trigger changes.
   *
   * @param name An identifying string.
   * @param definitions  An animation definition object, containing an array of `state()`
   * and `transition()` declarations.
   *
   * @return An object that encapsulates the trigger data.
   *
   * @usageNotes
   * Define an animation trigger in the `animations` section of `@Component` metadata.
   * In the template, reference the trigger by name and bind it to a trigger expression that
   * evaluates to a defined animation state, using the following format:
   *
   * `[@triggerName]="expression"`
   *
   * Animation trigger bindings convert all values to strings, and then match the
   * previous and current values against any linked transitions.
   * Booleans can be specified as `1` or `true` and `0` or `false`.
   *
   * ### Usage Example
   *
   * The following example creates an animation trigger reference based on the provided
   * name value.
   * The provided animation value is expected to be an array consisting of state and
   * transition declarations.
   *
   * ```typescript
   * @Component({
   *   selector: "my-component",
   *   templateUrl: "my-component-tpl.html",
   *   animations: [
   *     trigger("myAnimationTrigger", [
   *       state(...),
   *       state(...),
   *       transition(...),
   *       transition(...)
   *     ])
   *   ]
   * })
   * class MyComponent {
   *   myStatusExp = "something";
   * }
   * ```
   *
   * The template associated with this component makes use of the defined trigger
   * by binding to an element within its template code.
   *
   * ```html
   * <!-- somewhere inside of my-component-tpl.html -->
   * <div [@myAnimationTrigger]="myStatusExp">...</div>
   * ```
   *
   * ### Using an inline function
   * The `transition` animation method also supports reading an inline function which can decide
   * if its associated animation should be run.
   *
   * ```typescript
   * // this method is run each time the `myAnimationTrigger` trigger value changes.
   * function myInlineMatcherFn(fromState: string, toState: string, element: any, params: {[key:
   string]: any}): boolean {
   *   // notice that `element` and `params` are also available here
   *   return toState == 'yes-please-animate';
   * }
   *
   * @Component({
   *   selector: 'my-component',
   *   templateUrl: 'my-component-tpl.html',
   *   animations: [
   *     trigger('myAnimationTrigger', [
   *       transition(myInlineMatcherFn, [
   *         // the animation sequence code
   *       ]),
   *     ])
   *   ]
   * })
   * class MyComponent {
   *   myStatusExp = "yes-please-animate";
   * }
   * ```
   *
   * ### Disabling Animations
   * When true, the special animation control binding `@.disabled` binding prevents
   * all animations from rendering.
   * Place the  `@.disabled` binding on an element to disable
   * animations on the element itself, as well as any inner animation triggers
   * within the element.
   *
   * The following example shows how to use this feature:
   *
   * ```typescript
   * @Component({
   *   selector: 'my-component',
   *   template: `
   *     <div [@.disabled]="isDisabled">
   *       <div [@childAnimation]="exp"></div>
   *     </div>
   *   `,
   *   animations: [
   *     trigger("childAnimation", [
   *       // ...
   *     ])
   *   ]
   * })
   * class MyComponent {
   *   isDisabled = true;
   *   exp = '...';
   * }
   * ```
   *
   * When `@.disabled` is true, it prevents the `@childAnimation` trigger from animating,
   * along with any inner animations.
   *
   * ### Disable animations application-wide
   * When an area of the template is set to have animations disabled,
   * **all** inner components have their animations disabled as well.
   * This means that you can disable all animations for an app
   * by placing a host binding set on `@.disabled` on the topmost Angular component.
   *
   * ```typescript
   * import {Component, HostBinding} from '@angular/core';
   *
   * @Component({
   *   selector: 'app-component',
   *   templateUrl: 'app.component.html',
   * })
   * class AppComponent {
   *   @HostBinding('@.disabled')
   *   public animationsDisabled = true;
   * }
   * ```
   *
   * ### Overriding disablement of inner animations
   * Despite inner animations being disabled, a parent animation can `query()`
   * for inner elements located in disabled areas of the template and still animate
   * them if needed. This is also the case for when a sub animation is
   * queried by a parent and then later animated using `animateChild()`.
   *
   * ### Detecting when an animation is disabled
   * If a region of the DOM (or the entire application) has its animations disabled, the animation
   * trigger callbacks still fire, but for zero seconds. When the callback fires, it provides
   * an instance of an `AnimationEvent`. If animations are disabled,
   * the `.disabled` flag on the event is true.
   *
   * @publicApi
   */
  function trigger(name, definitions) {
      return { type: 7 /* Trigger */, name, definitions, options: {} };
  }
  /**
   * Defines an animation step that combines styling information with timing information.
   *
   * @param timings Sets `AnimateTimings` for the parent animation.
   * A string in the format "duration [delay] [easing]".
   *  - Duration and delay are expressed as a number and optional time unit,
   * such as "1s" or "10ms" for one second and 10 milliseconds, respectively.
   * The default unit is milliseconds.
   *  - The easing value controls how the animation accelerates and decelerates
   * during its runtime. Value is one of  `ease`, `ease-in`, `ease-out`,
   * `ease-in-out`, or a `cubic-bezier()` function call.
   * If not supplied, no easing is applied.
   *
   * For example, the string "1s 100ms ease-out" specifies a duration of
   * 1000 milliseconds, and delay of 100 ms, and the "ease-out" easing style,
   * which decelerates near the end of the duration.
   * @param styles Sets AnimationStyles for the parent animation.
   * A function call to either `style()` or `keyframes()`
   * that returns a collection of CSS style entries to be applied to the parent animation.
   * When null, uses the styles from the destination state.
   * This is useful when describing an animation step that will complete an animation;
   * see "Animating to the final state" in `transitions()`.
   * @returns An object that encapsulates the animation step.
   *
   * @usageNotes
   * Call within an animation `sequence()`, `{@link animations/group group()}`, or
   * `transition()` call to specify an animation step
   * that applies given style data to the parent animation for a given amount of time.
   *
   * ### Syntax Examples
   * **Timing examples**
   *
   * The following examples show various `timings` specifications.
   * - `animate(500)` : Duration is 500 milliseconds.
   * - `animate("1s")` : Duration is 1000 milliseconds.
   * - `animate("100ms 0.5s")` : Duration is 100 milliseconds, delay is 500 milliseconds.
   * - `animate("5s ease-in")` : Duration is 5000 milliseconds, easing in.
   * - `animate("5s 10ms cubic-bezier(.17,.67,.88,.1)")` : Duration is 5000 milliseconds, delay is 10
   * milliseconds, easing according to a bezier curve.
   *
   * **Style examples**
   *
   * The following example calls `style()` to set a single CSS style.
   * ```typescript
   * animate(500, style({ background: "red" }))
   * ```
   * The following example calls `keyframes()` to set a CSS style
   * to different values for successive keyframes.
   * ```typescript
   * animate(500, keyframes(
   *  [
   *   style({ background: "blue" }),
   *   style({ background: "red" })
   *  ])
   * ```
   *
   * @publicApi
   */
  function animate(timings, styles = null) {
      return { type: 4 /* Animate */, styles, timings };
  }
  /**
   * @description Defines a list of animation steps to be run in parallel.
   *
   * @param steps An array of animation step objects.
   * - When steps are defined by `style()` or `animate()`
   * function calls, each call within the group is executed instantly.
   * - To specify offset styles to be applied at a later time, define steps with
   * `keyframes()`, or use `animate()` calls with a delay value.
   * For example:
   *
   * ```typescript
   * group([
   *   animate("1s", style({ background: "black" })),
   *   animate("2s", style({ color: "white" }))
   * ])
   * ```
   *
   * @param options An options object containing a delay and
   * developer-defined parameters that provide styling defaults and
   * can be overridden on invocation.
   *
   * @return An object that encapsulates the group data.
   *
   * @usageNotes
   * Grouped animations are useful when a series of styles must be
   * animated at different starting times and closed off at different ending times.
   *
   * When called within a `sequence()` or a
   * `transition()` call, does not continue to the next
   * instruction until all of the inner animation steps have completed.
   *
   * @publicApi
   */
  function group(steps, options = null) {
      return { type: 3 /* Group */, steps, options };
  }
  /**
   * Defines a list of animation steps to be run sequentially, one by one.
   *
   * @param steps An array of animation step objects.
   * - Steps defined by `style()` calls apply the styling data immediately.
   * - Steps defined by `animate()` calls apply the styling data over time
   *   as specified by the timing data.
   *
   * ```typescript
   * sequence([
   *   style({ opacity: 0 }),
   *   animate("1s", style({ opacity: 1 }))
   * ])
   * ```
   *
   * @param options An options object containing a delay and
   * developer-defined parameters that provide styling defaults and
   * can be overridden on invocation.
   *
   * @return An object that encapsulates the sequence data.
   *
   * @usageNotes
   * When you pass an array of steps to a
   * `transition()` call, the steps run sequentially by default.
   * Compare this to the `{@link animations/group group()}` call, which runs animation steps in
   *parallel.
   *
   * When a sequence is used within a `{@link animations/group group()}` or a `transition()` call,
   * execution continues to the next instruction only after each of the inner animation
   * steps have completed.
   *
   * @publicApi
   **/
  function sequence(steps, options = null) {
      return { type: 2 /* Sequence */, steps, options };
  }
  /**
   * Declares a key/value object containing CSS properties/styles that
   * can then be used for an animation `state`, within an animation `sequence`,
   * or as styling data for calls to `animate()` and `keyframes()`.
   *
   * @param tokens A set of CSS styles or HTML styles associated with an animation state.
   * The value can be any of the following:
   * - A key-value style pair associating a CSS property with a value.
   * - An array of key-value style pairs.
   * - An asterisk (*), to use auto-styling, where styles are derived from the element
   * being animated and applied to the animation when it starts.
   *
   * Auto-styling can be used to define a state that depends on layout or other
   * environmental factors.
   *
   * @return An object that encapsulates the style data.
   *
   * @usageNotes
   * The following examples create animation styles that collect a set of
   * CSS property values:
   *
   * ```typescript
   * // string values for CSS properties
   * style({ background: "red", color: "blue" })
   *
   * // numerical pixel values
   * style({ width: 100, height: 0 })
   * ```
   *
   * The following example uses auto-styling to allow a component to animate from
   * a height of 0 up to the height of the parent element:
   *
   * ```
   * style({ height: 0 }),
   * animate("1s", style({ height: "*" }))
   * ```
   *
   * @publicApi
   **/
  function style(tokens) {
      return { type: 6 /* Style */, styles: tokens, offset: null };
  }
  /**
   * Declares an animation state within a trigger attached to an element.
   *
   * @param name One or more names for the defined state in a comma-separated string.
   * The following reserved state names can be supplied to define a style for specific use
   * cases:
   *
   * - `void` You can associate styles with this name to be used when
   * the element is detached from the application. For example, when an `ngIf` evaluates
   * to false, the state of the associated element is void.
   *  - `*` (asterisk) Indicates the default state. You can associate styles with this name
   * to be used as the fallback when the state that is being animated is not declared
   * within the trigger.
   *
   * @param styles A set of CSS styles associated with this state, created using the
   * `style()` function.
   * This set of styles persists on the element once the state has been reached.
   * @param options Parameters that can be passed to the state when it is invoked.
   * 0 or more key-value pairs.
   * @return An object that encapsulates the new state data.
   *
   * @usageNotes
   * Use the `trigger()` function to register states to an animation trigger.
   * Use the `transition()` function to animate between states.
   * When a state is active within a component, its associated styles persist on the element,
   * even when the animation ends.
   *
   * @publicApi
   **/
  function state(name, styles, options) {
      return { type: 0 /* State */, name, styles, options };
  }
  /**
   * Defines a set of animation styles, associating each style with an optional `offset` value.
   *
   * @param steps A set of animation styles with optional offset data.
   * The optional `offset` value for a style specifies a percentage of the total animation
   * time at which that style is applied.
   * @returns An object that encapsulates the keyframes data.
   *
   * @usageNotes
   * Use with the `animate()` call. Instead of applying animations
   * from the current state
   * to the destination state, keyframes describe how each style entry is applied and at what point
   * within the animation arc.
   * Compare [CSS Keyframe Animations](https://www.w3schools.com/css/css3_animations.asp).
   *
   * ### Usage
   *
   * In the following example, the offset values describe
   * when each `backgroundColor` value is applied. The color is red at the start, and changes to
   * blue when 20% of the total time has elapsed.
   *
   * ```typescript
   * // the provided offset values
   * animate("5s", keyframes([
   *   style({ backgroundColor: "red", offset: 0 }),
   *   style({ backgroundColor: "blue", offset: 0.2 }),
   *   style({ backgroundColor: "orange", offset: 0.3 }),
   *   style({ backgroundColor: "black", offset: 1 })
   * ]))
   * ```
   *
   * If there are no `offset` values specified in the style entries, the offsets
   * are calculated automatically.
   *
   * ```typescript
   * animate("5s", keyframes([
   *   style({ backgroundColor: "red" }) // offset = 0
   *   style({ backgroundColor: "blue" }) // offset = 0.33
   *   style({ backgroundColor: "orange" }) // offset = 0.66
   *   style({ backgroundColor: "black" }) // offset = 1
   * ]))
   *```
  
   * @publicApi
   */
  function keyframes(steps) {
      return { type: 5 /* Keyframes */, steps };
  }
  /**
   * Declares an animation transition as a sequence of animation steps to run when a given
   * condition is satisfied. The condition is a Boolean expression or function that compares
   * the previous and current animation states, and returns true if this transition should occur.
   * When the state criteria of a defined transition are met, the associated animation is
   * triggered.
   *
   * @param stateChangeExpr A Boolean expression or function that compares the previous and current
   * animation states, and returns true if this transition should occur. Note that  "true" and "false"
   * match 1 and 0, respectively. An expression is evaluated each time a state change occurs in the
   * animation trigger element.
   * The animation steps run when the expression evaluates to true.
   *
   * - A state-change string takes the form "state1 => state2", where each side is a defined animation
   * state, or an asterix (*) to refer to a dynamic start or end state.
   *   - The expression string can contain multiple comma-separated statements;
   * for example "state1 => state2, state3 => state4".
   *   - Special values `:enter` and `:leave` initiate a transition on the entry and exit states,
   * equivalent to  "void => *"  and "* => void".
   *   - Special values `:increment` and `:decrement` initiate a transition when a numeric value has
   * increased or decreased in value.
   * - A function is executed each time a state change occurs in the animation trigger element.
   * The animation steps run when the function returns true.
   *
   * @param steps One or more animation objects, as returned by the `animate()` or
   * `sequence()` function, that form a transformation from one state to another.
   * A sequence is used by default when you pass an array.
   * @param options An options object that can contain a delay value for the start of the animation,
   * and additional developer-defined parameters. Provided values for additional parameters are used
   * as defaults, and override values can be passed to the caller on invocation.
   * @returns An object that encapsulates the transition data.
   *
   * @usageNotes
   * The template associated with a component binds an animation trigger to an element.
   *
   * ```HTML
   * <!-- somewhere inside of my-component-tpl.html -->
   * <div [@myAnimationTrigger]="myStatusExp">...</div>
   * ```
   *
   * All transitions are defined within an animation trigger,
   * along with named states that the transitions change to and from.
   *
   * ```typescript
   * trigger("myAnimationTrigger", [
   *  // define states
   *  state("on", style({ background: "green" })),
   *  state("off", style({ background: "grey" })),
   *  ...]
   * ```
   *
   * Note that when you call the `sequence()` function within a `{@link animations/group group()}`
   * or a `transition()` call, execution does not continue to the next instruction
   * until each of the inner animation steps have completed.
   *
   * ### Syntax examples
   *
   * The following examples define transitions between the two defined states (and default states),
   * using various options:
   *
   * ```typescript
   * // Transition occurs when the state value
   * // bound to "myAnimationTrigger" changes from "on" to "off"
   * transition("on => off", animate(500))
   * // Run the same animation for both directions
   * transition("on <=> off", animate(500))
   * // Define multiple state-change pairs separated by commas
   * transition("on => off, off => void", animate(500))
   * ```
   *
   * ### Special values for state-change expressions
   *
   * - Catch-all state change for when an element is inserted into the page and the
   * destination state is unknown:
   *
   * ```typescript
   * transition("void => *", [
   *  style({ opacity: 0 }),
   *  animate(500)
   *  ])
   * ```
   *
   * - Capture a state change between any states:
   *
   *  `transition("* => *", animate("1s 0s"))`
   *
   * - Entry and exit transitions:
   *
   * ```typescript
   * transition(":enter", [
   *   style({ opacity: 0 }),
   *   animate(500, style({ opacity: 1 }))
   *   ]),
   * transition(":leave", [
   *   animate(500, style({ opacity: 0 }))
   *   ])
   * ```
   *
   * - Use `:increment` and `:decrement` to initiate transitions:
   *
   * ```typescript
   * transition(":increment", group([
   *  query(':enter', [
   *     style({ left: '100%' }),
   *     animate('0.5s ease-out', style('*'))
   *   ]),
   *  query(':leave', [
   *     animate('0.5s ease-out', style({ left: '-100%' }))
   *  ])
   * ]))
   *
   * transition(":decrement", group([
   *  query(':enter', [
   *     style({ left: '100%' }),
   *     animate('0.5s ease-out', style('*'))
   *   ]),
   *  query(':leave', [
   *     animate('0.5s ease-out', style({ left: '-100%' }))
   *  ])
   * ]))
   * ```
   *
   * ### State-change functions
   *
   * Here is an example of a `fromState` specified as a state-change function that invokes an
   * animation when true:
   *
   * ```typescript
   * transition((fromState, toState) =>
   *  {
   *   return fromState == "off" && toState == "on";
   *  },
   *  animate("1s 0s"))
   * ```
   *
   * ### Animating to the final state
   *
   * If the final step in a transition is a call to `animate()` that uses a timing value
   * with no style data, that step is automatically considered the final animation arc,
   * for the element to reach the final state. Angular automatically adds or removes
   * CSS styles to ensure that the element is in the correct final state.
   *
   * The following example defines a transition that starts by hiding the element,
   * then makes sure that it animates properly to whatever state is currently active for trigger:
   *
   * ```typescript
   * transition("void => *", [
   *   style({ opacity: 0 }),
   *   animate(500)
   *  ])
   * ```
   * ### Boolean value matching
   * If a trigger binding value is a Boolean, it can be matched using a transition expression
   * that compares true and false or 1 and 0. For example:
   *
   * ```
   * // in the template
   * <div [@openClose]="open ? true : false">...</div>
   * // in the component metadata
   * trigger('openClose', [
   *   state('true', style({ height: '*' })),
   *   state('false', style({ height: '0px' })),
   *   transition('false <=> true', animate(500))
   * ])
   * ```
   *
   * @publicApi
   **/
  function transition(stateChangeExpr, steps, options = null) {
      return { type: 1 /* Transition */, expr: stateChangeExpr, animation: steps, options };
  }
  /**
   * Produces a reusable animation that can be invoked in another animation or sequence,
   * by calling the `useAnimation()` function.
   *
   * @param steps One or more animation objects, as returned by the `animate()`
   * or `sequence()` function, that form a transformation from one state to another.
   * A sequence is used by default when you pass an array.
   * @param options An options object that can contain a delay value for the start of the
   * animation, and additional developer-defined parameters.
   * Provided values for additional parameters are used as defaults,
   * and override values can be passed to the caller on invocation.
   * @returns An object that encapsulates the animation data.
   *
   * @usageNotes
   * The following example defines a reusable animation, providing some default parameter
   * values.
   *
   * ```typescript
   * var fadeAnimation = animation([
   *   style({ opacity: '{{ start }}' }),
   *   animate('{{ time }}',
   *   style({ opacity: '{{ end }}'}))
   *   ],
   *   { params: { time: '1000ms', start: 0, end: 1 }});
   * ```
   *
   * The following invokes the defined animation with a call to `useAnimation()`,
   * passing in override parameter values.
   *
   * ```js
   * useAnimation(fadeAnimation, {
   *   params: {
   *     time: '2s',
   *     start: 1,
   *     end: 0
   *   }
   * })
   * ```
   *
   * If any of the passed-in parameter values are missing from this call,
   * the default values are used. If one or more parameter values are missing before a step is
   * animated, `useAnimation()` throws an error.
   *
   * @publicApi
   */
  function animation(steps, options = null) {
      return { type: 8 /* Reference */, animation: steps, options };
  }
  /**
   * Executes a queried inner animation element within an animation sequence.
   *
   * @param options An options object that can contain a delay value for the start of the
   * animation, and additional override values for developer-defined parameters.
   * @return An object that encapsulates the child animation data.
   *
   * @usageNotes
   * Each time an animation is triggered in Angular, the parent animation
   * has priority and any child animations are blocked. In order
   * for a child animation to run, the parent animation must query each of the elements
   * containing child animations, and run them using this function.
   *
   * Note that this feature is designed to be used with `query()` and it will only work
   * with animations that are assigned using the Angular animation library. CSS keyframes
   * and transitions are not handled by this API.
   *
   * @publicApi
   */
  function animateChild(options = null) {
      return { type: 9 /* AnimateChild */, options };
  }
  /**
   * Starts a reusable animation that is created using the `animation()` function.
   *
   * @param animation The reusable animation to start.
   * @param options An options object that can contain a delay value for the start of
   * the animation, and additional override values for developer-defined parameters.
   * @return An object that contains the animation parameters.
   *
   * @publicApi
   */
  function useAnimation(animation, options = null) {
      return { type: 10 /* AnimateRef */, animation, options };
  }
  /**
   * Finds one or more inner elements within the current element that is
   * being animated within a sequence. Use with `animate()`.
   *
   * @param selector The element to query, or a set of elements that contain Angular-specific
   * characteristics, specified with one or more of the following tokens.
   *  - `query(":enter")` or `query(":leave")` : Query for newly inserted/removed elements.
   *  - `query(":animating")` : Query all currently animating elements.
   *  - `query("@triggerName")` : Query elements that contain an animation trigger.
   *  - `query("@*")` : Query all elements that contain an animation triggers.
   *  - `query(":self")` : Include the current element into the animation sequence.
   *
   * @param animation One or more animation steps to apply to the queried element or elements.
   * An array is treated as an animation sequence.
   * @param options An options object. Use the 'limit' field to limit the total number of
   * items to collect.
   * @return An object that encapsulates the query data.
   *
   * @usageNotes
   * Tokens can be merged into a combined query selector string. For example:
   *
   * ```typescript
   *  query(':self, .record:enter, .record:leave, @subTrigger', [...])
   * ```
   *
   * The `query()` function collects multiple elements and works internally by using
   * `element.querySelectorAll`. Use the `limit` field of an options object to limit
   * the total number of items to be collected. For example:
   *
   * ```js
   * query('div', [
   *   animate(...),
   *   animate(...)
   * ], { limit: 1 })
   * ```
   *
   * By default, throws an error when zero items are found. Set the
   * `optional` flag to ignore this error. For example:
   *
   * ```js
   * query('.some-element-that-may-not-be-there', [
   *   animate(...),
   *   animate(...)
   * ], { optional: true })
   * ```
   *
   * ### Usage Example
   *
   * The following example queries for inner elements and animates them
   * individually using `animate()`.
   *
   * ```typescript
   * @Component({
   *   selector: 'inner',
   *   template: `
   *     <div [@queryAnimation]="exp">
   *       <h1>Title</h1>
   *       <div class="content">
   *         Blah blah blah
   *       </div>
   *     </div>
   *   `,
   *   animations: [
   *    trigger('queryAnimation', [
   *      transition('* => goAnimate', [
   *        // hide the inner elements
   *        query('h1', style({ opacity: 0 })),
   *        query('.content', style({ opacity: 0 })),
   *
   *        // animate the inner elements in, one by one
   *        query('h1', animate(1000, style({ opacity: 1 }))),
   *        query('.content', animate(1000, style({ opacity: 1 }))),
   *      ])
   *    ])
   *  ]
   * })
   * class Cmp {
   *   exp = '';
   *
   *   goAnimate() {
   *     this.exp = 'goAnimate';
   *   }
   * }
   * ```
   *
   * @publicApi
   */
  function query(selector, animation, options = null) {
      return { type: 11 /* Query */, selector, animation, options };
  }
  /**
   * Use within an animation `query()` call to issue a timing gap after
   * each queried item is animated.
   *
   * @param timings A delay value.
   * @param animation One ore more animation steps.
   * @returns An object that encapsulates the stagger data.
   *
   * @usageNotes
   * In the following example, a container element wraps a list of items stamped out
   * by an `ngFor`. The container element contains an animation trigger that will later be set
   * to query for each of the inner items.
   *
   * Each time items are added, the opacity fade-in animation runs,
   * and each removed item is faded out.
   * When either of these animations occur, the stagger effect is
   * applied after each item's animation is started.
   *
   * ```html
   * <!-- list.component.html -->
   * <button (click)="toggle()">Show / Hide Items</button>
   * <hr />
   * <div [@listAnimation]="items.length">
   *   <div *ngFor="let item of items">
   *     {{ item }}
   *   </div>
   * </div>
   * ```
   *
   * Here is the component code:
   *
   * ```typescript
   * import {trigger, transition, style, animate, query, stagger} from '@angular/animations';
   * @Component({
   *   templateUrl: 'list.component.html',
   *   animations: [
   *     trigger('listAnimation', [
   *     ...
   *     ])
   *   ]
   * })
   * class ListComponent {
   *   items = [];
   *
   *   showItems() {
   *     this.items = [0,1,2,3,4];
   *   }
   *
   *   hideItems() {
   *     this.items = [];
   *   }
   *
   *   toggle() {
   *     this.items.length ? this.hideItems() : this.showItems();
   *    }
   *  }
   * ```
   *
   * Here is the animation trigger code:
   *
   * ```typescript
   * trigger('listAnimation', [
   *   transition('* => *', [ // each time the binding value changes
   *     query(':leave', [
   *       stagger(100, [
   *         animate('0.5s', style({ opacity: 0 }))
   *       ])
   *     ]),
   *     query(':enter', [
   *       style({ opacity: 0 }),
   *       stagger(100, [
   *         animate('0.5s', style({ opacity: 1 }))
   *       ])
   *     ])
   *   ])
   * ])
   * ```
   *
   * @publicApi
   */
  function stagger(timings, animation) {
      return { type: 12 /* Stagger */, timings, animation };
  }
  
  /**
   * @license
   * Copyright Google LLC All Rights Reserved.
   *
   * Use of this source code is governed by an MIT-style license that can be
   * found in the LICENSE file at https://angular.io/license
   */
  function scheduleMicroTask(cb) {
      Promise.resolve(null).then(cb);
  }
  
  /**
   * @license
   * Copyright Google LLC All Rights Reserved.
   *
   * Use of this source code is governed by an MIT-style license that can be
   * found in the LICENSE file at https://angular.io/license
   */
  /**
   * An empty programmatic controller for reusable animations.
   * Used internally when animations are disabled, to avoid
   * checking for the null case when an animation player is expected.
   *
   * @see `animate()`
   * @see `AnimationPlayer`
   * @see `GroupPlayer`
   *
   * @publicApi
   */
  class NoopAnimationPlayer {
      constructor(duration = 0, delay = 0) {
          this._onDoneFns = [];
          this._onStartFns = [];
          this._onDestroyFns = [];
          this._started = false;
          this._destroyed = false;
          this._finished = false;
          this._position = 0;
          this.parentPlayer = null;
          this.totalTime = duration + delay;
      }
      _onFinish() {
          if (!this._finished) {
              this._finished = true;
              this._onDoneFns.forEach(fn => fn());
              this._onDoneFns = [];
          }
      }
      onStart(fn) {
          this._onStartFns.push(fn);
      }
      onDone(fn) {
          this._onDoneFns.push(fn);
      }
      onDestroy(fn) {
          this._onDestroyFns.push(fn);
      }
      hasStarted() {
          return this._started;
      }
      init() { }
      play() {
          if (!this.hasStarted()) {
              this._onStart();
              this.triggerMicrotask();
          }
          this._started = true;
      }
      /** @internal */
      triggerMicrotask() {
          scheduleMicroTask(() => this._onFinish());
      }
      _onStart() {
          this._onStartFns.forEach(fn => fn());
          this._onStartFns = [];
      }
      pause() { }
      restart() { }
      finish() {
          this._onFinish();
      }
      destroy() {
          if (!this._destroyed) {
              this._destroyed = true;
              if (!this.hasStarted()) {
                  this._onStart();
              }
              this.finish();
              this._onDestroyFns.forEach(fn => fn());
              this._onDestroyFns = [];
          }
      }
      reset() {
          this._started = false;
      }
      setPosition(position) {
          this._position = this.totalTime ? position * this.totalTime : 1;
      }
      getPosition() {
          return this.totalTime ? this._position / this.totalTime : 1;
      }
      /** @internal */
      triggerCallback(phaseName) {
          const methods = phaseName == 'start' ? this._onStartFns : this._onDoneFns;
          methods.forEach(fn => fn());
          methods.length = 0;
      }
  }
  
  /**
   * @license
   * Copyright Google LLC All Rights Reserved.
   *
   * Use of this source code is governed by an MIT-style license that can be
   * found in the LICENSE file at https://angular.io/license
   */
  /**
   * A programmatic controller for a group of reusable animations.
   * Used internally to control animations.
   *
   * @see `AnimationPlayer`
   * @see `{@link animations/group group()}`
   *
   */
  class AnimationGroupPlayer {
      constructor(_players) {
          this._onDoneFns = [];
          this._onStartFns = [];
          this._finished = false;
          this._started = false;
          this._destroyed = false;
          this._onDestroyFns = [];
          this.parentPlayer = null;
          this.totalTime = 0;
          this.players = _players;
          let doneCount = 0;
          let destroyCount = 0;
          let startCount = 0;
          const total = this.players.length;
          if (total == 0) {
              scheduleMicroTask(() => this._onFinish());
          }
          else {
              this.players.forEach(player => {
                  player.onDone(() => {
                      if (++doneCount == total) {
                          this._onFinish();
                      }
                  });
                  player.onDestroy(() => {
                      if (++destroyCount == total) {
                          this._onDestroy();
                      }
                  });
                  player.onStart(() => {
                      if (++startCount == total) {
                          this._onStart();
                      }
                  });
              });
          }
          this.totalTime = this.players.reduce((time, player) => Math.max(time, player.totalTime), 0);
      }
      _onFinish() {
          if (!this._finished) {
              this._finished = true;
              this._onDoneFns.forEach(fn => fn());
              this._onDoneFns = [];
          }
      }
      init() {
          this.players.forEach(player => player.init());
      }
      onStart(fn) {
          this._onStartFns.push(fn);
      }
      _onStart() {
          if (!this.hasStarted()) {
              this._started = true;
              this._onStartFns.forEach(fn => fn());
              this._onStartFns = [];
          }
      }
      onDone(fn) {
          this._onDoneFns.push(fn);
      }
      onDestroy(fn) {
          this._onDestroyFns.push(fn);
      }
      hasStarted() {
          return this._started;
      }
      play() {
          if (!this.parentPlayer) {
              this.init();
          }
          this._onStart();
          this.players.forEach(player => player.play());
      }
      pause() {
          this.players.forEach(player => player.pause());
      }
      restart() {
          this.players.forEach(player => player.restart());
      }
      finish() {
          this._onFinish();
          this.players.forEach(player => player.finish());
      }
      destroy() {
          this._onDestroy();
      }
      _onDestroy() {
          if (!this._destroyed) {
              this._destroyed = true;
              this._onFinish();
              this.players.forEach(player => player.destroy());
              this._onDestroyFns.forEach(fn => fn());
              this._onDestroyFns = [];
          }
      }
      reset() {
          this.players.forEach(player => player.reset());
          this._destroyed = false;
          this._finished = false;
          this._started = false;
      }
      setPosition(p) {
          const timeAtPosition = p * this.totalTime;
          this.players.forEach(player => {
              const position = player.totalTime ? Math.min(1, timeAtPosition / player.totalTime) : 1;
              player.setPosition(position);
          });
      }
      getPosition() {
          const longestPlayer = this.players.reduce((longestSoFar, player) => {
              const newPlayerIsLongest = longestSoFar === null || player.totalTime > longestSoFar.totalTime;
              return newPlayerIsLongest ? player : longestSoFar;
          }, null);
          return longestPlayer != null ? longestPlayer.getPosition() : 0;
      }
      beforeDestroy() {
          this.players.forEach(player => {
              if (player.beforeDestroy) {
                  player.beforeDestroy();
              }
          });
      }
      /** @internal */
      triggerCallback(phaseName) {
          const methods = phaseName == 'start' ? this._onStartFns : this._onDoneFns;
          methods.forEach(fn => fn());
          methods.length = 0;
      }
  }
  
  /**
   * @license
   * Copyright Google LLC All Rights Reserved.
   *
   * Use of this source code is governed by an MIT-style license that can be
   * found in the LICENSE file at https://angular.io/license
   */
  const ɵPRE_STYLE = '!';
  
  /**
   * @license
   * Copyright Google LLC All Rights Reserved.
   *
   * Use of this source code is governed by an MIT-style license that can be
   * found in the LICENSE file at https://angular.io/license
   */
  
  /**
   * @license
   * Copyright Google LLC All Rights Reserved.
   *
   * Use of this source code is governed by an MIT-style license that can be
   * found in the LICENSE file at https://angular.io/license
   */
  
  /**
   * @license
   * Copyright Google LLC All Rights Reserved.
   *
   * Use of this source code is governed by an MIT-style license that can be
   * found in the LICENSE file at https://angular.io/license
   */
  
  /**
   * Generated bundle index. Do not edit.
   */
  
  export { AUTO_STYLE, AnimationBuilder, AnimationFactory, NoopAnimationPlayer, animate, animateChild, animation, group, keyframes, query, sequence, stagger, state, style, transition, trigger, useAnimation, AnimationGroupPlayer as ɵAnimationGroupPlayer, ɵPRE_STYLE };
  //# sourceMappingURL=animations.js.map
  