/**
 * @license
 * Copyright Google Inc. 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
 */
import { ChangeDetectionStrategy } from '../change_detection/constants';
import { Provider } from '../di';
import { compileComponent as render3CompileComponent, compileDirective as render3CompileDirective } from '../render3/jit/directive';
import { compilePipe as render3CompilePipe } from '../render3/jit/pipe';
import { Type } from '../type';
import { TypeDecorator } from '../util/decorators';
import { ViewEncapsulation } from './view';
/**
 * Type of the Directive decorator / constructor function.
 * @publicApi
 */
export interface DirectiveDecorator {
    /**
     * Marks a class as an Angular directive. You can define your own
     * directives to attach custom behavior to elements in the DOM.
     * The options provide configuration metadata that determines
     * how the directive should be processed, instantiated and used at
     * runtime.
     *
     * Directive classes, like component classes, can implement
     * [life-cycle hooks](guide/lifecycle-hooks) to influence their configuration and behavior.
     *
     *
     * @usageNotes
     * To define a directive, mark the class with the decorator and provide metadata.
     *
     * ```
     * import {Directive} from '@angular/core';
     *
     * @Directive({
     *   selector: 'my-directive',
     * })
     * export class MyDirective {
     * ...
     * }
     * ```
     *
     * ### Declaring directives
     *
     * Directives are [declarables](guide/glossary#declarable).
     * They must be declared by an NgModule
     * in order to be usable in an app.
     *
     * A directive must belong to exactly one NgModule. Do not re-declare
     * a directive imported from another module.
     * List the directive class in the `declarations` field of an NgModule.
     *
     * ```
     * declarations: [
     *  AppComponent,
     *  MyDirective
     * ],
     * ```
     *
     * @Annotation
     */
    (obj: Directive): TypeDecorator;
    /**
     * See the `Directive` decorator.
     */
    new (obj: Directive): Directive;
}
export interface Directive {
    /**
     * The CSS selector that triggers the instantiation of a directive.
     *
     * Declare as one of the following:
     *
     * - `element-name`: select by element name.
     * - `.class`: select by class name.
     * - `[attribute]`: select by attribute name.
     * - `[attribute=value]`: select by attribute name and value.
     * - `:not(sub_selector)`: select only if the element does not match the `sub_selector`.
     * - `selector1, selector2`: select if either `selector1` or `selector2` matches.
     *
     * Angular only allows directives to trigger on CSS selectors that do not cross element
     * boundaries. For example, consider a directive with an `input[type=text]` selector.
     * For the following HTML, the directive is instantiated only on the
     * `<input type="text">` element.
     *
     * ```html
     * <form>
     *   <input type="text">
     *   <input type="radio">
     * <form>
     * ```
     *
     */
    selector?: string;
    /**
     * Enumerates the set of data-bound input properties for a directive
     *
     * Angular automatically updates input properties during change detection.
     * The `inputs` property defines a set of `directiveProperty` to `bindingProperty`
     * configuration:
     *
     * - `directiveProperty` specifies the component property where the value is written.
     * - `bindingProperty` specifies the DOM property where the value is read from.
     *
     * When `bindingProperty` is not provided, it is assumed to be equal to `directiveProperty`.
     * @usageNotes
     *
     * ### Example
     *
     * The following example creates a component with two data-bound properties.
     *
     * ```typescript
     * @Component({
     *   selector: 'bank-account',
     *   inputs: ['bankName', 'id: account-id'],
     *   template: `
     *     Bank Name: {{bankName}}
     *     Account Id: {{id}}
     *   `
     * })
     * class BankAccount {
     *   bankName: string;
     *   id: string;
     *
     * ```
     *
     */
    inputs?: string[];
    /**
     * Enumerates the set of event-bound output properties.
     *
     * When an output property emits an event, an event handler attached to that event
     * in the template is invoked.
     *
     * The `outputs` property defines a set of `directiveProperty` to `bindingProperty`
     * configuration:
     *
     * - `directiveProperty` specifies the component property that emits events.
     * - `bindingProperty` specifies the DOM property the event handler is attached to.
     *
     * @usageNotes
     *
     * ### Example
     *
     * ```typescript
     * @Directive({
     *   selector: 'child-dir',
     *   exportAs: 'child'
     * })
     * class ChildDir {
     * }
     *
     * @Component({
     *   selector: 'main',
     *   template: `<child-dir #c="child"></child-dir>`
     * })
     * class MainComponent {
     * }
     * ```
     *
     */
    outputs?: string[];
    /**
     * A set of injection tokens that allow the DI system to
     * provide a dependency to this directive or component.
     */
    providers?: Provider[];
    /**
     * Defines the name that can be used in the template to assign this directive to a variable.
     *
     * @usageNotes
     *
     * ### Simple Example
     *
     * ```
     * @Directive({
     *   selector: 'child-dir',
     *   exportAs: 'child'
     * })
     * class ChildDir {
     * }
     *
     * @Component({
     *   selector: 'main',
     *   template: `<child-dir #c="child"></child-dir>`
     * })
     * class MainComponent {
     * }
     * ```
     *
     */
    exportAs?: string;
    /**
     * Configures the queries that will be injected into the directive.
     *
     * Content queries are set before the `ngAfterContentInit` callback is called.
     * View queries are set before the `ngAfterViewInit` callback is called.
     *
     * @usageNotes
     *
     * ### Example
     *
     * The following example shows how queries are defined
     * and when their results are available in lifecycle hooks:
     *
     * ```
     * @Component({
     *   selector: 'someDir',
     *   queries: {
     *     contentChildren: new ContentChildren(ChildDirective),
     *     viewChildren: new ViewChildren(ChildDirective)
     *   },
     *   template: '<child-directive></child-directive>'
     * })
     * class SomeDir {
     *   contentChildren: QueryList<ChildDirective>,
     *   viewChildren: QueryList<ChildDirective>
     *
     *   ngAfterContentInit() {
     *     // contentChildren is set
     *   }
     *
     *   ngAfterViewInit() {
     *     // viewChildren is set
     *   }
     * }
     * ```
     *
     * @Annotation
     */
    queries?: {
        [key: string]: any;
    };
    /**
     * If true, this directive/component will be skipped by the AOT compiler and so will always be
     * compiled using JIT.
     *
     * This exists to support future Ivy work and has no effect currently.
     */
    jit?: true;
}
/**
 * Directive decorator and metadata.
 *
 * @Annotation
 */
export interface Directive {
    /**
     * The CSS selector that identifies this directive in a template
     * and triggers instantiation of the directive.
     *
     * Declare as one of the following:
     *
     * - `element-name`: Select by element name.
     * - `.class`: Select by class name.
     * - `[attribute]`: Select by attribute name.
     * - `[attribute=value]`: Select by attribute name and value.
     * - `:not(sub_selector)`: Select only if the element does not match the `sub_selector`.
     * - `selector1, selector2`: Select if either `selector1` or `selector2` matches.
     *
     * Angular only allows directives to apply on CSS selectors that do not cross
     * element boundaries.
     *
     * For the following template HTML, a directive with an `input[type=text]` selector,
     * would be instantiated only on the `<input type="text">` element.
     *
     * ```html
     * <form>
     *   <input type="text">
     *   <input type="radio">
     * <form>
     * ```
     *
     */
    selector?: string;
    /**
     * The set of event-bound output properties.
     * When an output property emits an event, an event handler attached
     * to that event in the template is invoked.
     *
     * Each output property maps a `directiveProperty` to a `bindingProperty`:
     * - `directiveProperty` specifies the component property that emits events.
     * - `bindingProperty` specifies the HTML attribute the event handler is attached to.
     *
     */
    outputs?: string[];
    /**
     * Maps class properties to host element bindings for properties,
     * attributes, and events, using a set of key-value pairs.
     *
     * Angular automatically checks host property bindings during change detection.
     * If a binding changes, Angular updates the directive's host element.
     *
     * When the key is a property of the host element, the property value is
     * the propagated to the specified DOM property.
     *
     * When the key is a static attribute in the DOM, the attribute value
     * is propagated to the specified property in the host element.
     *
     * For event handling:
     * - The key is the DOM event that the directive listens to.
     * To listen to global events, add the target to the event name.
     * The target can be `window`, `document` or `body`.
     * - The value is the statement to execute when the event occurs. If the
     * statement evalueates to `false`, then `preventDefault` is applied on the DOM
     * event. A handler method can refer to the `$event` local variable.
     *
     */
    host?: {
        [key: string]: string;
    };
    /**
     * Configures the [injector](guide/glossary#injector) of this
     * directive or component with a [token](guide/glossary#di-token)
     * that maps to a [provider](guide/glossary#provider) of a dependency.
     */
    providers?: Provider[];
    /**
     * The name or names that can be used in the template to assign this directive to a variable.
     * For multiple names, use a comma-separated string.
     *
     */
    exportAs?: string;
    /**
     * Configures the queries that will be injected into the directive.
     *
     * Content queries are set before the `ngAfterContentInit` callback is called.
     * View queries are set before the `ngAfterViewInit` callback is called.
     *
     */
    queries?: {
        [key: string]: any;
    };
}
/**
 * Type of the Directive metadata.
 *
 * @publicApi
 */
export declare const Directive: DirectiveDecorator;
/**
 * Component decorator interface
 *
 * @publicApi
 */
export interface ComponentDecorator {
    /**
     * Decorator that marks a class as an Angular component and provides configuration
     * metadata that determines how the component should be processed,
     * instantiated, and used at runtime.
     *
     * Components are the most basic UI building block of an Angular app.
     * An Angular app contains a tree of Angular components.
     *
     * Angular components are a subset of directives, always associated with a template.
     * Unlike other directives, only one component can be instantiated per an element in a template.
     *
     * A component must belong to an NgModule in order for it to be available
     * to another component or application. To make it a member of an NgModule,
     * list it in the `declarations` field of the `@NgModule` metadata.
     *
     * Note that, in addition to these options for configuring a directive,
     * you can control a component's runtime behavior by implementing
     * life-cycle hooks. For more information, see the
     * [Lifecycle Hooks](guide/lifecycle-hooks) guide.
     *
     * @usageNotes
     *
     * ### Setting component inputs
     *
     * The following example creates a component with two data-bound properties,
     * specified by the `inputs` value.
     *
     * <code-example path="core/ts/metadata/directives.ts" region="component-input">
     * </code-example>
     *
     *
     * ### Setting component outputs
     *
     * The following example shows two event emitters that emit on an interval. One
     * emits an output every second, while the other emits every five seconds.
     *
     * {@example core/ts/metadata/directives.ts region='component-output-interval'}
     *
     * ### Injecting a class with a view provider
     *
     * The following simple example injects a class into a component
     * using the view provider specified in component metadata:
     *
     * ```
     * class Greeter {
     *    greet(name:string) {
     *      return 'Hello ' + name + '!';
     *    }
     * }
     *
     * @Directive({
     *   selector: 'needs-greeter'
     * })
     * class NeedsGreeter {
     *   greeter:Greeter;
     *
     *   constructor(greeter:Greeter) {
     *     this.greeter = greeter;
     *   }
     * }
     *
     * @Component({
     *   selector: 'greet',
     *   viewProviders: [
     *     Greeter
     *   ],
     *   template: `<needs-greeter></needs-greeter>`
     * })
     * class HelloWorld {
     * }
     *
     * ```
     *
     * ### Preserving whitespace
     *
     * Removing whitespace can greatly reduce AOT-generated code size and speed up view creation.
     * As of Angular 6, the default for `preserveWhitespaces` is false (whitespace is removed).
     * To change the default setting for all components in your application, set
     * the `preserveWhitespaces` option of the AOT compiler.
     *
     * By default, the AOT compiler removes whitespace characters as follows:
     * * Trims all whitespaces at the beginning and the end of a template.
     * * Removes whitespace-only text nodes. For example,
     *
     * ```
     * <button>Action 1</button>  <button>Action 2</button>
     * ```
     *
     * becomes:
     *
     * ```
     * <button>Action 1</button><button>Action 2</button>
     * ```
     *
     * * Replaces a series of whitespace characters in text nodes with a single space.
     * For example, `<span>\n some text\n</span>` becomes `<span> some text </span>`.
     * * Does NOT alter text nodes inside HTML tags such as `<pre>` or `<textarea>`,
     * where whitespace characters are significant.
     *
     * Note that these transformations can influence DOM nodes layout, although impact
     * should be minimal.
     *
     * You can override the default behavior to preserve whitespace characters
     * in certain fragments of a template. For example, you can exclude an entire
     * DOM sub-tree by using the `ngPreserveWhitespaces` attribute:
     *
     * ```html
     * <div ngPreserveWhitespaces>
     *     whitespaces are preserved here
     *     <span>    and here </span>
     * </div>
     * ```
     *
     * You can force a single space to be preserved in a text node by using `&ngsp;`,
     * which is replaced with a space character by Angular's template
     * compiler:
     *
     * ```html
     * <a>Spaces</a>&ngsp;<a>between</a>&ngsp;<a>links.</a>
     * <!-->compiled to be equivalent to:</>
     *  <a>Spaces</a> <a>between</a> <a>links.</a>
     * ```
     *
     * Note that sequences of `&ngsp;` are still collapsed to just one space character when
     * the `preserveWhitespaces` option is set to `false`.
     *
     * ```html
     * <a>before</a>&ngsp;&ngsp;&ngsp;<a>after</a>
     * <!-->compiled to be equivalent to:</>
     *  <a>Spaces</a> <a>between</a> <a>links.</a>
     * ```
     *
     * To preserve sequences of whitespace characters, use the
     * `ngPreserveWhitespaces` attribute.
     *
     * @Annotation
     */
    (obj: Component): TypeDecorator;
    /**
     * See the `@Component` decorator.
     */
    new (obj: Component): Component;
}
/**
 * Supplies configuration metadata for an Angular component.
 */
export interface Component extends Directive {
    /**
     * The change-detection strategy to use for this component.
     *
     * When a component is instantiated, Angular creates a change detector,
     * which is responsible for propagating the component's bindings.
     * The strategy is one of:
     * - `ChangeDetectionStrategy#OnPush` sets the strategy to `CheckOnce` (on demand).
     * - `ChangeDetectionStrategy#Default` sets the strategy to `CheckAlways`.
     */
    changeDetection?: ChangeDetectionStrategy;
    /**
     * Defines the set of injectable objects that are visible to its view DOM children.
     * See [example](#injecting-a-class-with-a-view-provider).
     *
     */
    viewProviders?: Provider[];
    /**
     * The module ID of the module that contains the component.
     * The component must be able to resolve relative URLs for templates and styles.
     * SystemJS exposes the `__moduleName` variable within each module.
     * In CommonJS, this can  be set to `module.id`.
     *
     */
    moduleId?: string;
    /**
     * The URL of a template file for an Angular component. If provided,
     * do not supply an inline template using `template`.
     *
     */
    templateUrl?: string;
    /**
     * An inline template for an Angular component. If provided,
     * do not supply a template file using `templateUrl`.
     *
     */
    template?: string;
    /**
     * One or more URLs for files containing CSS stylesheets to use
     * in this component.
     */
    styleUrls?: string[];
    /**
     * One or more inline CSS stylesheets to use
     * in this component.
     */
    styles?: string[];
    /**
     * One or more animation `trigger()` calls, containing
     * `state()` and `transition()` definitions.
     * See the [Animations guide](/guide/animations) and animations API documentation.
     *
     */
    animations?: any[];
    /**
     * An encapsulation policy for the template and CSS styles. One of:
     * - `ViewEncapsulation.Native`: Use shadow roots. This works
     * only if natively available on the platform.
     * - `ViewEncapsulation.Emulated`: Use shimmed CSS that
     * emulates the native behavior.
     * - `ViewEncapsulation.None`: Use global CSS without any
     * encapsulation.
     *
     * If not supplied, the value is taken from `CompilerOptions`. The default compiler option is
     * `ViewEncapsulation.Emulated`.
     *
     * If the policy is set to `ViewEncapsulation.Emulated` and the component has no `styles`
     * or `styleUrls` specified, the policy is automatically switched to `ViewEncapsulation.None`.
     */
    encapsulation?: ViewEncapsulation;
    /**
     * Overrides the default encapsulation start and end delimiters (`{{` and `}}`)
     */
    interpolation?: [string, string];
    /**
     * A set of components that should be compiled along with
     * this component. For each component listed here,
     * Angular creates a {@link ComponentFactory} and stores it in the
     * {@link ComponentFactoryResolver}.
     */
    entryComponents?: Array<Type<any> | any[]>;
    /**
     * True to preserve or false to remove potentially superfluous whitespace characters
     * from the compiled template. Whitespace characters are those matching the `\s`
     * character class in JavaScript regular expressions. Default is false, unless
     * overridden in compiler options.
     */
    preserveWhitespaces?: boolean;
}
/**
 * Component decorator and metadata.
 *
 * @Annotation
 * @publicApi
 */
export declare const Component: ComponentDecorator;
/**
 * Type of the Pipe decorator / constructor function.
 *
 * @publicApi
 */
export interface PipeDecorator {
    /**
     * Declares a reusable pipe function, and supplies configuration metadata.
     *
     */
    (obj: Pipe): TypeDecorator;
    /**
     * See the `Pipe` decorator.
     */
    new (obj: Pipe): Pipe;
}
/**
 * Type of the Pipe metadata.
 */
export interface Pipe {
    /**
     * The pipe name to use in template bindings.
     *
     */
    name: string;
    /**
     * When true, the pipe is pure, meaning that the
     * `transform()` method is invoked only when its input arguments
     * change. Pipes are pure by default.
     *
     * If the pipe has internal state (that is, the result
     * depends on state other than its arguments), set `pure` to false.
     * In this case, the pipe is invoked on each change-detection cycle,
     * even if the arguments have not changed.
     */
    pure?: boolean;
}
/**
 * @Annotation
 * @publicApi
 */
export declare const Pipe: PipeDecorator;
/**
 * @publicApi
 */
export interface InputDecorator {
    /**
     * Decorator that marks a class as pipe and supplies configuration metadata.
     *
     * A pipe class must implement the `PipeTransform` interface.
     * For example, if the name is "myPipe", use a template binding expression
     * such as the following:
     *
     * ```
     * {{ exp | myPipe }}
     * ```
     *
     * The result of the expression is passed to the pipe's `transform()` method.
     *
     * A pipe must belong to an NgModule in order for it to be available
     * to a template. To make it a member of an NgModule,
     * list it in the `declarations` field of the `@NgModule` metadata.
     *
     */
    (bindingPropertyName?: string): any;
    new (bindingPropertyName?: string): any;
}
/**
 * Type of metadata for an `Input` property.
 *
 *
 */
export interface Input {
    /**
     * Decorator that marks a class field as an input property and supplies configuration metadata.
     * Declares a data-bound input property, which Angular automatically updates
     * during change detection.
     *
     * @usageNotes
     *
     * You can supply an optional name to use in templates when the
     * component is instantiated, that maps to the
     * name of the bound property. By default, the original
     * name of the bound property is used for input binding.
     *
     * The following example creates a component with two input properties,
     * one of which is given a special binding name.
     *
     * ```typescript
     * @Component({
     *   selector: 'bank-account',
     *   template: `
     *     Bank Name: {{bankName}}
     *     Account Id: {{id}}
     *   `
     * })
     * class BankAccount {
     *   // This property is bound using its original name.
     *   @Input() bankName: string;
     *   // this property value is bound to a different property name
     *   // when this component is instantiated in a template.
     *   @Input('account-id') id: string;
     *
     *   // this property is not bound, and is not automatically updated by Angular
     *   normalizedBankName: string;
     * }
     *
     * @Component({
     *   selector: 'app',
     *   template: `
     *     <bank-account bankName="RBC" account-id="4747"></bank-account>
     *   `
     * })
     *
     * class App {}
     * ```
     *
     */
    bindingPropertyName?: string;
}
/**
 * @Annotation
 * @publicApi
 */
export declare const Input: InputDecorator;
/**
 * Type of the Output decorator / constructor function.
 *
 * @publicApi
 */
export interface OutputDecorator {
    /**
    * Decorator that marks a class field as an output property and supplies configuration metadata.
    * Declares a data-bound output property, which Angular automatically updates
    * during change detection.
    *
    * @usageNotes
    *
    * You can supply an optional name to use in templates when the
    * component is instantiated, that maps to the
    * name of the bound property. By default, the original
    * name of the bound property is used for output binding.
    *
    * See `@Input` decorator for an example of providing a binding name.
    *
    */
    (bindingPropertyName?: string): any;
    new (bindingPropertyName?: string): any;
}
/**
 * Type of the Output metadata.
 */
export interface Output {
    bindingPropertyName?: string;
}
/**
 * @Annotation
 * @publicApi
 */
export declare const Output: OutputDecorator;
/**
 * Type of the HostBinding decorator / constructor function.
 *
 * @publicApi
 */
export interface HostBindingDecorator {
    /**
     * Decorator that marks a DOM property as a host-binding property and supplies configuration
     * metadata.
     * Angular automatically checks host property bindings during change detection, and
     * if a binding changes it updates the host element of the directive.
     *
     * @usageNotes
     *
     * The following example creates a directive that sets the `valid` and `invalid`
     * properties on the DOM element that has an `ngModel` directive on it.
     *
     * ```typescript
     * @Directive({selector: '[ngModel]'})
     * class NgModelStatus {
     *   constructor(public control: NgModel) {}
     *   @HostBinding('class.valid') get valid() { return this.control.valid; }
     *   @HostBinding('class.invalid') get invalid() { return this.control.invalid; }
     * }
     *
     * @Component({
     *   selector: 'app',
     *   template: `<input [(ngModel)]="prop">`,
     * })
     * class App {
     *   prop;
     * }
     * ```
     *
     */
    (hostPropertyName?: string): any;
    new (hostPropertyName?: string): any;
}
/**
 * Type of the HostBinding metadata.
 *
 */
export interface HostBinding {
    hostPropertyName?: string;
}
/**
 * @Annotation
 * @publicApi
 */
export declare const HostBinding: HostBindingDecorator;
/**
 * Type of the HostListener decorator / constructor function.
 *
 * @publicApi
 */
export interface HostListenerDecorator {
    (eventName: string, args?: string[]): any;
    new (eventName: string, args?: string[]): any;
}
/**
 * Type of the HostListener metadata.
 */
export interface HostListener {
    /**
     * The CSS event to listen for.
     */
    eventName?: string;
    /**
     * A set of arguments to pass to the handler method when the event occurs.
     */
    args?: string[];
}
/**
 * Binds a CSS event to a host listener and supplies configuration metadata.
 * Angular invokes the supplied handler method when the host element emits the specified event,
 * and updates the bound element with the result.
 * If the handler method returns false, applies `preventDefault` on the bound element.
 *
 * @usageNotes
 *
 * The following example declares a directive
 * that attaches a click listener to a button and counts clicks.
 *
 * ```
 * @Directive({selector: 'button[counting]'})
 * class CountClicks {
 *   numberOfClicks = 0;
 *
 *   @HostListener('click', ['$event.target'])
 *   onClick(btn) {
 *     console.log('button', btn, 'number of clicks:', this.numberOfClicks++);
 *  }
 * }
 *
 * @Component({
 *   selector: 'app',
 *   template: '<button counting>Increment</button>',
 * })
 * class App {}
 * ```
 *
 * @Annotation
 * @publicApi
 */
export declare const HostListener: HostListenerDecorator;
export declare const SWITCH_COMPILE_COMPONENT__POST_R3__: typeof render3CompileComponent;
export declare const SWITCH_COMPILE_DIRECTIVE__POST_R3__: typeof render3CompileDirective;
export declare const SWITCH_COMPILE_PIPE__POST_R3__: typeof render3CompilePipe;
