/**
* @license Copyright (c) 2003-2026, CKSource Holding sp. z o.o. All rights reserved.
* For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-licensing-options
*/
/**
* Safely returns `userAgent` from browser's navigator API in a lower case.
* If navigator API is not available it will return an empty string.
*
* @internal
*/
export declare function getUserAgent(): string;
/**
* A namespace containing environment and browser information.
*/
export interface EnvType {
	/**
	* Indicates that the application is running on Macintosh.
	*/
	readonly isMac: boolean;
	/**
	* Indicates that the application is running on Windows.
	*/
	readonly isWindows: boolean;
	/**
	* Indicates that the application is running in Firefox (Gecko).
	*/
	readonly isGecko: boolean;
	/**
	* Indicates that the application is running in Safari.
	*/
	readonly isSafari: boolean;
	/**
	* Indicates that the application is running in iOS.
	*/
	readonly isiOS: boolean;
	/**
	* Indicates that the application is running on Android mobile device.
	*/
	readonly isAndroid: boolean;
	/**
	* Indicates that the application is running in a browser using the Blink engine.
	*/
	readonly isBlink: boolean;
	/**
	* Indicates that the user agent has enabled a forced colors mode (e.g. Windows High Contrast mode).
	*
	* Note that the value of this property is evaluated each time it is accessed, and it may change over time, if the environment
	* settings have changed.
	*/
	readonly isMediaForcedColors: boolean;
	/**
	* Indicates that "prefer reduced motion" browser setting is active.
	*
	* Note that the value of this property is evaluated each time it is accessed, and it may change over time, if the environment
	* settings have changed.
	*/
	readonly isMotionReduced: boolean;
	/**
	* Environment features information.
	*/
	readonly features: EnvFeaturesType;
}
export interface EnvFeaturesType {
	/**
	* Indicates that the environment supports ES2018 Unicode property escapes — like `\p{P}` or `\p{L}`.
	* More information about unicode properties might be found
	* [in Unicode Standard Annex #44](https://www.unicode.org/reports/tr44/#GC_Values_Table).
	*/
	readonly isRegExpUnicodePropertySupported: boolean;
}
/**
* A namespace containing environment and browser information.
*/
export declare const env: EnvType;
/**
* Checks if User Agent represented by the string is running on Macintosh.
*
* @internal
* @param userAgent **Lowercase** `navigator.userAgent` string.
* @returns Whether User Agent is running on Macintosh or not.
*/
export declare function isMac(userAgent: string): boolean;
/**
* Checks if User Agent represented by the string is running on Windows.
*
* @internal
* @param userAgent **Lowercase** `navigator.userAgent` string.
* @returns Whether User Agent is running on Windows or not.
*/
export declare function isWindows(userAgent: string): boolean;
/**
* Checks if User Agent represented by the string is Firefox (Gecko).
*
* @internal
* @param userAgent **Lowercase** `navigator.userAgent` string.
* @returns Whether User Agent is Firefox or not.
*/
export declare function isGecko(userAgent: string): boolean;
/**
* Checks if User Agent represented by the string is Safari.
*
* @internal
* @param userAgent **Lowercase** `navigator.userAgent` string.
* @returns Whether User Agent is Safari or not.
*/
export declare function isSafari(userAgent: string): boolean;
/**
* Checks if User Agent represented by the string is running in iOS.
*
* @internal
* @param userAgent **Lowercase** `navigator.userAgent` string.
* @returns Whether User Agent is running in iOS or not.
*/
export declare function isiOS(userAgent: string): boolean;
/**
* Checks if User Agent represented by the string is Android mobile device.
*
* @internal
* @param userAgent **Lowercase** `navigator.userAgent` string.
* @returns Whether User Agent is Safari or not.
*/
export declare function isAndroid(userAgent: string): boolean;
/**
* Checks if User Agent represented by the string is Blink engine.
*
* @internal
* @param userAgent **Lowercase** `navigator.userAgent` string.
* @returns Whether User Agent is Blink engine or not.
*/
export declare function isBlink(userAgent: string): boolean;
/**
* Checks if the current environment supports ES2018 Unicode properties like `\p{P}` or `\p{L}`.
* More information about unicode properties might be found
* [in Unicode Standard Annex #44](https://www.unicode.org/reports/tr44/#GC_Values_Table).
*
* @internal
*/
export declare function isRegExpUnicodePropertySupported(): boolean;
/**
* Checks if the user agent has enabled a forced colors mode (e.g. Windows High Contrast mode).
*
* Returns `false` in environments where `window` global object is not available.
*
* @internal
*/
export declare function isMediaForcedColors(): boolean;
/**
* Checks if the user enabled "prefers reduced motion" setting in browser.
*
* Returns `false` in environments where `window` global object is not available.
*
* @internal
*/
export declare function isMotionReduced(): boolean;