@nativescript/core/utils/index.d.ts

A JavaScript library providing an easy to use api for interacting with iOS and Android platform APIs.

export { clearInterval, clearTimeout, setInterval, setTimeout } from '../timer';
export * from './common';
export * from './constants';
export * from './debug';
export * from './layout-helper';
export * from './macrotask-scheduler';
export * from './mainthread-helper';
export * from './native-helper';
export * from './types';

export const RESOURCE_PREFIX: string;
export const FILE_PREFIX: string;

//@private
/**
 * Used by various android event listener implementations.
 * @private
 */
interface Owned {
	owner: any;
}
//@endprivate

/**
 * An utility function that invokes garbage collection on the JavaScript side.
 */
export function GC();

/**
 * An utility function that queues a garbage collection, multiple calls in quick succession are debounced by default and only one gc will be executed after 900ms.
 * @param delay Customize the delay
 * @param useThrottle Instead of default debounce strategy, use throttling
 */
export function queueGC(delay?: number, useThrottle?: boolean);

/**
 * A simple throttle utility
 * @param fn Function to throttle
 * @param delay Customize the delay (default is 300ms)
 */
export function throttle<T extends Function = any>(fn: T, delay?: number): T;

/**
 * A simple debounce utility
 * @param fn Function to debounce
 * @param delay Customize the delay (default is 300ms)
 */
export function debounce<T extends Function = any>(fn: T, delay?: number, options?: { leading?: boolean }): T;

/**
 * Releases the reference to the wrapped native object
 * @param object The Java/Objective-C object to release.
 */
export function releaseNativeObject(object: any /*java.lang.Object | NSObject*/);

/**
 * Queues the passed function to be ran in a macroTask
 * @param task the function to execute as a macroTask
 */
export function queueMacrotask(task: () => void): void;

/**
 * Checks if the current thread is the main thread. Directly calls the passed function
 * if it is, or dispatches it to the main thread otherwise.
 * @param func The function to execute on the main thread.
 */
export function executeOnMainThread(func: Function);

/**
 * Runs the passed function on the UI Thread.
 * @param func The function to execute on the UI thread.
 */
export function executeOnUIThread(func: Function);

/**
 * Returns a function wrapper which executes the supplied function on the main thread.
 * The wrapper behaves like the original function and passes all of its arguments BUT
 * discards its return value.
 * @param func The function to execute on the main thread
 * @returns The wrapper function which schedules execution to the main thread
 */
export function mainThreadify(func: Function): (...args: any[]) => void;

/**
 * Returns true if the specified URI is a font icon URI like "fontIcon://&#xf1e0".
 * @param uri The URI.
 */
export function isFontIconURI(uri: string): boolean;

/**
 * Returns true if the specified path points to a resource or local file.
 * @param path The path.
 */
export function isFileOrResourcePath(path: string): boolean;

/**
 * Get file extension from file path
 * @param path file path
 * @returns file extension
 */
export function getFileExtension(path: string): string;

/**
 * Returns true if the specified URI is data URI (http://en.wikipedia.org/wiki/Data_URI_scheme).
 * @param uri The URI.
 */
export function isDataURI(uri: string): boolean;

/**
 * Opens url.
 * @param url The url.
 */
export function openUrl(url: string): boolean;

/**
 * Opens file.
 * @param filePath The file.
 * @param title Optional title for Android. Default is: 'Open File...'
 */
export function openFile(filePath: string, title?: string): boolean;

/**
 * Escapes special regex symbols (., *, ^, $ and so on) in string in order to create a valid regex from it.
 * @param source The original value.
 */
export function escapeRegexSymbols(source: string): string;

/**
 * Converts string value to number or boolean.
 * @param value The original value.
 */
export function convertString(value: any): any;

/**
 * Gets module name from path.
 * @param path The module path.
 */
export function getModuleName(path: string): string;

/**
 * Sorts an array by using merge sort algorithm (which ensures stable sort since the built-in Array.sort() does not promise a stable sort).
 * @param arr - array to be sorted
 * @param compareFunc - function that will be used to compare two elements of the array
 */
export function mergeSort(arr: Array<any>, compareFunc: (a: any, b: any) => number): Array<any>;

/**
 * Checks if array has any duplicate elements.
 * @param arr - The array to be checked.
 */
export function hasDuplicates(arr: Array<any>): boolean;

/**
 * Removes duplicate elements from array.
 * @param arr - The array.
 */
export function eliminateDuplicates(arr: Array<any>): Array<any>;

/**
 * Checks whether the application is running on real device and not on simulator/emulator.
 */
export function isRealDevice(): boolean;

/**
 * Hides the soft input method, usually a soft keyboard.
 */
export function dismissSoftInput(nativeView?: any): void;

/**
 * Dismiss any keyboard visible on the screen.
 */
export function dismissKeyboard(): void;

/**
 * Copy value to device clipboard.
 */
export function copyToClipboard(value: string): void;