@nativescript/core/utils/common.js

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

import * as types from './types';
import { dispatchToMainThread, dispatchToUIThread, isMainThread } from './mainthread-helper';
import * as emojiRegexModule from 'emoji-regex';
// Normalize emoji-regex CommonJS / ESM shapes into a callable function.
// Some bundlers expose it as module.exports, others as module.exports.default.
const emojiRegex = (() => {
    const mod = emojiRegexModule;
    if (mod && typeof mod.default === 'function') {
        return mod.default;
    }
    if (typeof mod === 'function') {
        return mod;
    }
    // Fallback: minimal safe regex that never throws.
    return () => /./g;
})();
export * from './mainthread-helper';
export * from './macrotask-scheduler';
export * from './utils-shared';
export const FILE_PREFIX = 'file:///';
export const FONT_PREFIX = 'font://';
export const RESOURCE_PREFIX = 'res://';
export const SYSTEM_PREFIX = 'sys://';
export function escapeRegexSymbols(source) {
    const escapeRegex = /[\-\[\]\/\{\}\(\)\*\+\?\.\\\^\$\|]/g;
    return source.replace(escapeRegex, '\\$&');
}
export function convertString(value) {
    let result;
    if (!types.isString(value) || value.trim() === '') {
        result = value;
    }
    else {
        // Try to convert value to number.
        const valueAsNumber = +value;
        if (!isNaN(valueAsNumber)) {
            result = valueAsNumber;
        }
        else if (value && (value.toLowerCase() === 'true' || value.toLowerCase() === 'false')) {
            result = value.toLowerCase() === 'true' ? true : false;
        }
        else {
            result = value;
        }
    }
    return result;
}
export function getModuleName(path) {
    const moduleName = path.replace('./', '');
    return sanitizeModuleName(moduleName);
}
/**
 * Helps sanitize a module name if it is prefixed with '~/', '~' or '/'
 * @param moduleName the name
 * @param removeExtension whether to remove extension
 */
export function sanitizeModuleName(moduleName, removeExtension = true) {
    moduleName = moduleName.trim();
    if (moduleName.startsWith('~/')) {
        moduleName = moduleName.substring(2);
    }
    else if (moduleName.startsWith('~')) {
        moduleName = moduleName.substring(1);
    }
    else if (moduleName.startsWith('/')) {
        moduleName = moduleName.substring(1);
    }
    if (removeExtension) {
        const extToRemove = ['js', 'mjs', 'ts', 'xml', 'html', 'css', 'scss'];
        const extensionRegEx = new RegExp(`(.*)\\.(?:${extToRemove.join('|')})`, 'i');
        moduleName = moduleName.replace(extensionRegEx, '$1');
    }
    return moduleName;
}
export function isFileOrResourcePath(path) {
    if (!types.isString(path)) {
        return false;
    }
    return (path.indexOf('~/') === 0 || // relative to AppRoot
        path.indexOf('/') === 0 || // absolute path
        path.indexOf(RESOURCE_PREFIX) === 0 ||
        path.indexOf(SYSTEM_PREFIX) === 0); // resource
}
export function isFontIconURI(uri) {
    if (!types.isString(uri)) {
        return false;
    }
    return uri.trim().startsWith(FONT_PREFIX);
}
export function isSystemURI(uri) {
    if (!types.isString(uri)) {
        return false;
    }
    return uri.trim().startsWith(SYSTEM_PREFIX);
}
export function isDataURI(uri) {
    if (!types.isString(uri)) {
        return false;
    }
    const firstSegment = uri.trim().split(',')[0];
    return firstSegment && firstSegment.indexOf('data:') === 0 && firstSegment.indexOf('base64') >= 0;
}
export function mergeSort(arr, compareFunc) {
    if (arr.length < 2) {
        return arr;
    }
    const middle = arr.length / 2;
    const left = arr.slice(0, middle);
    const right = arr.slice(middle, arr.length);
    return merge(mergeSort(left, compareFunc), mergeSort(right, compareFunc), compareFunc);
}
export function merge(left, right, compareFunc) {
    const result = [];
    while (left.length && right.length) {
        if (compareFunc(left[0], right[0]) <= 0) {
            result.push(left.shift());
        }
        else {
            result.push(right.shift());
        }
    }
    while (left.length) {
        result.push(left.shift());
    }
    while (right.length) {
        result.push(right.shift());
    }
    return result;
}
export function hasDuplicates(arr) {
    return arr.length !== eliminateDuplicates(arr).length;
}
export function eliminateDuplicates(arr) {
    return Array.from(new Set(arr));
}
export function executeOnMainThread(func) {
    if (isMainThread()) {
        return func();
    }
    else {
        dispatchToMainThread(func);
    }
}
export function executeOnUIThread(func) {
    dispatchToUIThread(func);
}
export function mainThreadify(func) {
    return function (...args) {
        const argsToPass = args;
        executeOnMainThread(() => func.apply(this, argsToPass));
    };
}
export function isEmoji(value) {
    // TODO: In a future runtime update, we can switch to using Unicode Property Escapes:
    // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions/Unicode_Property_Escapes
    return emojiRegex(value).test(value);
}
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