@gechiui/components/build-module/utils/values.js

UI components for GeChiUI.

/* eslint-disable jsdoc/valid-types */

/**
 * Determines if a value is null or undefined.
 *
 * @template T
 *
 * @param {T | null | undefined} value The value to check.
 * @return {value is T} Whether value is not null or undefined.
 */
export function isValueDefined(value) {
  return value !== undefined && value !== null;
}
/* eslint-enable jsdoc/valid-types */

/* eslint-disable jsdoc/valid-types */

/**
 * Determines if a value is empty, null, or undefined.
 *
 * @template T
 *
 * @param {T | "" | null | undefined} value The value to check.
 * @return {value is T} Whether value is empty.
 */

export function isValueEmpty(value) {
  const isEmptyString = value === '';
  return !isValueDefined(value) || isEmptyString;
}
/* eslint-enable jsdoc/valid-types */

/**
 * Get the first defined/non-null value from an array.
 *
 * @template T
 *
 * @param {Array<T | null | undefined>} values        Values to derive from.
 * @param {T}                           fallbackValue Fallback value if there are no defined values.
 * @return {T} A defined value or the fallback value.
 */

export function getDefinedValue() {
  var _values$find;

  let values = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : [];
  let fallbackValue = arguments.length > 1 ? arguments[1] : undefined;
  return (_values$find = values.find(isValueDefined)) !== null && _values$find !== void 0 ? _values$find : fallbackValue;
}
/**
 * @param {string} [locale]
 * @return {[RegExp, RegExp]} The delimiter and decimal regexp
 */

const getDelimiterAndDecimalRegex = locale => {
  const formatted = Intl.NumberFormat(locale).format(1000.1);
  const delimiter = formatted[1];
  const decimal = formatted[formatted.length - 2];
  return [new RegExp(`\\${delimiter}`, 'g'), new RegExp(`\\${decimal}`, 'g')];
}; // https://en.wikipedia.org/wiki/Decimal_separator#Current_standards


const INTERNATIONAL_THOUSANDS_DELIMITER = / /g;
const ARABIC_NUMERAL_LOCALES = ['ar', 'fa', 'ur', 'ckb', 'ps'];
const EASTERN_ARABIC_NUMBERS = /([۰-۹]|[٠-٩])/g;
/**
 * Checks to see if a value is a numeric value (`number` or `string`).
 *
 * Intentionally ignores whether the thousands delimiters are only
 * in the thousands marks.
 *
 * @param {any}    value
 * @param {string} [locale]
 * @return {boolean} Whether value is numeric.
 */

export function isValueNumeric(value) {
  let locale = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : window.navigator.language;

  if (ARABIC_NUMERAL_LOCALES.some(l => locale.startsWith(l))) {
    locale = 'en-GB';

    if (EASTERN_ARABIC_NUMBERS.test(value)) {
      value = value.replace(/[٠-٩]/g, (
      /** @type {string} */
      d) => '٠١٢٣٤٥٦٧٨٩'.indexOf(d)).replace(/[۰-۹]/g, (
      /** @type {string} */
      d) => '۰۱۲۳۴۵۶۷۸۹'.indexOf(d)).replace(/٬/g, ',').replace(/٫/g, '.');
    }
  }

  const [delimiterRegexp, decimalRegexp] = getDelimiterAndDecimalRegex(locale);
  const valueToCheck = typeof value === 'string' ? value.replace(delimiterRegexp, '').replace(decimalRegexp, '.').replace(INTERNATIONAL_THOUSANDS_DELIMITER, '') : value;
  return !isNaN(parseFloat(valueToCheck)) && isFinite(valueToCheck);
}
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