Acme.BookStore.HttpApi.Host/node_modules/luxon/src/impl/util.js

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/*
  This is just a junk drawer, containing anything used across multiple classes.
  Because Luxon is small(ish), this should stay small and we won't worry about splitting
  it up into, say, parsingUtil.js and basicUtil.js and so on. But they are divided up by feature area.
*/

import { InvalidArgumentError } from "../errors.js";

/**
 * @private
 */

// TYPES

export function isUndefined(o) {
  return typeof o === "undefined";
}

export function isNumber(o) {
  return typeof o === "number";
}

export function isInteger(o) {
  return typeof o === "number" && o % 1 === 0;
}

export function isString(o) {
  return typeof o === "string";
}

export function isDate(o) {
  return Object.prototype.toString.call(o) === "[object Date]";
}

// CAPABILITIES

export function hasIntl() {
  try {
    return typeof Intl !== "undefined" && Intl.DateTimeFormat;
  } catch (e) {
    return false;
  }
}

export function hasFormatToParts() {
  return !isUndefined(Intl.DateTimeFormat.prototype.formatToParts);
}

export function hasRelative() {
  try {
    return typeof Intl !== "undefined" && !!Intl.RelativeTimeFormat;
  } catch (e) {
    return false;
  }
}

// OBJECTS AND ARRAYS

export function maybeArray(thing) {
  return Array.isArray(thing) ? thing : [thing];