'use strict';

var store = require('svelte/store');
var deepmerge = require('deepmerge');
var intlMessageformat = require('intl-messageformat');

function delve(obj, fullKey) {
  if (fullKey == null)
    return void 0;
  if (fullKey in obj) {
    return obj[fullKey];
  }
  const keys = fullKey.split(".");
  let result = obj;
  for (let p = 0; p < keys.length; p++) {
    if (typeof result === "object") {
      if (p > 0) {
        const partialKey = keys.slice(p, keys.length).join(".");
        if (partialKey in result) {
          result = result[partialKey];
          break;
        }
      }
      result = result[keys[p]];
    } else {
      result = void 0;
    }
  }
  return result;
}

const lookupCache = {};
const addToCache = (path, locale, message) => {
  if (!message)
    return message;
  if (!(locale in lookupCache))
    lookupCache[locale] = {};
  if (!(path in lookupCache[locale]))
    lookupCache[locale][path] = message;
  return message;
};
const lookup = (path, refLocale) => {
  if (refLocale == null)
    return void 0;
  if (refLocale in lookupCache && path in lookupCache[refLocale]) {
    return lookupCache[refLocale][path];
  }
  const locales = getPossibleLocales(refLocale);
  for (let i = 0; i < locales.length; i++) {
    const locale = locales[i];
    const message = getMessageFromDictionary(locale, path);
    if (message) {
      return addToCache(path, refLocale, message);
    }
  }
  return void 0;
};

let dictionary;
const $dictionary = store.writable({});
function getLocaleDictionary(locale) {
  return dictionary[locale] || null;
}
function hasLocaleDictionary(locale) {
  return locale in dictionary;
}
function getMessageFromDictionary(locale, id) {
  if (!hasLocaleDictionary(locale)) {
    return null;
  }
  const localeDictionary = getLocaleDictionary(locale);
  const match = delve(localeDictionary, id);
  return match;
}
function getClosestAvailableLocale(refLocale) {
  if (refLocale == null)
    return void 0;
  const relatedLocales = getPossibleLocales(refLocale);
  for (let i = 0; i < relatedLocales.length; i++) {
    const locale = relatedLocales[i];
    if (hasLocaleDictionary(locale)) {
      return locale;
    }
  }
  return void 0;
}
function addMessages(locale, ...partials) {
  delete lookupCache[locale];
  $dictionary.update((d) => {
    d[locale] = deepmerge.all([d[locale] || {}, ...partials]);
    return d;
  });
}
const $locales = store.derived(
  [$dictionary],
  ([dictionary2]) => Object.keys(dictionary2)
);
$dictionary.subscribe((newDictionary) => dictionary = newDictionary);

const queue = {};
function createLocaleQueue(locale) {
  queue[locale] = /* @__PURE__ */ new Set();
}
function removeLoaderFromQueue(locale, loader) {
  queue[locale].delete(loader);
  if (queue[locale].size === 0) {
    delete queue[locale];
  }
}
function getLocaleQueue(locale) {
  return queue[locale];
}
function getLocalesQueues(locale) {
  return getPossibleLocales(locale).map((localeItem) => {
    const localeQueue = getLocaleQueue(localeItem);
    return [localeItem, localeQueue ? [...localeQueue] : []];
  }).filter(([, localeQueue]) => localeQueue.length > 0);
}
function hasLocaleQueue(locale) {
  if (locale == null)
    return false;
  return getPossibleLocales(locale).some(
    (localeQueue) => {
      var _a;
      return (_a = getLocaleQueue(localeQueue)) == null ? void 0 : _a.size;
    }
  );
}
function loadLocaleQueue(locale, localeQueue) {
  const allLoadersPromise = Promise.all(
    localeQueue.map((loader) => {
      removeLoaderFromQueue(locale, loader);
      return loader().then((partial) => partial.default || partial);
    })
  );
  return allLoadersPromise.then((partials) => addMessages(locale, ...partials));
}
const activeFlushes = {};
function flush(locale) {
  if (!hasLocaleQueue(locale)) {
    if (locale in activeFlushes) {
      return activeFlushes[locale];
    }
    return Promise.resolve();
  }
  const queues = getLocalesQueues(locale);
  activeFlushes[locale] = Promise.all(
    queues.map(
      ([localeName, localeQueue]) => loadLocaleQueue(localeName, localeQueue)
    )
  ).then(() => {
    if (hasLocaleQueue(locale)) {
      return flush(locale);
    }
    delete activeFlushes[locale];
  });
  return activeFlushes[locale];
}
function registerLocaleLoader(locale, loader) {
  if (!getLocaleQueue(locale))
    createLocaleQueue(locale);
  const localeQueue = getLocaleQueue(locale);
  if (getLocaleQueue(locale).has(loader))
    return;
  if (!hasLocaleDictionary(locale)) {
    $dictionary.update((d) => {
      d[locale] = {};
      return d;
    });
  }
  localeQueue.add(loader);
}

var __getOwnPropSymbols$2 = Object.getOwnPropertySymbols;
var __hasOwnProp$2 = Object.prototype.hasOwnProperty;
var __propIsEnum$2 = Object.prototype.propertyIsEnumerable;
var __objRest$1 = (source, exclude) => {
  var target = {};
  for (var prop in source)
    if (__hasOwnProp$2.call(source, prop) && exclude.indexOf(prop) < 0)
      target[prop] = source[prop];
  if (source != null && __getOwnPropSymbols$2)
    for (var prop of __getOwnPropSymbols$2(source)) {
      if (exclude.indexOf(prop) < 0 && __propIsEnum$2.call(source, prop))
        target[prop] = source[prop];
    }
  return target;
};
const defaultFormats = {
  number: {
    scientific: { notation: "scientific" },
    engineering: { notation: "engineering" },
    compactLong: { notation: "compact", compactDisplay: "long" },
    compactShort: { notation: "compact", compactDisplay: "short" }
  },
  date: {
    short: { month: "numeric", day: "numeric", year: "2-digit" },
    medium: { month: "short", day: "numeric", year: "numeric" },
    long: { month: "long", day: "numeric", year: "numeric" },
    full: { weekday: "long", month: "long", day: "numeric", year: "numeric" }
  },
  time: {
    short: { hour: "numeric", minute: "numeric" },
    medium: { hour: "numeric", minute: "numeric", second: "numeric" },
    long: {
      hour: "numeric",
      minute: "numeric",
      second: "numeric",
      timeZoneName: "short"
    },
    full: {
      hour: "numeric",
      minute: "numeric",
      second: "numeric",
      timeZoneName: "short"
    }
  }
};
function defaultMissingKeyHandler({ locale, id }) {
  console.warn(
    `[svelte-i18n] The message "${id}" was not found in "${getPossibleLocales(
      locale
    ).join('", "')}".${hasLocaleQueue(getCurrentLocale()) ? `

Note: there are at least one loader still registered to this locale that wasn't executed.` : ""}`
  );
}
const defaultOptions = {
  fallbackLocale: null,
  loadingDelay: 200,
  formats: defaultFormats,
  warnOnMissingMessages: true,
  handleMissingMessage: void 0,
  ignoreTag: true
};
const options = defaultOptions;
function getOptions() {
  return options;
}
function init(opts) {
  const _a = opts, { formats } = _a, rest = __objRest$1(_a, ["formats"]);
  let initialLocale = opts.fallbackLocale;
  if (opts.initialLocale) {
    try {
      if (intlMessageformat.IntlMessageFormat.resolveLocale(opts.initialLocale)) {
        initialLocale = opts.initialLocale;
      }
    } catch (e) {
      console.warn(
        `[svelte-i18n] The initial locale "${opts.initialLocale}" is not a valid locale.`
      );
    }
  }
  if (rest.warnOnMissingMessages) {
    delete rest.warnOnMissingMessages;
    if (rest.handleMissingMessage == null) {
      rest.handleMissingMessage = defaultMissingKeyHandler;
    } else {
      console.warn(
        '[svelte-i18n] The "warnOnMissingMessages" option is deprecated. Please use the "handleMissingMessage" option instead.'
      );
    }
  }
  Object.assign(options, rest, { initialLocale });
  if (formats) {
    if ("number" in formats) {
      Object.assign(options.formats.number, formats.number);
    }
    if ("date" in formats) {
      Object.assign(options.formats.date, formats.date);
    }
    if ("time" in formats) {
      Object.assign(options.formats.time, formats.time);
    }
  }
  return $locale.set(initialLocale);
}

const $isLoading = store.writable(false);

var __defProp$1 = Object.defineProperty;
var __defProps = Object.defineProperties;
var __getOwnPropDescs = Object.getOwnPropertyDescriptors;
var __getOwnPropSymbols$1 = Object.getOwnPropertySymbols;
var __hasOwnProp$1 = Object.prototype.hasOwnProperty;
var __propIsEnum$1 = Object.prototype.propertyIsEnumerable;
var __defNormalProp$1 = (obj, key, value) => key in obj ? __defProp$1(obj, key, { enumerable: true, configurable: true, writable: true, value }) : obj[key] = value;
var __spreadValues$1 = (a, b) => {
  for (var prop in b || (b = {}))
    if (__hasOwnProp$1.call(b, prop))
      __defNormalProp$1(a, prop, b[prop]);
  if (__getOwnPropSymbols$1)
    for (var prop of __getOwnPropSymbols$1(b)) {
      if (__propIsEnum$1.call(b, prop))
        __defNormalProp$1(a, prop, b[prop]);
    }
  return a;
};
var __spreadProps = (a, b) => __defProps(a, __getOwnPropDescs(b));
let current;
const internalLocale = store.writable(null);
function getSubLocales(refLocale) {
  return refLocale.split("-").map((_, i, arr) => arr.slice(0, i + 1).join("-")).reverse();
}
function getPossibleLocales(refLocale, fallbackLocale = getOptions().fallbackLocale) {
  const locales = getSubLocales(refLocale);
  if (fallbackLocale) {
    return [.../* @__PURE__ */ new Set([...locales, ...getSubLocales(fallbackLocale)])];
  }
  return locales;
}
function getCurrentLocale() {
  return current != null ? current : void 0;
}
internalLocale.subscribe((newLocale) => {
  current = newLocale != null ? newLocale : void 0;
  if (typeof window !== "undefined" && newLocale != null) {
    document.documentElement.setAttribute("lang", newLocale);
  }
});
const set = (newLocale) => {
  if (newLocale && getClosestAvailableLocale(newLocale) && hasLocaleQueue(newLocale)) {
    const { loadingDelay } = getOptions();
    let loadingTimer;
    if (typeof window !== "undefined" && getCurrentLocale() != null && loadingDelay) {
      loadingTimer = window.setTimeout(
        () => $isLoading.set(true),
        loadingDelay
      );
    } else {
      $isLoading.set(true);
    }
    return flush(newLocale).then(() => {
      internalLocale.set(newLocale);
    }).finally(() => {
      clearTimeout(loadingTimer);
      $isLoading.set(false);
    });
  }
  return internalLocale.set(newLocale);
};
const $locale = __spreadProps(__spreadValues$1({}, internalLocale), {
  set
});

const getFromQueryString = (queryString, key) => {
  const keyVal = queryString.split("&").find((i) => i.indexOf(`${key}=`) === 0);
  if (keyVal) {
    return keyVal.split("=").pop();
  }
  return null;
};
const getFirstMatch = (base, pattern) => {
  const match = pattern.exec(base);
  if (!match)
    return null;
  return match[1] || null;
};
const getLocaleFromHostname = (hostname) => {
  if (typeof window === "undefined")
    return null;
  return getFirstMatch(window.location.hostname, hostname);
};
const getLocaleFromPathname = (pathname) => {
  if (typeof window === "undefined")
    return null;
  return getFirstMatch(window.location.pathname, pathname);
};
const getLocaleFromNavigator = () => {
  if (typeof window === "undefined")
    return null;
  return window.navigator.language || window.navigator.languages[0];
};
const getLocaleFromQueryString = (search) => {
  if (typeof window === "undefined")
    return null;
  return getFromQueryString(window.location.search.substr(1), search);
};
const getLocaleFromHash = (hash) => {
  if (typeof window === "undefined")
    return null;
  return getFromQueryString(window.location.hash.substr(1), hash);
};

const monadicMemoize = (fn) => {
  const cache = /* @__PURE__ */ Object.create(null);
  const memoizedFn = (arg) => {
    const cacheKey = JSON.stringify(arg);
    if (cacheKey in cache) {
      return cache[cacheKey];
    }
    return cache[cacheKey] = fn(arg);
  };
  return memoizedFn;
};

var __defProp = Object.defineProperty;
var __getOwnPropSymbols = Object.getOwnPropertySymbols;
var __hasOwnProp = Object.prototype.hasOwnProperty;
var __propIsEnum = Object.prototype.propertyIsEnumerable;
var __defNormalProp = (obj, key, value) => key in obj ? __defProp(obj, key, { enumerable: true, configurable: true, writable: true, value }) : obj[key] = value;
var __spreadValues = (a, b) => {
  for (var prop in b || (b = {}))
    if (__hasOwnProp.call(b, prop))
      __defNormalProp(a, prop, b[prop]);
  if (__getOwnPropSymbols)
    for (var prop of __getOwnPropSymbols(b)) {
      if (__propIsEnum.call(b, prop))
        __defNormalProp(a, prop, b[prop]);
    }
  return a;
};
var __objRest = (source, exclude) => {
  var target = {};
  for (var prop in source)
    if (__hasOwnProp.call(source, prop) && exclude.indexOf(prop) < 0)
      target[prop] = source[prop];
  if (source != null && __getOwnPropSymbols)
    for (var prop of __getOwnPropSymbols(source)) {
      if (exclude.indexOf(prop) < 0 && __propIsEnum.call(source, prop))
        target[prop] = source[prop];
    }
  return target;
};
const getIntlFormatterOptions = (type, name) => {
  const { formats } = getOptions();
  if (type in formats && name in formats[type]) {
    return formats[type][name];
  }
  throw new Error(`[svelte-i18n] Unknown "${name}" ${type} format.`);
};
const createNumberFormatter = monadicMemoize(
  (_a) => {
    var _b = _a, { locale, format } = _b, options = __objRest(_b, ["locale", "format"]);
    if (locale == null) {
      throw new Error('[svelte-i18n] A "locale" must be set to format numbers');
    }
    if (format) {
      options = getIntlFormatterOptions("number", format);
    }
    return new Intl.NumberFormat(locale, options);
  }
);
const createDateFormatter = monadicMemoize(
  (_c) => {
    var _d = _c, { locale, format } = _d, options = __objRest(_d, ["locale", "format"]);
    if (locale == null) {
      throw new Error('[svelte-i18n] A "locale" must be set to format dates');
    }
    if (format) {
      options = getIntlFormatterOptions("date", format);
    } else if (Object.keys(options).length === 0) {
      options = getIntlFormatterOptions("date", "short");
    }
    return new Intl.DateTimeFormat(locale, options);
  }
);
const createTimeFormatter = monadicMemoize(
  (_e) => {
    var _f = _e, { locale, format } = _f, options = __objRest(_f, ["locale", "format"]);
    if (locale == null) {
      throw new Error(
        '[svelte-i18n] A "locale" must be set to format time values'
      );
    }
    if (format) {
      options = getIntlFormatterOptions("time", format);
    } else if (Object.keys(options).length === 0) {
      options = getIntlFormatterOptions("time", "short");
    }
    return new Intl.DateTimeFormat(locale, options);
  }
);
const getNumberFormatter = (_g = {}) => {
  var _h = _g, {
    locale = getCurrentLocale()
  } = _h, args = __objRest(_h, [
    "locale"
  ]);
  return createNumberFormatter(__spreadValues({ locale }, args));
};
const getDateFormatter = (_i = {}) => {
  var _j = _i, {
    locale = getCurrentLocale()
  } = _j, args = __objRest(_j, [
    "locale"
  ]);
  return createDateFormatter(__spreadValues({ locale }, args));
};
const getTimeFormatter = (_k = {}) => {
  var _l = _k, {
    locale = getCurrentLocale()
  } = _l, args = __objRest(_l, [
    "locale"
  ]);
  return createTimeFormatter(__spreadValues({ locale }, args));
};
const getMessageFormatter = monadicMemoize(
  // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
  (message, locale = getCurrentLocale()) => new intlMessageformat.IntlMessageFormat(message, locale, getOptions().formats, {
    ignoreTag: getOptions().ignoreTag
  })
);

const formatMessage = (id, options = {}) => {
  var _a, _b, _c, _d;
  let messageObj = options;
  if (typeof id === "object") {
    messageObj = id;
    id = messageObj.id;
  }
  const {
    values,
    locale = getCurrentLocale(),
    default: defaultValue
  } = messageObj;
  if (locale == null) {
    throw new Error(
      "[svelte-i18n] Cannot format a message without first setting the initial locale."
    );
  }
  let message = lookup(id, locale);
  if (!message) {
    message = (_d = (_c = (_b = (_a = getOptions()).handleMissingMessage) == null ? void 0 : _b.call(_a, { locale, id, defaultValue })) != null ? _c : defaultValue) != null ? _d : id;
  } else if (typeof message !== "string") {
    console.warn(
      `[svelte-i18n] Message with id "${id}" must be of type "string", found: "${typeof message}". Gettin its value through the "$format" method is deprecated; use the "json" method instead.`
    );
    return message;
  }
  if (!values) {
    return message;
  }
  let result = message;
  try {
    result = getMessageFormatter(message, locale).format(values);
  } catch (e) {
    if (e instanceof Error) {
      console.warn(
        `[svelte-i18n] Message "${id}" has syntax error:`,
        e.message
      );
    }
  }
  return result;
};
const formatTime = (t, options) => {
  return getTimeFormatter(options).format(t);
};
const formatDate = (d, options) => {
  return getDateFormatter(options).format(d);
};
const formatNumber = (n, options) => {
  return getNumberFormatter(options).format(n);
};
const getJSON = (id, locale = getCurrentLocale()) => {
  return lookup(id, locale);
};
const $format = store.derived([$locale, $dictionary], () => formatMessage);
const $formatTime = store.derived([$locale], () => formatTime);
const $formatDate = store.derived([$locale], () => formatDate);
const $formatNumber = store.derived([$locale], () => formatNumber);
const $getJSON = store.derived([$locale, $dictionary], () => getJSON);

function unwrapFunctionStore(store) {
  let localReference;
  const cancel = store.subscribe((value) => localReference = value);
  const fn = (...args) => localReference(...args);
  fn.freeze = cancel;
  return fn;
}

function defineMessages(i) {
  return i;
}
function waitLocale(locale) {
  return flush(locale || getCurrentLocale() || getOptions().initialLocale);
}

exports._ = $format;
exports.addMessages = addMessages;
exports.date = $formatDate;
exports.defineMessages = defineMessages;
exports.dictionary = $dictionary;
exports.format = $format;
exports.getDateFormatter = getDateFormatter;
exports.getLocaleFromHash = getLocaleFromHash;
exports.getLocaleFromHostname = getLocaleFromHostname;
exports.getLocaleFromNavigator = getLocaleFromNavigator;
exports.getLocaleFromPathname = getLocaleFromPathname;
exports.getLocaleFromQueryString = getLocaleFromQueryString;
exports.getMessageFormatter = getMessageFormatter;
exports.getNumberFormatter = getNumberFormatter;
exports.getTimeFormatter = getTimeFormatter;
exports.init = init;
exports.isLoading = $isLoading;
exports.json = $getJSON;
exports.locale = $locale;
exports.locales = $locales;
exports.number = $formatNumber;
exports.register = registerLocaleLoader;
exports.t = $format;
exports.time = $formatTime;
exports.unwrapFunctionStore = unwrapFunctionStore;
exports.waitLocale = waitLocale;