diff --git a/packages/localize/src/date/formatDate.js b/packages/localize/src/date/formatDate.js
index ed191435c..ebc922a16 100644
--- a/packages/localize/src/date/formatDate.js
+++ b/packages/localize/src/date/formatDate.js
@@ -5,31 +5,17 @@ import { normalizeIntlDate } from './normalizeIntlDate.js';
  * Formats date based on locale and options
  *
  * @param {Date} date
- * @param {Object} [options] Intl options are available
- * @param {string} [options.locale]
- * @param {string} [options.localeMatcher]
- * @param {string} [options.formatMatcher]
- * @param {boolean}[options.hour12]
- * @param {string} [options.numberingSystem]
- * @param {string} [options.calendar]
- * @param {string} [options.timeZone]
- * @param {string} [options.timeZoneName]
- * @param {string} [options.weekday]
- * @param {string} [options.era]
- * @param {string} [options.year]
- * @param {string} [options.month]
- * @param {string} [options.day]
- * @param {string} [options.hour]
- * @param {string} [options.minute]
- * @param {string} [options.second]
+ * @param {import('@lion/localize/types/LocalizeMixinTypes').FormatDateOptions} [options] Intl options are available
  * @returns {string}
  */
 export function formatDate(date, options) {
   if (!(date instanceof Date)) {
     return '';
   }
-  /** @type {options} */
-  const formatOptions = options || {};
+
+  const formatOptions =
+    options ||
+    /** @type {import('@lion/localize/types/LocalizeMixinTypes').FormatDateOptions} */ ({});
   /**
    * Set smart defaults if:
    * 1) no options object is passed
diff --git a/packages/localize/src/date/getLocale.js b/packages/localize/src/date/getLocale.js
index a8e96b988..88cba75bc 100644
--- a/packages/localize/src/date/getLocale.js
+++ b/packages/localize/src/date/getLocale.js
@@ -3,7 +3,7 @@ import { localize } from '../localize.js';
 /**
  * Gets the locale to use
  *
- * @param {string} locale Locale to override browser locale
+ * @param {string|undefined} locale Locale to override browser locale
  * @returns {string}
  */
 export function getLocale(locale) {
diff --git a/packages/localize/src/number/emptyStringWhenNumberNan.js b/packages/localize/src/number/emptyStringWhenNumberNan.js
index c077e89f4..6a4140f96 100644
--- a/packages/localize/src/number/emptyStringWhenNumberNan.js
+++ b/packages/localize/src/number/emptyStringWhenNumberNan.js
@@ -3,7 +3,7 @@ import { localize } from '../localize.js';
 /**
  * When number is NaN we should return an empty string or returnIfNaN param
  *
- * @param {string} returnIfNaN
+ * @param {string|undefined} returnIfNaN
  * @returns {string}
  */
 export function emptyStringWhenNumberNan(returnIfNaN) {
diff --git a/packages/localize/src/number/forceENAUSymbols.js b/packages/localize/src/number/forceENAUSymbols.js
index 4c9822492..e477783fc 100644
--- a/packages/localize/src/number/forceENAUSymbols.js
+++ b/packages/localize/src/number/forceENAUSymbols.js
@@ -10,14 +10,12 @@ const CURRENCY_CODE_SYMBOL_MAP = {
  *
  * @typedef {import('../../types/LocalizeMixinTypes').FormatNumberPart} FormatNumberPart
  * @param {FormatNumberPart[]} formattedParts
- * @param {Object} [options]
- * @param {string} [options.currency]
- * @param {string} [options.currencyDisplay]
+ * @param {import('../../types/LocalizeMixinTypes').FormatNumberOptions} [options]
  * @returns {FormatNumberPart[]}
  */
 export function forceENAUSymbols(formattedParts, { currency, currencyDisplay } = {}) {
   const result = formattedParts;
-  if (formattedParts.length > 1 && currencyDisplay === 'symbol') {
+  if (formattedParts.length > 1 && currencyDisplay === 'symbol' && currency) {
     if (Object.keys(CURRENCY_CODE_SYMBOL_MAP).includes(currency)) {
       result[0].value = CURRENCY_CODE_SYMBOL_MAP[currency];
     }
diff --git a/packages/localize/src/number/forceSpaceBetweenCurrencyCodeAndNumber.js b/packages/localize/src/number/forceSpaceBetweenCurrencyCodeAndNumber.js
index 0fa2a1271..f43822c2f 100644
--- a/packages/localize/src/number/forceSpaceBetweenCurrencyCodeAndNumber.js
+++ b/packages/localize/src/number/forceSpaceBetweenCurrencyCodeAndNumber.js
@@ -3,9 +3,7 @@
  *
  * @typedef {import('../../types/LocalizeMixinTypes').FormatNumberPart} FormatNumberPart
  * @param {FormatNumberPart[]} formattedParts
- * @param {Object} [options]
- * @param {string} [options.currency]
- * @param {string} [options.currencyDisplay]
+ * @param {import('../../types/LocalizeMixinTypes').FormatNumberOptions} [options]
  * @returns {FormatNumberPart[]}
  */
 export function forceSpaceBetweenCurrencyCodeAndNumber(
diff --git a/packages/localize/src/number/forceTryCurrencyCode.js b/packages/localize/src/number/forceTryCurrencyCode.js
index 54a24875f..67907f1e1 100644
--- a/packages/localize/src/number/forceTryCurrencyCode.js
+++ b/packages/localize/src/number/forceTryCurrencyCode.js
@@ -1,9 +1,7 @@
 /**
  * @typedef {import('../../types/LocalizeMixinTypes').FormatNumberPart} FormatNumberPart
  * @param {FormatNumberPart[]} formattedParts
- * @param {Object} [options]
- * @param {string} [options.currency]
- * @param {string} [options.currencyDisplay]
+ * @param {import('../../types/LocalizeMixinTypes').FormatNumberOptions} [options]
  * @returns {FormatNumberPart[]}
  */
 export function forceTryCurrencyCode(formattedParts, { currency, currencyDisplay } = {}) {
diff --git a/packages/localize/src/number/forceYenSymbol.js b/packages/localize/src/number/forceYenSymbol.js
index eee6d0eef..ccb9dfec1 100644
--- a/packages/localize/src/number/forceYenSymbol.js
+++ b/packages/localize/src/number/forceYenSymbol.js
@@ -1,9 +1,7 @@
 /**
  * @typedef {import('../../types/LocalizeMixinTypes').FormatNumberPart} FormatNumberPart
  * @param {FormatNumberPart[]} formattedParts
- * @param {Object} [options]
- * @param {string} [options.currency]
- * @param {string} [options.currencyDisplay]
+ * @param {import('../../types/LocalizeMixinTypes').FormatNumberOptions} [options]
  * @returns {FormatNumberPart[]}
  */
 export function forceYenSymbol(formattedParts, { currency, currencyDisplay } = {}) {
diff --git a/packages/localize/src/number/formatNumber.js b/packages/localize/src/number/formatNumber.js
index 1da70f2cf..f1bed42f4 100644
--- a/packages/localize/src/number/formatNumber.js
+++ b/packages/localize/src/number/formatNumber.js
@@ -5,25 +5,12 @@ import { formatNumberToParts } from './formatNumberToParts.js';
  * Formats a number based on locale and options. It uses Intl for the formatting.
  *
  * @typedef {import('../../types/LocalizeMixinTypes').FormatNumberPart} FormatNumberPart
+ * @typedef {import('@lion/localize/types/LocalizeMixinTypes').FormatNumberOptions} FormatOptions
  * @param {number} number Number to be formatted
- * @param {Object} [options] Intl options are available extended by roundMode and returnIfNaN
- * @param {string} [options.roundMode]
- * @param {string} [options.returnIfNaN]
- * @param {string} [options.locale]
- * @param {string} [options.localeMatcher]
- * @param {string} [options.numberingSystem]
- * @param {string} [options.style]
- * @param {string} [options.currency]
- * @param {string} [options.currencyDisplay]
- * @param {boolean}[options.useGrouping]
- * @param {number} [options.minimumIntegerDigits]
- * @param {number} [options.minimumFractionDigits]
- * @param {number} [options.maximumFractionDigits]
- * @param {number} [options.minimumSignificantDigits]
- * @param {number} [options.maximumSignificantDigits]
+ * @param {FormatOptions} [options] Intl options are available extended by roundMode and returnIfNaN
  * @returns {string}
  */
-export function formatNumber(number, options = {}) {
+export function formatNumber(number, options = /** @type {FormatOptions} */ ({})) {
   if (number === undefined || number === null) return '';
   const formattedToParts = formatNumberToParts(number, options);
   // If number is not a number
diff --git a/packages/localize/src/number/formatNumberToParts.js b/packages/localize/src/number/formatNumberToParts.js
index 704e110e0..1a5f4c1d3 100644
--- a/packages/localize/src/number/formatNumberToParts.js
+++ b/packages/localize/src/number/formatNumberToParts.js
@@ -11,21 +11,7 @@ import { roundNumber } from './roundNumber.js';
  *
  * @typedef {import('../../types/LocalizeMixinTypes').FormatNumberPart} FormatNumberPart
  * @param {number} number Number to split up
- * @param {Object} [options] Intl options are available extended by roundMode,returnIfNaN
- * @param {string} [options.roundMode]
- * @param {string} [options.returnIfNaN]
- * @param {string} [options.locale]
- * @param {string} [options.localeMatcher]
- * @param {string} [options.numberingSystem]
- * @param {string} [options.style]
- * @param {string} [options.currency]
- * @param {string} [options.currencyDisplay]
- * @param {boolean}[options.useGrouping]
- * @param {number} [options.minimumIntegerDigits]
- * @param {number} [options.minimumFractionDigits]
- * @param {number} [options.maximumFractionDigits]
- * @param {number} [options.minimumSignificantDigits]
- * @param {number} [options.maximumSignificantDigits]
+ * @param {import('../../types/LocalizeMixinTypes').FormatNumberOptions} [options] Intl options are available extended by roundMode,returnIfNaN
  * @returns {string | FormatNumberPart[]} Array with parts or (an empty string or returnIfNaN if not a number)
  */
 export function formatNumberToParts(number, options = {}) {
diff --git a/packages/localize/src/number/getCurrencyName.js b/packages/localize/src/number/getCurrencyName.js
index 45bc00df0..14fe56e14 100644
--- a/packages/localize/src/number/getCurrencyName.js
+++ b/packages/localize/src/number/getCurrencyName.js
@@ -5,7 +5,7 @@ import { formatNumberToParts } from './formatNumberToParts.js';
  *
  * @typedef {import('../../types/LocalizeMixinTypes').FormatNumberPart} FormatNumberPart
  * @param {string} currencyIso iso code like USD
- * @param {Object} options Intl options are available extended by roundMode
+ * @param {import('../../types/LocalizeMixinTypes').FormatNumberOptions} [options] Intl options are available extended by roundMode
  * @returns {string} currency name like 'US dollar'
  */
 export function getCurrencyName(currencyIso, options) {
diff --git a/packages/localize/src/number/getDecimalSeparator.js b/packages/localize/src/number/getDecimalSeparator.js
index 8cd0a3400..aa593aa04 100644
--- a/packages/localize/src/number/getDecimalSeparator.js
+++ b/packages/localize/src/number/getDecimalSeparator.js
@@ -3,7 +3,7 @@ import { getLocale } from './getLocale.js';
 /**
  * To get the decimal separator
  *
- * @param {string} locale To override the browser locale
+ * @param {string|null} locale To override the browser locale
  * @returns {string} The separator
  */
 export function getDecimalSeparator(locale) {
diff --git a/packages/localize/src/number/getLocale.js b/packages/localize/src/number/getLocale.js
index 0725d2f8d..73f0b1542 100644
--- a/packages/localize/src/number/getLocale.js
+++ b/packages/localize/src/number/getLocale.js
@@ -3,7 +3,7 @@ import { localize } from '../localize.js';
 /**
  * Gets the locale to use
  *
- * @param {string} [locale] Locale to override browser locale
+ * @param {string|null} [locale] Locale to override browser locale
  * @returns {string}
  */
 export function getLocale(locale) {
diff --git a/packages/localize/src/number/normalizeIntl.js b/packages/localize/src/number/normalizeIntl.js
index fb2dbd87c..b66ee582c 100644
--- a/packages/localize/src/number/normalizeIntl.js
+++ b/packages/localize/src/number/normalizeIntl.js
@@ -13,10 +13,7 @@ import { forceENAUSymbols } from './forceENAUSymbols.js';
  *
  * @typedef {import('../../types/LocalizeMixinTypes').FormatNumberPart} FormatNumberPart
  * @param {FormatNumberPart[]} formattedParts
- * @param {Object} options
- * @param {string} [options.style]
- * @param {string} [options.currency]
- * @param {string} [options.currencyDisplay]
+ * @param {import('../../types/LocalizeMixinTypes').FormatNumberOptions} options
  * @param {string} _locale
  * @returns {FormatNumberPart[]}
  */
diff --git a/packages/localize/types/LocalizeMixinTypes.d.ts b/packages/localize/types/LocalizeMixinTypes.d.ts
index a25e65d24..be0af9e3c 100644
--- a/packages/localize/types/LocalizeMixinTypes.d.ts
+++ b/packages/localize/types/LocalizeMixinTypes.d.ts
@@ -5,6 +5,29 @@ export interface FormatNumberPart {
   value: string;
 }
 
+// Take the DateTimeFormat and add the missing resolved options as well as optionals
+export declare interface FormatDateOptions extends Intl.DateTimeFormatOptions {
+  locale?: string;
+  calendar?: string;
+  numberingSystem?: string;
+  timeZone?: string;
+
+  roundMode?: string;
+  returnIfNaN?: string;
+  decimalSeparator?: string;
+  mode?: 'pasted' | 'auto';
+}
+
+// Take the DateTimeFormat and add the missing resolved options as well as optionals, and our own
+export declare interface FormatNumberOptions extends Intl.NumberFormatOptions {
+  locale?: string;
+  numberingSystem?: string;
+  roundMode?: string;
+  returnIfNaN?: string;
+  decimalSeparator?: string;
+  mode?: 'pasted' | 'auto';
+}
+
 interface StringToFunctionMap {
   [key: string]: Function;
 }