fix: plurals arg type

ts/types/Localizer.ts

@@ -23,9 +23,9 @@ export type DictionaryWithoutPluralStrings = Omit<Dictionary, PluralString>;
 type DynamicArgs<LocalizedString extends string> =
   /** If a string follows the plural format use its plural variable name and recursively check for
    *  dynamic args inside all plural forms */
-  LocalizedString extends `{${infer PluralVar}, plural, one {${infer PluralOne}} other {${infer PluralOther}}}`
+  LocalizedString extends `{${infer PluralVar}, plural, one [${infer PluralOne}] other [${infer PluralOther}]}`
     ? PluralVar | DynamicArgs<PluralOne> | DynamicArgs<PluralOther>
-    : /** If a string segment has follows the variable form parse its variable name and recursively
+    : /** If a string segment follows the variable form parse its variable name and recursively
        * check for more dynamic args */
       // eslint-disable-next-line @typescript-eslint/no-unused-vars -- We dont care about _Pre TODO: see if we can remove this infer
       LocalizedString extends `${infer _Pre}{${infer Var}}${infer Rest}`

ts/util/i18n.ts

@@ -219,7 +219,7 @@ export const setupi18n = (locale: Locale, dictionary: LocalizerDictionary) => {
             `i18n: Attempted to nonexistent pluralKey for plural form string '${localizedString}'`
           );
         } else {
-          const num = args?.[pluralKey] ?? 0;
+          const num = args?.[pluralKey as keyof typeof args] ?? 0;
 
           const cardinalRule = new Intl.PluralRules(locale).select(num);