Upgrade Ava to v4

node_modules/plur/index.d.ts

@@ -1,23 +1,26 @@
 /**
 Pluralize a word.
 
-@param word - Word to pluralize.
-@param plural - Pluralized word.
+@param word - The word to pluralize.
+@param plural - Explicitly provide the pluralized word.
 The plural suffix will match the case of the last letter in the word.
 This option is only for extreme edge-cases. You probably won't need it.
 
 Default:
 
-- Irregular nouns will use this [list](https://github.com/sindresorhus/irregular-plurals/blob/master/irregular-plurals.json).
+- Irregular nouns will use this [list](https://github.com/sindresorhus/irregular-plurals/blob/main/irregular-plurals.json).
 - Words ending in *s*, *x*, *z*, *ch*, *sh* will be pluralized with *-es* (eg. *foxes*).
 - Words ending in *y* that are preceded by a consonant will be pluralized by replacing *y* with *-ies* (eg. *puppies*).
 - All other words will have "s" added to the end (eg. *days*).
 
-@param count - Count to determine whether to use singular or plural.
+@param count - The count to determine whether to use singular or plural.
 
 @example
 ```
-import plur = require('plur');
+import plur from 'plur';
+
+plur('rainbow');
+//=> 'rainbows'
 
 plur('unicorn', 4);
 //=> 'unicorns'
@@ -32,7 +35,5 @@ plur('cactus', 2);
 //=> 'cacti'
 ```
 */
-declare function plur(word: string, count: number): string;
-declare function plur(word: string, plural: string, count: number): string;
-
-export = plur;
+export default function plur(word: string, count?: number): string;
+export default function plur(word: string, plural: string, count: number): string;