Allow partial application

README.md

@@ -37,3 +37,15 @@ commentsLabel(1); // komentarz
 commentsLabel(0); // komentarzy
 commentsLabel(3); // komentarze
 ```
+
+### Partial application
+And if you dislike `bind` for some reason - you can do partial application like this:
+
+```javascript
+import { polishPlurals } from 'polish-plurals';
+
+const commentsLabel = polishPlurals(null, 'komentarz', 'komentarze', 'komentarzy');
+commentsLabel(1); // komentarz
+commentsLabel(0); // komentarzy
+commentsLabel(3); // komentarze
+```

index.mjs

@@ -1,5 +1,17 @@
 export function polishPlurals(singularNominativ, pluralNominativ, pluralGenitive, value) {
+  const partial = value => _polishPlurals(singularNominativ, pluralNominativ, pluralGenitive, value);
+
+  if (typeof value !== "undefined") {
+    return partial(value);
+  }
+  else {
+    return partial;
+  }
+}
+
+function _polishPlurals(singularNominativ, pluralNominativ, pluralGenitive, value) {
   value = Math.abs(value);
+
   if (value === 1) {
       return singularNominativ;
   } else if (value % 10 >= 2 && value % 10 <= 4 && (value % 100 < 10 || value % 100 >= 20)) {

test/index.test.js

@@ -56,4 +56,10 @@ describe('polish plurals', () => {
     expect(commentsLabel(-3)).to.eql('komentarze');
     expect(commentsLabel(-5)).to.eql('komentarzy');
   });
+
+  it('should allow partial aplication', () => {
+    const partialCommentsLabel = polishPlurals('komentarz', 'komentarze', 'komentarzy');
+
+    expect(partialCommentsLabel(1)).to.eql(polishPlurals('komentarz', 'komentarze', 'komentarzy', 1));
+  });
 });