Adds diffUsing method

ecrmnn · Mar 29, 2023 · 3667c8b · 3667c8b
1 parent 2b3dd64
commit 3667c8b
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Showing 5 changed files with 25 additions and 3 deletions.
diff --git a/README.md b/README.md
@@ -578,6 +578,7 @@ diff.all();
 // [{ name: 'Alice', age: 25 }]
 ```
 
+
 #### `doesntContain()`
 
 The `doesntContain` method determines whether the collection does not contain a given item. You may pass a closure to the `doesntContain` method to determine if an element does not exist in the collection matching a given truth test:
@@ -3355,4 +3356,4 @@ PRs are welcomed to this project, and help is needed in order to keep up with th
 
 ### License
 
-MIT © [Daniel Eckermann](https://danieleckermann.com)
+MIT © [Daniel Eckermann](https://danieleckermann.com)
diff --git a/build/collect.js b/build/collect.js
diff --git a/build/collect.min.js b/build/collect.min.js
diff --git a/dist/index.js b/dist/index.js
@@ -48,6 +48,7 @@ Collection.prototype.dd = require('./methods/dd');
 Collection.prototype.diff = require('./methods/diff');
 Collection.prototype.diffAssoc = require('./methods/diffAssoc');
 Collection.prototype.diffKeys = require('./methods/diffKeys');
+Collection.prototype.diffUsing = require('./methods/diffUsing');
 Collection.prototype.doesntContain = require('./methods/doesntContain');
 Collection.prototype.dump = require('./methods/dump');
 Collection.prototype.duplicates = require('./methods/duplicates');

diff --git a/test/methods/diffUsing_test.js b/test/methods/diffUsing_test.js
@@ -11,6 +11,14 @@ module.exports = (it, expect, collect) => {
     expect(collection.all()).to.eql(['fr', 'en_gb', 'hr']);
   });
 
+  it('should compare with null', () => {
+    const collection = collect(['fr', 'en_gb', 'hr']);
+
+    const diff = collection.diffUsing(null, (a, b) => a.localeCompare(b));
+
+    expect(diff.all()).to.eql(collection.all());
+  });
+
   it('should compare the collection against another collection using on a callback', () => {
     const collection = collect([
       { name: 'Alice', age: 25 },