Add function type for `popperConfig` option (#32882)

* Add function type for `popperConfig` option

* Update .bundlewatch.config.json

* copy edits

Co-authored-by: XhmikosR <[email protected]>
Co-authored-by: Mark Otto <[email protected]>

1 files changed, 22 insertions, 0 deletions

diff --git a/js/tests/unit/dropdown.spec.js b/js/tests/unit/dropdown.spec.js
index 01d599ceb..e97ce7717 100644
--- a/js/tests/unit/dropdown.spec.js
+++ b/js/tests/unit/dropdown.spec.js
@@ -123,6 +123,28 @@ describe('Dropdown', () => {
 
       expect(popperConfig.placement).toEqual('left')
     })
+
+    it('should allow to pass config to Popper with `popperConfig` as a function', () => {
+      fixtureEl.innerHTML = [
+        '<div class="dropdown">',
+        '  <button class="btn dropdown-toggle" data-bs-toggle="dropdown" data-bs-placement="right" >Dropdown</button>',
+        '  <div class="dropdown-menu">',
+        '    <a class="dropdown-item" href="#">Secondary link</a>',
+        '  </div>',
+        '</div>'
+      ].join('')
+
+      const btnDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
+      const getPopperConfig = jasmine.createSpy('getPopperConfig').and.returnValue({ placement: 'left' })
+      const dropdown = new Dropdown(btnDropdown, {
+        popperConfig: getPopperConfig
+      })
+
+      const popperConfig = dropdown._getPopperConfig()
+
+      expect(getPopperConfig).toHaveBeenCalled()
+      expect(popperConfig.placement).toEqual('left')
+    })
   })
 
   describe('toggle', () => {