fix(client): bug fix for unable to remove filter when range min is 0

when the range filter min is 0, failed to remove the filter

packages/searchkit-client/src/__tests__/searchkit.test.tsx

@@ -76,6 +76,14 @@ describe('Searchkit Client', () => {
     ])
   })
 
+  it('should toggle range filters', () => {
+    const api = new SearchkitClient()
+    api.addFilter({ identifier: 'type', min: 0, max: 100 })
+    expect(api.getFilters()).toEqual([{ identifier: 'type', min: 0, max: 100 }])
+    api.toggleFilter({ identifier: 'type', min: 0, max: 100 })
+    expect(api.getFilters()).toEqual([])
+  })
+
   it('should remove multiple filters by id', () => {
     const api = new SearchkitClient()
     api.addFilter({ identifier: 'type', value: 'Movies' })

packages/searchkit-client/src/searchkit.tsx

@@ -27,9 +27,17 @@ export interface SearchkitClientConfig {
   searchOnLoad?: boolean
 }
 
+const isDefined = (str) => typeof str !== 'undefined' && str !== null
+
 const filterSelector = (filter: Filter) => (f: Filter) => {
   if (filter.identifier !== f.identifier) return false
-  if (filter.min && filter.max && filter.min === f.min && filter.max === f.max) return true
+  if (
+    isDefined(filter.min) &&
+    isDefined(filter.max) &&
+    filter.min === f.min &&
+    filter.max === f.max
+  )
+    return true
   if (
     filter.dateMin &&
     filter.dateMax &&