Create one collator per run

index.js

@@ -1,10 +1,12 @@
-const sortby = (...properties) => (a, b) => {
+
+const sortby = (...properties) => {
   // 'base' treat accent as there base character
   const collator = new Intl.Collator('en', { numeric: true, sensitivity: 'base' })
 
   // if items is {prop1:value1, prop2:value2}
   // then sort(['prop1', 'desc', 'prop2'])
   // will sort by prop1 desc and prop2
+  return (a, b) => {
     for (let i = 0; i < properties.length; i++) {
       const property = properties[i]
 
@@ -27,6 +29,7 @@ const sortby = (...properties) => (a, b) => {
     }
 
     return 0
+  }
 }
 
 export { sortby }