The `objectArrayToMap` function uses the Array.prototype.reduce method to iterate over the input array and group the objects by the specified key. It creates a new Map object and populates it with the ...

array-map-to-object Like map (), but creates object keys and values instead of array. mapToObject creates a new object with the returned keys and values of calling a provided function on every element ...

When faced with the Array.prototype.map() expects a return value from arrow function error, have the filter function set up correctly.